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MuCool Test Facility Instrumentation Update

MuCool Test Facility Instrumentation Update. M. Haney, D. Errede, Z. Conway University of Illinois at Urbana-Champaign 12/13 August 2002. Instrumentation. Seeking an intrinsically safe solution for instrumenting the LH 2 absorber in the MTF

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MuCool Test Facility Instrumentation Update

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  1. MuCool Test FacilityInstrumentation Update M. Haney, D. Errede,Z. Conway University of Illinois at Urbana-Champaign 12/13 August 2002

  2. Instrumentation • Seeking an intrinsically safe solution for instrumenting the LH2 absorber in the MTF • Prudent to accommodate MICEand European safety considerations • i.e. do it right the first time… m. haney, et al.

  3. Objective - Safety • Intrinsic safety, if possible • Limited power per channel • Good idea for Fermi; required for Europe • Gas-purged enclosure, if necessary • 19” rack, 40U tall m. haney, et al.

  4. Instrumentation (1) • Lakeshore 218S • 8 channel cryo temperature monitor • +/- 21m K at 10 K • 16 readings/s • GPIB interface (to PC) • TG-120PL GaAlAs diodes (8) • -180mV/K at 4.2 K • B < 5 T; rad hard m. haney, et al.

  5. Instrumentation (2) • FISO Fiber-optic strain and temperature • BUS chassis, with 4 (up to 8) modules • 1000 readings/s • RS-232 interface (to PC) • FOS-N strain sensors • +/- 500 me; 0.01% full scale; 0.2mm O.D. • FOT-L temp sensors • 0.1 K resolution; 1.5mm x 32mm (10mm active) • Slow: 1.5 second response… m. haney, et al.

  6. Instrumentation (3) • Gateway E-4000 PC • 1.8 GHz, 1Gbyte RAM, 0.5Gbyte cache • 120Gbyte disk, Windows 2000 • 15” LCD flat panel display • 640x480 CCD camera, microphone • PCI-MIO-16E-1 • 16 channel ADC, 1.25 Msample/s, 12 bits, +/-10 V • Tripplite Smart UPS • 3000 VA m. haney, et al.

  7. Instrumentation (4) • IRM • 64 channel multiplexed ADC • 16 bit, 100 Ksamples/s • ACNET network connection • All PC data will be posted to IRM for ACNET access m. haney, et al.

  8. Instrumentation (5) • MTL7055ac barriers • Low level AC • 24 W per line • 3 V max • MTL7060ac barriers • Star-connected AC • 101 W per line • 8.5 V max m. haney, et al.

  9. (basic) Barrier fuse Power + Signal “safe circuit” Return Ground m. haney, et al.

  10. Signals inside (the cryostat) • 8 (cryo) temperatures • readout via GPIB + LabView (PC) • Multiple fibers • FISO strain, temperature (4) • Pressure, flow? • Laser occlusion (2) • Simple spark detectors (2) • (light pipe to photodiode) • 25(ish) 4-wire bolometry strips m. haney, et al.

  11. (more) Signals inside • Piezo vibration sensor • via (16 chan/12 bit) ADC and LabView (PC) • Local (64 chan/16 bit) IRM channels • via “LabView” (see last slide) • MICE channels (?) • placeholder for the future… m. haney, et al.

  12. Signals outside • USB (4 wires, and shield) for CCD camera and microphone • via PC • Many voltages, currents, temperatures, pressures • magnets, beam position monitors, etc. • Most available from ACNET or local IRM • via “LabView” (see last slide) • or Cyro-PLC m. haney, et al.

  13. Two Possibilities (1) • Intrinsically safe Hazard Safe Sealed Conduit(s) Barrier(s) ACNET IRM Cryo(temp) FISO PC w/16 chan ADC network power Intrinsically safe signal conditioners and transmitters UPS m. haney, et al.

  14. Two Possibilities (2) • Gas-purged box Hazard Safe Barrier(s) Sealed Conduit(s) ACNET IRM Cryo(temp) FISO PC w/16 chan ADC network power UPS m. haney, et al.

  15. This Summer – Z. Conway • LabView interface • GPIB to cryo temp monitor - works • PC-internal ADC (e.g. for piezo) – “works” • Simple ADC data read - works • High rate collection and compression – not yet • IRM communications • IRM-ADC Read - works • Write – any moment now… • Integration – remains! m. haney, et al.

  16. Open Issues • Wire+Shielding Concerns • Noise/sensitivity issues due to wire+barrier resistance? • Approx 12 W /ft for 36 AWG manganin wire • 48 W to 202 W added by barrier • And diode capacitance… • Common mode (surges) due to magnets? • Need to protect electronics without burning barriers • Cable plant into solenoid m. haney, et al.

  17. Open Issues (2) • Software Concerns • Posting data to the IRM • For ACNET access • Reading data from ACNET • For PC access • Remote control of PC • Citrix ICA, PCAnyWhere, etc. • LabView web-remote instrumentation • KVM? m. haney, et al.

  18. Open Issues (3) • FISO strain and temp sensors • Not official rated below -40 C (!) • Temp has been used at 35 K (custom) • No experience with strain gages • Company very willing to work with us • To adjust signal conditioner, correction curves, etc. • Will require some form of agreement • Confidentiality, exclusivity for the instrument • Yet freedom to use and publish measurements • Also pressure, flow? m. haney, et al.

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