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Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
Futuri Acceleratori
 per la Fisica delle Particelle

                                     Andrea Ghigo

XCVIII Congresso Nazionale della Società Italiana di Fisica   18/09/12 Napoli   Andrea Ghigo
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
ABSTRACT

I futuri acceleratori per la fisica delle alte energie saranno
realizzati da collaborazioni mondiali. In questa relazione
verranno riportati i progetti di collisori più importanti in
corso e sarà discusso lo stato dell'arte dell'alta energia e
luminosità per gli acceleratori di adroni e leptoni.

    Gran parte del materiale presentato è estratto dalla
   recente presentazione di Caterina Biscari all’ Open
   symposium “European Strategy Preparatory Group”.
   Cracovia 10-12 Settembre 2012 ”

Input also from: Frank Zimmerman, Tatsushi Nakamoto, Steinar Staples,
Lenny Rivkin, Katsuya Yonehara, Wolfram Fischer, Mats Lindroos

                                18/09/2012 Napoli SIF
               A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
In operation
                           Colliders - 2006
In construction

                                                                           VEPP 4M
                    RHIC                           LHC                     VEPP 2000
             CESR-C
       PEP-II                                                                          KEK-B
                 TEVATRON                            DAFNE
                                                                                 Tau-Charm

                                   18/09/2012 Napoli SIF
                  A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
In operation
                           Colliders - 2012
In construction

                                                                           VEPP 4M
                      RHIC                         LHC                     VEPP 2000
                                                                                       SUPER KEK-B
                                                     DAFNE
                                                                                 Tau-Charm

                                   18/09/2012 Napoli SIF
                  A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
6
               10

                    5
               10

                                                                                                                        HE-LHC
               10
                    4                                                                 LHC                 HL-LHC
                                                                                                          LHeC
                                                                                                              CLIC II
Energy (GeV)

                    3
                                                    TEVATRON
               10                                                                                ILC CLIC   DLEP
                                                SPPS      HERA
                                                              LEP II                                  LEP3 SuperTRISTAN
                    2                                                                          eRHIC   SuperTRISTAN
               10                                       LEP             RHIC
                                  ISR               TRISTAN
                                     CESR PETRA                  KEK B     SuperKEKB
                    1         SPEAR DORIS VEPPPEP
                                               IV                  PEP II            SuperB
               10                            VEPP IV
                                    CEA-BP VEPP III                   BEPC
                         PSSR ADONE SPEAR II                               BEPC II    BINP C-T
                                                             SLC CESR-C VEPP 2000
                    0        VEPP-2     DCI
               10                      VEPP-2M                    DAFNE
                               ACO
                          AdA
                            VEP-1
                    -1
               10
                 1960          1970      1980         1990          2000           2010           2020          2030      2040   2050
                                                                           Year

                                                            18/09/2012 Napoli SIF
                                           A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
37
                           10

                           10
                                36                                                                           SuperB
                                                                                                          SuperKEKB
                                35
                           10                                                                                   BINP C-T
                                                                                                                  HL-LHC SuperTRISTAN
Luminosity (cm-2 sec -1)

                                34                                                KEK B                   ILC    LEP3 CLIC II   HE-LHC
                           10                                                      PEP II                     CLIC         DLEP
                                                                                                  LHC                 SuperTRISTAN
                                                                                                                eRHIC
                                33
                           10                         CESR                                                            LHeC
                                                                                 DAFNE
                                                                                 BEPC II
                                                           TEVATRON          CESR-C
                                32                                       RHIC
                           10                                HERA    LEP II
                                                     PEP
                                              DORIS            LEP
                                31                  PETRA TRISTAN                VEPP 2000
                           10                                               BEPC
                                                  VEPP IV
                                          ISR                    SLC
                                30             SPEAR II SPPS
                           10
                                              SPEAR
                                29
                           10
                                                 DCI
                                28
                           10
                                1960   1970       1980            1990           2000          2010           2020           2030   2040   2050
                                                                                        Year

                                                                        18/09/2012 Napoli SIF
                                                       A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
37
                           10

                                36                           SuperB
                           10
                                                             SuperKEKB
                                35
                           10                   BINP C-T                           SuperTRISTAN
                                                                                                                                  HL-LHC
                                                                                  DLEP CLIC
Luminosity (cm-2 sec -1)

                                                             KEK B                                               CLIC II                   HE-LHC
                           10
                                34
                                                                             LEP3        ILC
                                                             PEP II                                                                LHC
                                                                         SuperTRISTAN
                                                                                      eRHIC
                                33
                           10                           CESR                                                        LHeC
                                      DAFNE     BEPC II
                                                 CESR-C                               RHIC                   TEVATRON
                                32
                           10                                                           LEP II
                                                               PEP                         HERA
                                                             DORIS  LEP
                                31         VEPP 2000         PETRA
                           10                    BEPC            TRISTAN
                                                     VEPP IV
                                            SLC                 ISR
                                30             SPEAR II                                           SPPS
                           10
                                                    SPEAR
                                29
                           10
                                          DCI
                                28
                           10
                                      0                  1                        2                     3                     4                     5        6
                                 10                 10                       10                    10                    10                    10       10
                                                                                             Energy (GeV)

                                                                                  18/09/2012 Napoli SIF
                                                                 A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
Energy frontiers

                  18/09/2012 Napoli SIF
 A.Ghigo - Futuri acceleratori per la fisica delle particelle
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
Hadron colliders

           12/09/12 Krakow – ESG
    C.Biscari - "High Energy Accelerators"
Futuri Acceleratori per la Fisica delle Particelle - Andrea Ghigo XCVIII Congresso Nazionale della Società Italiana di Fisica 18/09/12 Napoli ...
CERN Large Hadron Collider

Builded in the old LEP 26 km long tunnel
Collide pp at 14 TeV (mini-SSC)
Higgs, EW symmetry breaking, new physics up to 1 TeV

                                       18/09/2012 Napoli SIF
                      A.Ghigo - Futuri acceleratori per la fisica delle particelle
LHC
Maximum Energy : 7 TeV
Injection Energy : 450 GeV

1’700 circuits, 10’000 magnets
16 rf cavities – 500 MHz

 Design Luminosity                                                                        1034 cm-2·s-1
 No. of bunches per proton beam                                                           2808
 No. of protons per bunch (at start)                                                      1,15·1011
 Circulating current / beam                                                               0,54 A
 Stored beam energy                                                                       360 MJ
 Stored energy in magnets                                                                 11 GJ
 Radiated Power per beam (syncrotron radiation)                                           ~ 6 KW

                                           18/09/2012 Napoli SIF
             21/07/09 Krakow - HEP- Futuri
                         A.Ghigo    2009 acceleratori per la fisica delle particelle
                                                                          C.Biscari - "Accelerators R&D"   11
LHC dipoles
Helium @ 1.9 K
Horizontal force at 8,33 T (inner and outer layer)1,7 MN/m
Composition of the superconducting alloy Ni_Ti (47Wt% Ti)
Maximum current with NO resistence (1,9 K e 8,33 T) 17000 A
Number de strands per cable 36
Number de Ni-Ti filaments in each strand 6500
Bending radius 2803.95 m

                                                Force on the cable: F = B * I0 * L
                                                with
                                                B = 8.33 T
                                                I0 = 12000 Ampere
                                                L = 15 m
 21/07/09 Krakow - HEP 2009
                                           12
                                                F = 165 tons
 C.Biscari - "Accelerators R&D"
Evolution of Integrated Luminosity (August 16)

                                        Lpeak = 8 1033 cm-2 sec-1
                                                   Peak Luminosity
                                                   7e33 cm-2 sec-1

          4th July

                       12/09/12 Krakow – ESG
                C.Biscari - "High Energy Accelerators"
LHC after 4th JULY
                            LS2                                               LS3 : HL-LHC
LS1                         secure L ~         1034 and
INCREASE                                                                      New IR
                            reliability                                       levelled L ~ 5 1034
ENERGY TO                   Aiming at L ~ 2 1034
13-14 TeV                                                                     Experiment upgrades
                            Start LIU

            100-200 ftb-1/year
            Lower emitt

                                                      250-600 ftb-1/year
                                                      + higher intensity
                                                                                        700 ftb-1/year

                                18/09/2012 Napoli SIF
               A.Ghigo - Futuri acceleratori per la fisica delle particelle
HL-LHC High luminosity
            Main objective: 3000 fb-1 in ~ 10 years
                   Peak luminosity of 5×1034 cm-2s-1 with levelling

R&D for next 10 years of LHC
• high beam-beam tune shift values: value of ΔQb-b > 0.03 has been routinely reached
• 25 ns instead of 50 – pile up versus lum
• Emittance preservation
• Electron cloud
• Crab cavities option (KEK-B experience)
• Magnet: debris, wear out 5.5 m
• Cryogenics
• R2E
• Current limits
• LIU
• and new collimation system

High gradient quads
+ 5.5 m short dipole
                                       18/09/2012 Napoli SIF
                      A.Ghigo - Futuri acceleratori per la fisica delle particelle
HE-LHC (High Energy LHC)
Increasing proton energy beyond 7 TeV:
(2010: study group and workshop)

• reuse of the CERN infrastructure
• “ease” in producing luminosity with proton circular collider
• practical and technical experience gained with LHC

 Beam energy set by SC magnets dipole field:
16-20 T == 26 to 33 TeV in the centre of mass.

                                    18/09/2012 Napoli SIF
                   A.Ghigo - Futuri acceleratori per la fisica delle particelle
HE-LHC needs substantial advance in many
other domains:
•   accelerator physics
•   collimation (with increased beam energy and energy density)
•   beam injection – strong Injector upgrade (…SPS 1 TeV)
•   beam dumping
•   handling a synchrotron radiation = 20 LHC > challenge for
    vacuum and cryogenics.
Synchrotron radiation will also constitute a real advantage for HE-LHC design: for the
first time a hadron collider will benefit of a short damping time 1-2 hours instead
of 13-25 h (longitudinal and transverse respectively) of the present LHC.

                                           18/09/2012 Napoli SIF
                          A.Ghigo - Futuri acceleratori per la fisica delle particelle
18/09/2012 Napoli SIF
A.Ghigo - Futuri acceleratori per la fisica delle particelle
RHIC
hadron (p and ion) collider
    @Brookhaven

   creation of a liquid-like
    quark-gluon plasma

  Au-Au Collisions
  at low energies 2.5/4.5 GeV/u:
  4 trillion kelvin: breakdown of "normal matter"                                Polarized p Collisions
                                                                                 at 250 GeV

                                                18/09/2012 Napoli SIF
                               A.Ghigo - Futuri acceleratori per la fisica delle particelle               19
RHIC – a High Luminosity (Polarized) Hadron Collider
  Heavy ions – up to 100 GeV/n                 Polarized protons – up to 255 GeV

Recent upgrades: 3D stochastic cooling,     Recent upgrades: 9 MHz RF, AGS tune
Electron Beam Ion Source                    jumps, polarimeters
Lpeak(avg) = 50(30)x1026cm-2s-1 for Au-Au   Lpeak(avg) = 165(105)x1030cm-2s-1, Pavg= 52%
To date: U-U, Au-Au, Cu-Au, Cu-Cu, d-Au     (at 6 energies, spin physics and comparison data for
(at 14 energies, full E-scan for Au-Au)     A-A)
Further upgrades:                           Further upgrades:
56 MHz SRF, low-energy cooling, p-Au       Pol. source, electron lenses, p-3He
Lepton colliders
Future : e+ e- Linear colliders
      High gradient cavities
e+/e- Linear Colliders
             CLIC and ILC

http://project-clic-cdr.web.cern.ch/project-CLIC-
             CDR/CDR_Volume1.pdf
        http://www.linearcollider.org/cms/
The ILC Global Design Effort*
Americas                     Europe                                             Asia
Labs                         labs                                               labs
                                       Budker
         ANL                                                                              BARC
                                       CEA/Saclay
         BNL                           CERN                                               IHEP
         FNAL                          CIEMAT                                             IUAC
         JLAB                          CNRS                                               KEK
         LANL                          STFC Daresubry Lab.                                RRCAT
         LBNL                          DESY
                                                                                          Tsinghua Univ.
                                       ESRF
         LLNL                                                                             VECC
                                       GSI
         SLAC                          INFN
         TRIUMF                        JINR                                     Universities/Institutes
                                       LAL-Orsay                                          Hiroshima Univ.
Universities/Institutes                PSI                                                KNU
          Colorado Univ.                                                                  Nagoya Univ.
                             Universities/Institutes
          Cornell                       Abertay Univ.        Lancaster Univ.              PAL
          FSU                           Berlin HU            LAPP-Annecy                  TIFR
          Iowa Univ.                    Birmingham Univ.     Legnaro                      Tohoku Univ.
          MSU                           Cambridge Univ.      Liverpool Univ.              Tokyo Univ.
          Notre Dame Univ.              Dundee Univ.         Manchester Univ.
                                                                                          Univ. Delhi
                                        Durham               Mannheim
                                        IFIC                 Oxford Univ.
                                        IPJ                  RHUL

    3 Regions                           IPN-Orsay
                                        IPPP Durham
                                                             Rostock

                                        Krakow
    16 Countries
    76 Institutes
The CLIC/CTF3 collaboration

                                                       24 collaborating institutes
                                                                                                                Oslo University
                                                                             JASRI (Japan)
Ankara University (Turkey)       IRFU/Saclay (France)                                                           PSI (Switzerland),
                                                                             JINR (Russia)
Berlin Tech. Univ. (Germany)     Helsinki Institute of Physics (Finland)                                        Polytech. University of Catalonia (Spain)
                                                                             JLAB (USA)
BINP (Russia)                    IAP (Russia)                                                                   RAL (England)
                                                                             KEK (Japan)
CERN                             IAP NASU (Ukraine)                                                             RRCAT-Indore (India)
                                                                             LAL/Orsay (France)
CIEMAT (Spain)                   Instituto de Fisica Corpuscular                                                Royal Holloway, Univ. London, (UK)
                                                                             LAPP/ESIA (France)
Finnish Industry (Finland)         (Spain)                21/07/09 Krakow LLBL/LBL
                                                                             - HEP 2009                         SLAC (USA)
                                                                                       (USA)
Gazi Universities (Turkey)       INFN / LNF (Italy)                          NCP  (Pakistan)
                                                                                                                Svedberg Laboratory (Sweden)        25
                                                         C.Biscari - "Accelerators   R&D"                       Uppsala University (Sweden)
                                 J.Adams Institute, (UK)                     North-West. Univ. Illinois (USA)
CLIC                         ILC
• Dual beam acceleration    • Well extablished
  technology                  SuperConducting RF
• R&D at CERN ~ 25 y          technology (TESLA,
                              FLASH, XFEL…)
• Normal conducting
                            • Decision in 2004
  cavities
                            • Rf cavities ~ TESLA like
• 12 GHz, 100 MV/m
                            • 1.3 GHz, 31.5 MV/m
• Maximum energy 3 TeV      • Maximum energy 1 TeV
  cm – Phase I at 0.5 TeV     cm - Phase I at 0.5 TeV
• International             • GDE (Global Design
  collaboration around        Effort) - International
  CTF3                        collaboration
                            • Site independent
ILC Gradient: Primary Cost Driver
    Linac and Civil: 75% cost
    • Feasibility DEMONSTRATED (2000 – 2005)
    • European X-FEL in construction @DESY
      using this technology
    • Challenge: deploy and industrialize
      technology in each region
    • Realistic in-kind cost models independently
      developed in each region
    • Prepare for project approval process in each
      region
                    R & D objectives:
                    1) Transfer technology
                    2) Industrialization
Global SCRF Technology

FNAL, ANL   Cornell                DESY
SLAC   
        
            JLAB         LAL
                                  
                                                 KEK, Japan
                                                 
                        Saclay    INFN Milan
                                   

                           N. Walker - ILC08         28
SRF: 1970 - 2011:
• Gradient progress:                                     – High pressure, high purity
   – Standardized recipe                                   rinsing
   – Electron beam welding                               – Solvent / detergent rinse
   – Purification (thermal                               – Diagnostics
     conductivity)                                       – Mechanical grinding
   – Chemical polishing                                    /tumbling: surface repair
   Global Installed Voltage (β=1)           SRF for ILC Main Linac         Value
                                   ILC ??   C.M. Energy                   500 GeV
                                            Beam Rep. rate                  5 Hz
                        EU-XFEL
                SNS, FLASH                  Pulse d uration                 1 ms
                 LEP-II                     beam current                    9 mA
    TRISTAN,
    HERA, CEBAF                             Av. field gradient         31.5 MV/m
                                                                         +/- 20%
  HEPL
                                            # 9-cell cavities             14,560
   from Hasan Padamsee – SRF2011            # cryomodules                  1,680
                                            # RF units (10 MW Kly)           560
The CLIC Layout
                         Drive Beam
                         Generation
                         Complex

Main Beam
Generation
Complex
                             18/09/2012 Napoli SIF
             A.Ghigo - Futuri acceleratori per la fisica delle particelle
CLIC Test Facility (CTF3)

                                                          After delay loop

                                  linac         Delay                   Combiner ring
        150 MeV e-linac                         loop
Thermionic source            3.5 A – 1200 ns

        Photo injector
                          Experimental area           28 A - 140 ns

                           High current, full-loaded linac operation
                           • 95 % RF to beam efficiency measured
                           • No instabilities
CTF3 team
            TBTS: Two Beam Acceleration

                    Maximum gradient   Consistency between
                    145 MV/m           • produced power
                           TD24        • drive beam current
                                       • test beam acceleration
CLIC energy staging
Lower energy machine can run most
of the time during the construction
of the next stage. Physics results will
determine the energies of the stages               Linac 1     I.P.   Linac 2
At each stage the energy can be
tuned to lower values within a factor
three and with limited loss on L        0.5 TeV Stage
performances.                                            Injector Complex
                                                        4 km              4 km
                                                                ~14 km

                                              Linac 1            I.P.               Linac 2

                                       1-2 TeV Stage
                                                         Injector Complex
                                            7.0-14 km                                   7.0-14 km

                                                                 ~20-34 km

                          Linac 1      3 TeV Stage                I.P.                              Linac 2

                                                         Injector Complex

                           20.8 km                       3 km                3 km                    20.8 km

                                                                48.2 km
Layout

14 km, ~100 m deep

31 km, ~100 m deep
LC Main parameters
http://clic-meeting.web.cern.ch/clic-meeting/ComparisonTable.html
 Center-of-mass energy                       ILC         CLIC 500 G      CLIC 3 TeV
                                           500 GeV        Nominal          Nominal

 Total (Peak 1%) luminosity              2.0(1.5)·1034   2.3(1.4)·1034   5.9(2.0)·1034
 Repetition rate (Hz)                         5               50               50
 Loaded accel. gradient MV/m                 33.5             80              100
 Main linac RF frequency GHz               1.3 (SC)           12               12
 Bunch charge109                              20              6.8             3.72
 Bunch separation ns                         176              0.5              0.5
 Beam pulse duration (ns)                    1000            177               156
 Beam power/linac (MWatts)                   10.2             4.9              14
 Hor./vert. norm. emitt (10-6/10-9)         10/40           2.4 / 25         0.66/20
 Hor/Vert FF focusing (mm)                  20/0.4           8/0.1           4 / 0.07
 Hor./vert. IP beam size (nm)               640/5.7        202/ 2.3          40 / 1.0
 BDS length (km)                         2.23 (1 TeV)        1.87             2.75
 Total site length (km)                       31             13.0             48.3
 Wall plug to beam transfer eff.             9.4%            7.5%             6.8%
 Total power consumption MW                  180             220              415
   Energy frontier lepton collider
       Full √s is available to generate
     particle

   Compact
     Low synchrotron radiation
     Multi-pass acceleration
     Multi-pass collisions in ring
     Possible to fit a Multi-TeV CoM machine at Fermilab

   Small energy spread at interaction region
     No beamstrahlung effect
     δE/E ≤ 10-3
                                                      Katsuya Yonehara @ IPAC12
Project X
  Accelerate Hydrogen ions to 8 GeV
  using SRF technology.
  Compressor Ring
  Reduce size of beam (2±1 ns).
 Target
 Collisions lead to muons with energy
 of about 200 MeV.
  Muon Capture and Cooling
  Capture, bunch and cool muons to
  create a tight beam.
  Initial Acceleration
  In a dozen turns, accelerate muons
  to 20 GeV
 Recirculating Linear Accelerator
 In a number of turns, accelerate
 muons up to Multi-TeV using SRF
 techlnology.

 Collider Ring
 Bring positive and negative muons
 into collision at two locations 100
 meters underground.

www.fnal.gov/pub/muon_collider          Katsuya Yonehara @ IPAC12
18/09/2012 Napoli SIF
A.Ghigo - Futuri acceleratori per la fisica delle particelle
Laser driven

                   Plasma                                                             e- driven
                 accelerators:
        Transform transverse fields
          into longitudinal fields
                                                                                       p driven

                                                                                     Dielectric
                                                                                     wakefields
                                                               Demonstrated accelerating Gradients up to 3
                                                               orders of magnitudes beyond presently used
                                                               RF technologies.
                 18/09/2012 Napoli SIF
A.Ghigo - Futuri acceleratori per la fisica delle particelle
Laser driven PLASMA ACCELERATORS
Lasers as tools for fundamental physics
(ELI 1023-25 W/cm2, ELI 4° Pillar, LIL, Russian Mega, Japanese Exawatt, IZEST)

                                                                                       Over few cm

                           Chirped-pulse amplification

  Decrease plasma            Computing tools &
  density and                computing power (PIC
  increase laser             codes) -> prediction of
  power to reduce            bubble regime for mono-
  total power                energetic beams and short
  consumption                laser pulses                                                V. Malka
                                         18/09/2012 Napoli SIF
                        A.Ghigo - Futuri acceleratori per la fisica delle particelle
e- driven PLASMA ACCELERATORS
                                             Tens of GeV                 High brilliance, short
                                                                         pulse e- beams from
                                                                         photon facilities
                                             GeV
                                                                          Eacc ~ Nb / sz2

                                             MeV

Higher acceleration (longer – 50 cm) than l-d
Higher final energy spread
Maximum gain < 2 incoming energy..
Going to ramped bunch train, weak blowout, …

                                   18/09/2012 Napoli SIF
                  A.Ghigo - Futuri acceleratori per la fisica delle particelle
EURONACC: most important Technical Goals
1. External Optical injection
2. External RF injection
3. LWFA with self injection
4. Multi-stage LWFA
5. Synchrotron radiation with advanced beams
6. Electron beam driven PWFA
7. Proton beam driven PWFA                                     Investments :
8. Betatron radiation in plasma                                1 billlion Euro over 10 year horizon
9. Plasma undulator                                            EuroNNAc : 52 institutes
10. Stability and beam quality
11. Polarized beams in plasmas
12. Positron acceleration
13. Femto-second synchronization
14. Power and efficiency

                 18/09/2012 Napoli SIF
A.Ghigo - Futuri acceleratori per la fisica delle particelle
HIGGS Factories
HIGGS FACTORIES e+e-
                                  250 GeV
                        ILC
                                 500 GeV

         Linear                    250 GeV + Klystron based
        Colliders
                       CLIC       500 GeV

                                 > 500 GeV
e+ e-                           LEP3 at LHC tunnel

        Circular       CERN      DLEP – New tunnel, 53 km
        Colliders
                                 TLEP – New tunnel, 80 km

                                250 GeV– 40, 60 km tunnel
                       Super
                                   400
                      TRISTAN
                                   500
HIGGS FACTORIES e+e- rough costs estimations (B$)
                                500 GeV: 7B$ (2007), 31 km
                        ILC
                                    next costing end ‘12
                                240 Klystron based – costing not
 Linear Colliders                            ready
                                  500 GeV : 8B$ (2012), 13 km
                       CLIC
                                      next costing end ’12
                                  > 500
                                      GeV staging up to 3 TeV
                                     Costing to be defined
e+ e-
                                  LEP3: 1.5B$
                       CERN
                                 DLEP, TLEP (40, 80 km), 3-4B$

 Circular Colliders             2.7, 3.5B$ (40, 60 km), 250 GeV
                       Super
                                    4B$ – 60 km 400 GeV
                      TRISTAN

                                   5B$ – 60 km 500GeV
HIGGS FACTORIES: g-g Collider
 E/beam = 80 GeV +
 Compton Scattering LASER
• laser system close to IP for Compton backscattering off the high energy
  electron beams
• electron beam energy lower than for the e+e colliders: 80 GeV, instead of 120
• cross section for Higgs production is high (about 200 fb )
• positrons are not required.
• equivalent e-e- luminosity of few 1034cm-2s-1 yielding several 10000 Higgs
  bosons /year.
• possibility of high polarization in both the primary e− and the colliding γ
  beams
Comparison of possible HIGGS factories
at the lowest energy:
250 GeV for e+e-, 160 GeV for g-g
                Reliable     SITE             Need            First             COST      FUTURE
                Technol      Ready            of             HIGGS              Within    energy
                - TESTS                       R&D            Boson              50% conf. UPGRADE
                                                             (today             level
                                                             T0)
ILC             2012         Japan?           X              2020               5         1 TeV
CLIC -          2014         GREEN            XX             2022               5         3 TeV
klystrons
LEP3            2012          2020 X                        2024               2         250 GeV
SuperTRISTAN    2012         GREEN            X              2022               3         500 GeV
SAPPHIRE        2016          2016 XXX                      2022               ?         160 GeV
New g-g         2016         GREEN            XXX            >2022              ?         160 GeV
Muon collider   2020         GREEN            XXXX            2025             ?         3 TeV
                                            18/09/2012 Napoli SIF
                           A.Ghigo - Futuri acceleratori per la fisica delle particelle
Luminosity frontiers
              Intensity frontiers
                                                                        Power frontiers
                   + Energy frontiers

     N1 N 2
L f
     s xs y
                               Dimension frontiers

                          18/09/2012 Napoli SIF
         A.Ghigo - Futuri acceleratori per la fisica delle particelle
Luminosity Frontiers in Leptons Factories
                          Superfactories
       New colliding schemes for reducing beam-beam effects
      (limiting beam currents and increasing beam dimensions)

• Operating factories                      Crossing scheme
•   BEPC II - tau                          ‘classical’ scheme
•   VEPP2000 -2 GeV                        round beam
•   DAFNE - PHI                            crab waist - > (SuperB)
•   KEKB - B                               crab cavity

                                    18/09/2012 Napoli SIF
                   A.Ghigo - Futuri acceleratori per la fisica delle particelle
BEPCII/(BESIII): upgrade of BEPC,
                    constructed in 2004-2008.
BEPCII in Beijing   — A two-ring factory style machine
                    — Provide beams to HEP & SR
                    Luminosity @1.89GeV: 6.49×1032cm-2s-1
VEPP 2000 - round beam
Ecm 1 to 2 GeV                    Lmax achieved 1*1031 cm-2s-1 at 1 GeV
C = 24 m                          (highest single bunch L at this energy)
1 bunch                           Potentially 2*1031 cm-2s-1 at 1 GeV
1011 particles                             1.6*1032 cm-2s-1 at 2 GeV

 21/07/09 Krakow - HEP 2009
                                             52
 C.Biscari - "Accelerators R&D"
DAFNE – LNF - FRASCATI

e+ e-
E = 0.51   GeVKrakow - HEP 2009
     21/07/09
                                      53
        1032- "Accelerators
     C.Biscari
L = 4.5        cm-2 sec-1R&D"
Crab-Waist crossing scheme
   Collision with large F is not a new idea …..
   Crab-Waist transformation is (P.Raimondi)

    Principle: beams more focused at IP + “large” crossing angle (LPA)
       + 2 sextupoles/ring to “twist” the beam waist at the IP (CW)
                                                                         • Lgeometric gain
sextupole                      (anti)sextupole                           • synchro-betatron and
   x ,y         *x ,  *y           x, y        x                 betatron resonance
                                                                          suppression
                   IP
                                                     y                • Weak parasitic crossing
                                                             2
                           x                                     no CWCW
                                                                  with compensation! (3D)(3D)
                                                                         compensation!
              no CW compensation!
    with CW compensation!
                                           Y
   e+                                                   e-
                               2sx/
                                       
                                                
        2sz*                                            z
                                 2sz
                                                        2sx
                                                                                        E. Paoloni, SuperB case
Gain in luminosity

KLOE classical with apparatus solenoidal field Siddharta CRAB waist without solenoidal field

         Lmax =1.7 1032 cm-2 sec-1                                            Lmax = 4.5 1032 cm-2 sec-1
            0.4 pbarn-1 / hour                                                   1.0 pbarn-1 / hour

                                          18/09/2012 Napoli SIF
                         A.Ghigo - Futuri acceleratori per la fisica delle particelle
SuperB @ Tor Vergata University campus
             Layout
                                                                            Main parameters
                                                                                 Parameter                    SuperB
                                         IP                                                        HER (e+)              LER (e-)

             Main Rings                                                Luminosity (cm-2s-1)                     1036
                                                                       C (m)                                    1200
                                                                       E (GeV)                       6.7                  4.18
                                                                       Crossing angle (mrad)                    60
                                                                       Piwinski angle                20.8                 16.9
                              LER Spin
                              Rotators                                 I (mA)                       1900                  2440
                                                                       ex/y (nm/pm) (with IBS)       2/5                 2.5/6.2
                                                                       IP sx/y (mm/nm)              7.2/36               8.9/36

  FEL Hall                                                             sl (mm)                        5                     5
                                                                       N. bunches                               978
                                                                       Part/bunch (x1010)            5.1                   6.6
                                                                       sE/E (x10-4)                  6.4                   7.3
                                                                       bb tune shift (x/y)       0.0026/0.107          0.004/0.107
                Injection &
                                                                       Beam losses (MeV)             2.1                  0.86
                RF section
                                                                       Total beam lifetime (s)       254                   269
                                                                       Polarization (%)               0                  70-80
                                                                       RF (MHz)                                 476
                                          Linac
                                         complex
                                        18/09/2012 Napoli SIF
                       A.Ghigo - Futuri acceleratori per la fisica delle particelle
Contribution ID: 561

                           SuperKEKB collider                                                         The SuperKEKB accelerator status

                                                                         e+ 4GeV 3.6 A                        Colliding
                                                                                                              bunches
                                                                                           Belle II

                                                                                                 New IR
                                                 e-   7GeV 2.6 A                                            New superconducting
                                                                                                            /permanent final
                                                                                                            focusing quads near the
                                  New beam pipe
                                  & bellows           SuperKEKB                                             IP

Replace short dipoles
with longer ones (LER)

                                                                               Add / modify RF systems
                                                                               for higher beam current
                                     Low emittance
                                     positrons to inject                       Positron source
                                  Damping ring
Redesign the lattices of HER                                                    New positron target /
& LER to squeeze the                                                            capture section
emittance

                                                  Low emittance gun
           TiN-coated beam pipe
           with antechambers                       Low emittance
                                                   electrons to inject

                                                                         Target: L = 8x1035/cm2/s
~1 abarn-1

KEK – B : Highest luminosity ever achieved : : Lmax 2.11 1034
Luminosity Prospects

                                                       50ab-1 by ~2020

             Results from Belle II @
             ~10ab-1
             LHC(b)
             Prospects of ILC…                                              L~8x1035 cm-2s-1

    10ab-1 (initial target ) ~ 2016

3year shutdown
for upgrade                                          L~2x1035 cm-2s-1

                              18/09/2012 Napoli SIF
             A.Ghigo - Futuri acceleratori per la fisica delle particelle
Timelines of HE projects
                      2012   2015   2020   2025          2030            2035

LHC
HL-LHC
HE-LHC
RHIC
LHeC
eRHIC
Higgs factory ILC
ILC 0.5 TeV
Higgs factory CLIC
CLIC 0.5 GeV
CLIC 3 GeV
LEP3
SuperTristan - TLEP
SAPPHiRE
MUON COLLIDER
LWFA LC

RDR (CDR) TDR R&D Operation Construction      PROPOSED            APPROVED

  12/09/12 Krakow – ESG                     C.Biscari - "High Energy Accelerators"
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