Powering tests preparationmeeting 11 Cryogenics Beam screen conditioning test done in S12 Already done in S34 S45 S81 The others will be done during the week maximum heat load test ongoing ID: 1025007
Download Presentation The PPT/PDF document "Mirko Pojer and Matteo Solfaroli" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1.
2. Mirko Pojer and Matteo SolfaroliPowering tests preparation_meeting 11
3. CryogenicsBeam screen conditioning test done inS12Already done in S34, S45, S81The others will be done during the week“maximum heat load” test ongoingS78 completed – to be validated!S23 will be completed and validated tomorrow 2 days will be needed at the end to set S23 and S78 in Run II configuration3/16/20163
4. General newsA couple of QPS/EE issues (detailed list below):Many circuits tripped above 55 A (compensation?)Many circuits tripped during ramp-down, due to 0V-crossing (“sensitivity” of new boards?)PID parameters changed for the IT correctors; tested in 5L, they are good but maybe not enough (330 K reached, CS lost); to be improved elsewhereProblem of communication in L2 is understood:“ During components upgrade we tried latest version of CMWClient and CMWServer based in RD3: QPS-236We found many issues that we are now investigating: QPS-237We rolled-back all machines, and kept only QPS_12_DT2FL with RDA3 until beginning tests to evaluate the issues found: ENS-16724When we rolled-back latest project QPS_12_DT2FL, for any reason our management tool got confused reporting installed version was old one (RD2) meanwhile currently one was latestone (RD3).I forced the uninstall and install of RD2 version, and issue was solved. “Jonas Arroyo3/16/2016Mirko Pojer – BE/OP4
5. Summary status3/16/2016Mirko Pojer – BE/OP5Circuit typeCompletion [%]RBs96% (7 commissioned)RQs89%ITs88%IPQs99%IPDs100%600 A97%120-60 A99% (just 1 x60 A in S34)Total98% (8466 oo 8592 successful tests)
6. Status of RB circuitsRB.A12 OKRB.A23 OK (1 quench @11040 A (C24R2=2195, 1st quench))RB.A34 OKRB.A45 OKRB.A56 quenched at 11076 A (B33R5=3375, quenched in 2008) – earth fault detected, fuse changed, tests will be re-started todayRB.A67 OKRB.A78 OKRB.A81 OK3/16/2016Mirko Pojer – BE/OP6
7. RB FPA at 2 kA on the rampFPA at 2 kA on the ramp was asked by EPC, to check the oscillation dumping system of the PC output filter; done onRB.A12RB.A23RB.A34RB.A45RB.A67RB.A813/16/2016Mirko Pojer – BE/OP7
8. RQD/F tested with new currentRQD/F.A12 – as soon as cryo is availableRQD/F.A23 - last step done with new valuesRQD/F.A34 - last step done with new valuesRQD/F.A45 - last step done with new valuesRQD/F.A56 – last step done with new valuesRQD/F.A67 – last step done with new valuesRQD/F.A78 – as soon as cryo is availableRQD/F.A81 - last step done with new values3/16/2016Mirko Pojer – BE/OP8
9. S12Missing in A12RSD1.A12B2: U_RES_max is slightly higher than criterion (73 instead of 70 mV) ONGOINGRQTF.A12B2: U_RES_max is 104 mV ONGOINGRQT13.R1B1: Noise in U_HTSRQT13.R1B2: U_Res is oscillating before quench@555A last test missingRQTL11.R1B1 and B2: trip on STRONG 0V crossing Jens’ action3/16/2016Mirko Pojer – BE/OP9No cryo conditions
10. S23Missing in XR2RCBXH2.R2: 3rd quench (477 A, 475 A and 470 A); lead cooling problem, ongoingMissing in A23ROF.A23B1 – OK, but wrong I_DCCT reading3/16/2016Mirko Pojer – BE/OP10Precycle performed on available circuits
11. S34Missing in A34RCBV13.L4B2resistance is double the maximum: Giorgio cleaned the contacts, the connection was changed, but still not good.RQD.A34 CL T badly regulatedSeries of manual ramps on RCD.A34B1 completed, as requested by MP3+EPC. The circuit completed all the additional tests without trips.Missing in ML4RU.L4 – PNO.a3 done3/16/201611
12. S45Missing in A45ROF.A45B1 – trip at 124 A; nDQQDG B wrong firmwareRQT13.L5B2 is not compensated (U_res saturated and trip at 55 A) – commissioned!RB.A45 was analysed before trying the precycle test and a voltage feeler was found blocked at 2000V. Since then it seems the signal was reset a couple of hours after the test (QPS team?). MP3 have failed the test, PNO.b2 has been repeated3/16/201612
13. S56 Missing in XR5RCBXH1.R5 – still problem of lead coolingMissing in LR5RQ4.R5 – completed, but problem in lead T regulationRQ5.R5 – completed, but problem in lead T regulationMissing in A56RB.A56 – Quench@ 11076 A; external fuse blownRQS.A56B2 – Z switch did not open another circuit tripping before it (ROD) completed!RQT13.R5B2 – trip at 56 A; 240 mV offset in Ures “PC turned around” – completed!3/16/201613
14. S67 MR6 - COMMISSIONEDMissing in A67RQS.A67B1 tripping at 56 A; nDQQDG A wrong firmwareRQ6.L7B1 and B2 tripping at 60 A Jens working on it (blocked till further notice)RSS.A67B2 – Z switch did not open trip at 56 A – completed!ROD.A67B1 – tripping at 120 A; nDQQDG A wrong firmwareROD.A67B2 – OK, but bad compensation - completedRSF1.A67B2 – failed because of U_CAP_A/B/Z – PNO.a3 missingRSD2.A67B2 – U_cap_Z far out of margin – Commissioned!RSD2.A67B1 – Z switch did not open tripping at 185 A – completed!RQT13.L7B1 – trip at 56 A,not compensated; nDQQDG B wrong firmwareRQTL10.L7B1 – trip at 56 A, nDQQDG A wrong firmware3/16/201614
15. S78Missing in A78ROF.A78B2 tripping at 56 A “current leads swapped”RQTL9/10.R7B1/2 – problem with the reset of the board; wrong firmwareRQ6.R7B1/B2 – Jens working on it (blocked till further notice)RSS.A78B1 tripping at 57 A; nDQQDG A wrong firmwareRQT12.R7B1 – trip at 57 A; nDQQDG A wrong firmwareRQTL11.R7B1/2 – 0V crossing tripRQTL7.R7B2 – 0V crossing tripRQTL8.R7B1 – 0V crossing tripRQTL8.R7B2 – quench3/16/201615New parameters for 0 V crossing filter deployed, but no cryo availabilityNo cryo conditions
16. S81Missing in A81RQTL11.L1B1 – trip at FT (possible EMC)3/16/201616Precycle performed on available circuits
17. AccessesCV at PM32 on Tue. 15/03Wed. 16th March, 8h30-10h15 AM: forcing the end-of-zone door of the UJ561 in order to reach the PM56 lift for the CMS Emergency guide training course (patrol lost)Thu. 17th March, 19h-21h: commissioning of the smoke detection of UXC55 (no personnel underground as the evacuation sirens will ring in all underground areas, LHC tunnel and CMS caverns)3/16/2016Mirko Pojer – BE/OP17
18.