Measurement Control and DAQ for Superconductors and Magnet labs
SCLabs 20-05-09 Adriaan Rijllart 1
Adriaan Rijllart, for the EN-ICE-MTA section
Outline
Status of control and DAQ systems for SC cable and magnet measurements
Maintenance plan (to keep present functionality) Development plan (to comply with new
requirements and assure long term functionality)
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Range of systems
Fixed test systems – SM18, Block 4, B163 Mobile systems – SM18, Cryolab (B165)
Not covered: systems for warm measurement such as for the Magnet Rescue Facility in B180, B181 and MQW in B867.
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Fixed measurement systems:
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Control Room
Test Bench
SM18
Fixed measurement systems:
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B163Block 4
Mobile measurement systems:
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Cryolab Mobile BenchSM18 High Voltage Test
Inventory of measurement systemsType Hardware OS Application Units
Quench DAQ Sun + VME Solaris HFDAQ, LFDAQ 7
Magnetic M Sun + VME Solaris MMP 16
High Voltage T Sun + GPIB Solaris HVT 6
Splice/Loss Sun + GPIB Solaris SRM/Loss 2
Snapback M PXI Pharlap B3B5 Snapback 1
HTS DAQ Mac + SCXI Mac OS HTS 2
Correctors DAQ Mac + SCXI Mac OS CQR 2
Diode DAQ PC + PCI Windows Diode 1
FRESCA Sun + GPIB Solaris FRESCA 1
M(H)/RRR/Rc Sun + GPIB Solaris Magnetisation/RRR/Rc 3
Critical current Sun + GPIB Solaris IC 4
Mobile Cryolab Mac + PCI Mac OS PMC 7
Mechanical M PC + GPIB Windows HBM ?
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Risk analysis of meas. systems
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Concern Problem Impact Prob Wght
LabVIEW on Solaris
Discontinued 5 years ago. But so far it keeps working.
High Low 3
Solaris No longer supported at CERN since 1 year. High Low 3
SBS34 Discontinued 4 years ago. Porting to another module requires difficult work.
Medium High 6
BAB740 Discontinued 4 years ago. BAB760 is produced and could replace the BAB740 with some work.
Medium High 6
VME 30 years old standard. Becoming obsolete. Produced by few companies. Expensive.
Low Medium 2
Measurement system Sun-VME
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EthernetEthernet
VME integratorsVME integrators
Power SupplyPower Supply
DVMsDVMsLossLoss M. M.
Operator ConsoleOperator Console
Quench DAQQuench DAQMagnetic MeasurementMagnetic Measurement
Sun
Sun Sun
VME ADCsVME ADCs
Upgrade to PXI
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EthernetEthernet
IntegratorsIntegratorsDVMsDVMs
Power SupplyPower Supply
Operator ConsoleOperator Console
Quench DAQQuench DAQMagnetic MeasurementMagnetic Measurement
ADCsADCs
Partial upgrade, keeping some VME
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EthernetEthernet
DVMsDVMs
Operator ConsoleOperator Console
Quench DAQQuench DAQMagnetic MeasurementMagnetic Measurement
ADCsADCs
VME IntegratorsVME Integrators
Reasons to adopt PXI Industry standard for instrumentation, based on PCI Supported by 60 vendors, commercialising >1000 modules PXI is 10 years old Smaller, cheaper than VME Key hardware features: triggering and synchronisation, shielding,
speed (PXI-express, follows PCI express development) Key software features by National Instruments: LabVIEW, LabVIEW
Real Time, integrated network communication, drivers Key OS features: Pharlap, VX-Works, Windows, Linux Connects to VME, which allows partial migration, keeping VME
investment where needed
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Maintaining present systems Step 1: Replace Sun with PXI, keep MXI-VME Advantages:
Up to date LabVIEW version Up to date OS (no Solaris)
Disadvantage: VME processors, modules and crates are kept (some
are obsolete)
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Upgrade plan Step 2: Replace VME with PXI
More compact, higher density modules 3 VME crates with 56 modules Replace 5 VME ADC with 1 PXI ADC
Higher performance ADCs Higher precision, up to 24 bit ADCs and 7 ½ digits DVMs Faster acquisition, if needed
Maintenance advantages: No SBS, BAB, VME, MXI
Disadvantage: higher cost
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Cost and resourcesMaintenance plan Unit cost
CHF# units Total cost CHF Manpower
(ManMonths)
SM18 + Block 4 replace Sun workstations
10 k 36 360 k 6
B163 PXI systems 10 k 8 80 k 1
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Upgrade plan Unit cost CHF
# units Total cost CHF Manpower (ManMonths)
SM18 DAQ 35 k 7 245 k 12
SM18 MM ? 9 ? ?
Block 4 DAQ 20 k 2 40 k 4
Block 4 MM ? 2 ? ?
B163 DVMs 3 k 16 48 k 4
Replacement of all Sun based systems
All Sun based measurement systems will need to be replaced (B180 Magnet Rescue Facility, B181, B867, …)
Not part of the SC laboratory review, but to be kept in mind
My inventory has 90 Sun workstations
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Recommendation Plan 1: maintenance.
Replace all Sun measurement stations with PXI processors, keeping the VME crates and modules.
Plan 2: upgrade. Develop one pilot DAQ system in PXI for validation. Replace all DAQ systems with PXI system.
B163 Plan 1: maintenance, replace Sun workstations. Plan 2: replace DVMs with PXI if needed for higher speed.
B165 Can be maintained as is (no Sun workstations) For new measurement systems PXI should be considered.
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