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

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

3. 12/13 August 2002m. 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

4. 12/13 August 2002m. 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

5. 12/13 August 2002m. 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  ; 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…

6. 12/13 August 2002m. 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

7. 12/13 August 2002m. 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

8. 12/13 August 2002m. haney, et al.8 Instrumentation (5) MTL7055ac barriers –Low level AC 24  per line 3 V max MTL7060ac barriers –Star-connected AC 101  per line 8.5 V max

9. 12/13 August 2002m. haney, et al.9 (basic) Barrier Power + Signal Return Ground “safe circuit” fuse

10. 12/13 August 2002m. 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

11. 12/13 August 2002m. 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…

12. 12/13 August 2002m. 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

13. 12/13 August 2002m. haney, et al.13 Two Possibilities (1) Intrinsically safe UPS PC w/16 chan ADC FISO Cryo(temp) IRM Barrier(s) network ACNET Sealed Conduit(s) Intrinsically safe signal conditioners and transmitters power Hazard Safe

14. 12/13 August 2002m. haney, et al.14 Two Possibilities (2) Gas-purged box UPS PC w/16 chan ADC FISO Cryo(temp) IRM Barrier(s) network ACNET Sealed Conduit(s) power Hazard Safe

15. 12/13 August 2002m. 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!

16. 12/13 August 2002m. haney, et al.16 Open Issues Wire+Shielding Concerns –Noise/sensitivity issues due to wire+barrier resistance? Approx 12  /ft for 36 AWG manganin wire 48  to 202  added by barrier –And diode capacitance… –Common mode (surges) due to magnets? Need to protect electronics without burning barriers –Cable plant into solenoid

17. 12/13 August 2002m. 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?

18. 12/13 August 2002m. 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?