Operation-Readiness Clearance of the Slow-Control Rack for the SpinQuest Experiment at NM4 - Confluence
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Operation-Readiness Clearance of the
Slow-Control Rack for the SpinQuest Experiment
at NM4
VYS. Bandara∗, A. Waqar†, Z. Akbar‡, and D. Keller§
University of Virginia
August 13, 2021
Abstract
The SpinQuest experiment at NM4 requires superconducting magnet
and cryogenic system to polarize the target. Various instruments involved
in the polarized-target system are housed in several electronic racks: Mag-
net rack, slow-control rack and NMR rack. This document describes all
instruments in the slow-control rack including the power requirement, ca-
bles and connections. The magnet rack and NMR rack are described in
separate documents.
This document consist of five sections. The first section provides the
introduction, scope and purposes of the document. The second section
gives the layout and general description of the system. The third section
provides the information for each instruments and the power consumption.
Section four provide the load distributions on the Power Distribution Unit
(PDUs) and section five provides the summary.
∗ Email: vibodha@iat.cmb.ac.lk
† Email: whm5yk@virginia.edu
‡ Email: za2hd@virginia.edu
§ Email: dustin@jlab.org
1Contents
1 Introduction, scope and purposes of the document 3
2 Layout and General Description of the System 4
3 Instruments and Power Consumption 9
4 Load Distributions on PDUs 10
5 Summary 13
21 Introduction, scope and purposes of the doc-
ument
The polarized target is one of the critical system for the SpinQuest experiment
at NM4. Many electronic instruments are required to polarize, maintain and
measure the polarization degree of the target and to monitor and control the
cryogenic environment. Those instruments are organized in several electronic
racks: Magnet rack, NMR racks and slow-control rack. Figure 1 shows the
location of these racks along with the Root pumps and the target cave.
Figure 1: Top view of the cryo platform showing the location of the magnet
rack, NMR rack, slow-control rack, root pumps and target cave.
This ORC document provides the description of the slow-control rack which
include the layout, description for each instrument and power consumption.
The NMR rack, magnet rack and other subsystems of the polarized target are
described in separate documents.
There are various instruments that will be housed in the slow-control rack.
Those instruments are organized into several subsystems:
1. Cryogenic-control subsystem.
2. Target-lifter and Outer-vacuum subsystem.
3. Microwave subsystem.
3The purpose of this document is to obtain permission to turn on the instru-
ments for testing prior to the experiment and during the experiment.
2 Layout and General Description of the System
The layouts for each subsystems of the slow-control rack are shown in figure 2, 3
and 4 . All instruments except the microwave power supply work with single-
phase 120 VAC input. The microwave power supply (CPI VPW 2838) needs 240
VAC with no neutral and connected directly to the wall outlet via an isolation
transformer. The 120 VAC input is drawn from the wall outlet and distributed
to the instruments via three power distribution units (PDUs).
Most instruments are commercial product. Target-lifter box is a custom
product with an approve ORC (the target lifter ORC will be attached to this
ORC). The instruments housed in the slow-control rack are organized into three
subsystems:
1. Cryogenic-control subsystem. This subsystem is responsible to monitor
the cryogenic environment. The cryogenic-control subsystem consist of
several readouts for the pressure sensors, temperature sensors, liquid-level
sensors and flow meters. Those sensors are located at various places in
the target cave and Root pumps area. The instruments are communicated
via RS232 or GPIB protocols. The data then transferred to the counting
house via Ethernet cable.
Two Lakeshore 218s will be used to monitor the temperature in the fridge
and target stick which is inside the target dewar. There are three pressure-
sensor readouts that monitor the pressure value of the outer-vacuum shield
and helium vapors. The level of the liquid helium that cool the target will
be measured via American Magnetic Inc. (AMI) 1700.
Teledyne THCD 401 is a multi channel instrument to monitor and control
the flow of the fluids. We will use this instrument to control the flow of
the pumps used to pumping out the helium vapor from the magnet dewar
and separator volume. We will also use Teledyne THCD 401 to monitor
the helium vapor flow out of the target nose.
All instruments are communicated via RS232 or GPIB protocol. We will
convert the communication connections to USB, and then to Ethernet be-
fore transmitting the data to the control room. Therefore, there will be
several RS232 to USB cables and GPIB to USB cable. Those communi-
cation cables are connected to USB hubs and then to USB to Ethernet
converter.
2. Target-lifter and Outer-vacuum subsystem. The target polarization will
decays due to the radiation damage from the proton beam. Therefore, the
target needed to be heated (annealing) to restore the polarization by lifting
the target up to the annealing plate. Target-lifter subsystem is responsible
to control and monitor target cup positions. This subsystem consist of a
4custom lifter control box and ADC box in the rack that connect to stepper
motor, position switches and potentiometer in the cave. The target lifter
subsysem has a separate ORC that has been approved. There is also a
camera that transmit the data via Ethernet to the control room.
The magnet dewar is protected from thermal contact by the outer-vacuum
chamber. This high vacuum is achieved using a Turbo-Molecular pump
that controlled from the rack via DCU 600. The vacuum pressure then
monitored using a pressure readout (TPG 361) from the rack.
3. Microwave subsystem. The target will be polarized using Dynamic-Nuclear
Polarization technique (DNP). This technique require a 140 GHz mi-
crowave generated from an EIO tube. The tube is located in the tar-
get cave. The power supply for the EIO tube (CPI VPW 2838) connect
directly to the 220 VAC wall outlet with no neutral. The frequency gen-
erated will be monitored using EIP frequency counter placed in the rack.
An interlock will monitor the EIO temperature and turning off the power
supply if the EIO temperature exceed certain value. There is a separate
and approved ORC for the microwave setup and will be attached to this
document.
5Notes:
Slow-Control rack area SILEX DS510
AC0 = AC Power cord
USB-Ethernet Converter AC0
(Cryo-Control Sub System) 120 VAC, 2.5 W
RS232 to USB = RS232 to USB cable CYCLADE PM10-
@120 VAC, I = 0.02 A L30A
GPIB to USB = GPIB to USB cable 120 VAC PDU
USB
GPIB = GPIB cable Imax = 30 A
ATOLLA USB 3.0 USB
USB = USB cable
RS232 to USB 11-Port USB Hub.
FMC = Factory-made cable AC0
120 VAC, 100 W
RS232 to USB @120 VAC, I = 0.83 A
Target-cave area
RS232 to USB
MKS 690A 100 Torr RS232 to USB AC0
Pressure sensor GPIB to USB
AC0
Lakeshore 218 Lakeshore 218
GPIB
Temperature readout Temperature readout
MKS 722B 22 AWG X 14 core 120/240 VAC, 18 W 120/240 VAC, 18 W
Pressure sensor @120 VAC, I = 0.15 A GPIB @120 VAC, I = 0.15 A
22 AWG X 14 core AC0
AC0
FMC MKS #CB280-2-10
FMC MKS #100007555
6
MKS 946 MKS 670
27 AWG X 4 core Pressure readout Pressure readout
120/240 VAC, 150W 120/240 VAC, 40W AC0
@120 VAC, I = 1.25A @120 VAC, I = 0.3A
Root-pump area AC0
FMC MKS #100007555
MKS 722B
Pressure sensor AMI 1700 THCD 401 TPG 361
He level readout Flow meter readout Pressure readout AC0
HFC-303 120/240 VAC, 264 W 120/240 VAC, 72 W 120/240 VAC, 45 W
Target & @120 VAC, I = 2.2 A
Flow meter @120 VAC, I = 0.6 A @120 VAC, I = 0.38 A
Magnet Dewar
HFC-305 FMC Teledyne #AF-100-AM AC0
Flow meter FMC Teledyne #AF-100-AM
HFC-303 FMC Teledyne #AF-100-AM
PKR 361 Flow meter
FMC Pfeiffer #PT 448 258-T
Pressure sensor Wall Outlet, 120 VAC
Figure 2: The layout and wiring scheme of the cryogenic-control subsystem.Target-cave area Slow-Control rack area Control-room area
Notes: (Target lifter & Outer Vacuum Sub System)
AC0 = AC Power cord Low-Voltage Cable x 15 Lifter-Monitor
ET = CAT6 Ethernet cable panel
FMC = Factory-made cable
Cryo-Control Sub System
RS232 to USB SILEX DS510
= RS232 to USB cable ATOLLA USB 3.0
ET
USB = USB cable 11-Port USB Hub. USB-Ethernet Converter Target PC
120 VAC, 100 W 120 VAC, 2.5 W
USB
@120 VAC, I = 0.83 A @120 VAC, I = 0.02 A
CYCLADE PM10-L30A
USB ET 120 VAC PDU
RS232 to USB NetGear GS108 Imax = 30 A
ET
USB-202 DAQ Devices 8-Port switches
120 VAC, 2.5 W AC0
@120 VAC, I = 0.02 A
22 AWG X 15 core
Position switches
ET MeanWell EDR150
AC0
18 AWG X 4 core 18 AWG X 2 core AC/DC Converter
Stepper motor Lifter-Control Box 90-264 VAC, 300 W
@120 VAC, I = 2.5 A
7
ET 18 AWG X 4 core
String potentiometer 18 AWG X 3 core Keysight 3646A AC0
ADC Box Bench Power Supply
18 AWG X 4 core
String potentiometer 18 AWG X 3 core 120/240 VAC, 60 W
@120 VAC, I = 0.5 A
AC0
FMC P 0998 649 DCU 600 AC Doctor INC
TMH 1001 P Turbo Pump Controller
Camera AC Adapter AC0
Turbo Molecular
FMC PM 051 107-T 120/240 VAC, 590 W 100-240 VAC, 72 W
Pump @120 VAC, I = 3.8 A @120 VAC, I = 0.6 A
AC0
18 AWG X 2 core
Wall Outlet, 120 VAC
Figure 3: The layout and wiring scheme of the target lifter and outer vacuum subsystem.1 2 3 4 5 6
Input Voltage 208VAC with no Neutral
Primary input voltage H1 and H3 = 208 Secondary output voltage X4 and X5 = 208 Line Fusing @ 10 A (onboard)
EMERSON Isolation Transformer 208 VAC
Microwave Power supply
Prime Power Stander 3 Pin, male, IEC 320 Wall Outlet (110VAC)
SOLA MCR
VPW 2838 9.92 KV
6 ft 16 AWG Computer Power Cord - NEMA5-15P to C13, Power NEMA 5-15
CAT No 63-23-215-8 -0.081 4.43KV @ 80.0 mA
INPUT at 60 HZ 95-130/175-235/190-260/300-52-
A INPUT CURRENT @ 18.0/10.0/4.5A
Wall Outlet (Single Phase)
Body
Ground
Collector
Anode
Cathode
filament +
filament -
OUTPUT RATING 120/208/240V
1500VA
AC Power Cord (s)
AC Power Cord (s)
6 X ROWE-TOL ED0. 0H AWM 15KVDC 150C STYLE 3239 VM-1
Body
Ground
Collector
Anode
Cathode
filament +
filament -
Inside the box circuitry
CO1K
1K
@ 60 Amp
1
PI1K01 2
PI1K02
Collector PI16A 105KE02 PI16A 105KE01 22-10 AWG Barrier Strip
CO16A 105KE
16A 1.5KE
EIK Interconnection to Power supply
Double Row Terminal block
B
Body
2 X 16 AWG AWM STYLE1067 80C 300V
Ground
3 X ROWE-TOL ED0. 0H AWM 15KVDC 150C STYLE 3239 VM-1
Collector
Anode
Cathode
Filament+
Filament-
1 X ROWE-TOL ED0. 0H AWM 15KVDC 150C STYLE 3239 VM-2
6 ft 18 AWG Computer Power Cord - NEMA5-15P to C13, Power NEMA 5-15
Pulsed Microwavefrequency counter
Double Row Terminal block 588C
Body COS? AC Power Strip
PIS?01 PIS?02
@ 30 Amp
120 VAC, 60HZ
TOP Cover Switch
Purpal (Body)
BNC @ 100VA
Blue (Collector)
Orange (Anode)
White (Cathode)
Yellow (Filment +)
Yellow (Filment -)
Brown (Ground)
RF_Out RF_IN
M17/60-RG142 MIC0C-17 27478 onboard Fuse 1.5A
Harbow industries
8
VKT 2438P6M 6 ft 14 AWG Computer Power Cord - NEMA5-15P to C13, Power NEMA 5-15
Extended Interaction Oscillators
Max Beam Current 80 mA
CL2 75C 28AWG OR AWM20266 80C 3M NU CSA AWM 1A/B
Thermocouple Type - T
6 ft 18 AWG Computer Power Cord - NEMA5-15P to C13, Power NEMA 5-15
6 ft 18 AWG Computer Power Cord - NEMA5-15P to C13, Power NEMA 5-15
Remote Interface
Cathode Voltage: 9.8KV @ 100mA
Interlock system
25 Pin D-Sub connector
C Anode Voltage : 6.1 KV Temperture Monitor
Cpntrol room rack CW Output Power : 20W 115V, 60 HZ
@2 A
Center Frequency 140 GHZ
onboard Fuse 5A
Target Cave
Microwave Remote Panel
Auxliary Power : 28V +/- 15% Chiller ThermoFlex
@ < 2.0A
115V, 60 HZ
@12 A
Experiment Frequency requirement onboard Fuse 20A
Test Frequency RF Power Out Cathode volt wrt Body Cathode current Body Current Anode Volt Collector Volt Tunining Range
wrt Cathode wrt Ground
140.5 GHZ 15.89 W 9.92 KV 80.0 mA 3.7 mA 4.43KV -0.080 198 MHZ
D Operated by Fermi Research Alliance, LLC
under Contract No. DE-AC02-07CH11359
with the United States Department of Energy.
Size Rev
* ENGINEER: * Waqar Ahmed
B *
DRAWN: *
Number Date: 7/12/2021 Sheet CHECKED: *
* Time: 8:50:23 AM * of * APPROVED: *
C:\Users\waqar\Desktop\spin\Spin_magnet\Micro-wave.SchDoc
1 2 3 4 5 6
Figure 4: The layout and wiring scheme of the microwave subsystem.3 Instruments and Power Consumption
This section provides all instruments housed in the slow-control rack and their
power requirement. The information will be organized in separate tables based
on the rack subsystems (cryogenic control, target lifter and outer vacuum and
microwave subsystems).
Table 1: List of instruments and power consumption of the cryogenic-control
subsystem.
Table 2: List of instruments and power consumption of the target lifter and
outer vacuum subsystem.
9Table 3: List of instruments and power consumption of microwave subsystem.
The microwave-power supply (VPW 2838) will be connected to a special outlet
which is 220 VAC with No neutral via an isolation transformer. The chiller will
also be connected to the separate outlet near the cave.
4 Load Distributions on PDUs
There are three single phase, 120 VAC Power Distribution Units (PDUs) in the
slow-control rack. It is very important to distribute the load (current) equally
among these PDUs. Table 4, 5 and 6 show the instruments connected to each
PDUs to achieve a uniform load among PDUs which is around 5.5 A. Table 7
shows the current load for each PDUs and the total current consumed by all
instruments connected to the single phase, 120 VAC outlets.
Table 4: List of instruments connected to the first PDU.
10Table 5: List of instruments connected to the second PDU.
Table 6: List of instruments connected to the third PDU.
11Table 7: Current consumed by each PDUs and total current consumption
125 Summary
Slow-control rack houses many instruments which are important to polarize
the target and monitor the cryogenic environment. The rack consists of three
subsystems: Cryogenic control, target lifter and outer vacuum and microwave
subsystems. Most instruments are commercial product. Target-lifter box is a
custom product with an approved ORC.
Cryogenic-control subsystem monitor cryogenic environment such as tem-
perature, pressure and liquid helium level. Target-lifter subsystem control the
position of the target cup, outer vacuum subsystem maintain the vacuum level
through a Turbo molecular pump. Microwave subsystem is responsible for po-
larizing the magnet using the Dynamic Nuclear Polarization (DNP) technique.
A 140 GHz wave is generated via an EIO tube. The tube is powered by a high-
voltage power supply connected to the 240 VAC with no neutral outlet via an
isolation transformer.
Most instruments are powered by single phase, 120 VAC input via three
Power Distribution Unit (PDUs). The maximum current drawn from those
instruments is 16.41 A. Microwave power supply will be connected directly to
240 VAC outlet with no neutral via an isolation transformer.
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