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Testing components for B-sensitivity TB 27.4.04 L.Jirden

Testing components for B-sensitivity TB 27.4.04 L.Jirden. Estimated B-fields in UX Tests done so far Tests to be done Summary. B-field in UX – worst case (D.Swoboda TB 27.1.04). Rack group A and B: ~ 110 Gauss. Rack group D: ~ 200 Gauss.

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Testing components for B-sensitivity TB 27.4.04 L.Jirden

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  1. Testing components for B-sensitivity TB 27.4.04 L.Jirden • Estimated B-fields in UX • Tests done so far • Tests to be done • Summary

  2. B-field in UX – worst case (D.Swoboda TB 27.1.04) Rack group A and B: ~ 110 Gauss Rack group D: ~ 200 Gauss

  3. B-field in UX – worst case (D.Swoboda TB 27.1.04) Rack group C: ~ 50 Gauss

  4. TOF TOF TOF TOF TRD TRD TRD V0 FMD Acorde Acorde TS/EL T0 T0 Sniffer Sniffer FMD V0 TPC TRD TRD TRD TOF TOF TOF TOF MTRG MTRG MTRG MTRG EXD4/29 EXD5/29 37 30 29 22 21 14 13 5 4 1 B ~ 110 Gauss 39 38 MTRK 13 9 MTRK TPC MTRK MTRK MTRK TOF TOF MTRG MTRG MTRG TPC MTRK 16 12 8 1 C ~ 50 Gauss EXD2/29 PMD SPD SSD 5 1 TPC CTP CTP 23 20 17 D ~ 200 Gauss PHOS PMD SPD SSD 10 6 EXD3/29 TRD CTP CTP Vacu PHOS TPC TPC SDD 15 11 TRD CTP CTP 25 22 19 TS/EL TPC TPC SDD 20 16 EXD1/29 MTRK MTRK MTRK LHC LHC MTRG MTRG MTRG 38 34 MTRK 33 26 MTRK MTRK 41 37 A ~ 110 Gauss HMPID HMPID HMPID TOF TOF TOF TRD TRD TRD SSD TS/EL SPD SPD SDD SDD SSD SSD SSD TPC TRD TRD TRD TOF TOF TOF MTRG MTRG MTRG MTRG EXD6/29 EXD7/29 38 30 29 22 21 14 13 5 4 1 Based on rackalloc.doc 16/04/04 jpv

  5. Components tested so far • Ventilators 1st sign stop • VME Fan-tray 80 120 Gauss • PL500 big vent • outside box 80 120 Gauss • inside box 100 180 Gauss • PL500 small vent • outside box 50 90 • inside box (extrapolated) 70 120 Gauss • Transformers • PL500 PS 300 350 Gauss • Ethernet isolation transf. ? 200 Gauss • Electro valves • 4 types used in gas systems 300 400 Gauss • Relays ? • Filters ?

  6. Test of ventilators PAPST 614MN outside PS cabinet Fan restarts Fan stops PAPST 614MN inside PS cabinet

  7. Tests to be done • At P2 with L3 & Muon magnets powered • Stray field measurements in the UX: H.Taureg • At critical rack locations, outside/inside racks • Equipment functionality tests: detector groups • Inside L3 magnet and in the UX • When: • End July 2004 • Test of devices in Magnet test facilities • Any device that might be sensitive to low B-fields: • Power supplies, ethernet devices, etc • When: • Start in May 2004

  8. Power distribution & Racks • No rack ventilator units possible (except in zone C) Power limited to ~ 3 kW per rack See: http://documents.cern.ch//archive/electronic/cern/groupdoc/epess/public/epess-2003-014.pdf all ux rack users to check and adapt their rack layout !

  9. HV & LV Power Supplies

  10. PLC’s • PLC’s have relays and transformers but no ventilators • Probably ok for >200 Gauss • Should nevertheless be checked

  11. Ethernet • Detector groups to precise to integration team (J-P.Vanuxem) in which racks and for what equipment ethernet is required.

  12. VME

  13. Other equipment • UX users to check/test any other equipment which might be sensitive to B-field. • Test facilities at CERN: • TA1 Magnet Lab B-168 • Gap ~ 25 cm reservation: W.Flegel, PH/TA3 • CMS Magnet Lab B-887 • Gap ~ 50cm reservation: B.Cure, PH/CMI • dipole in T7 beam-line, east hall • Gap ? reservation: SPS coordinator • GOLIATH dipole in H4 beam-line • Gap ? reservation: SPS coordinator • CMS magnet in B-887 already reserved 10 – 21 May for ALICE and PH/ESS use

  14. Summary • Stray field measurements will be done at P2 in July – August to refine the B-map Action: TC (H.Taureg) • Equipment tests will be started in May at CERN test facilities to verify B-sensitivity • Commonly used devices: Action:CERN groups + TRD • Specific detector devices: Action:detector groups • Rack layouts to be adapted in view of water cooling only (racks without ventilator units) Action: all UX rack users • Move B-sensitive equipment to less exposed racks wherever possible Action: detector users

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