NQPS trips due to EMC transients 30/06/20111ZCh, TE-MPE-TM Z.Charifoulline - # nQPS.BS signals in A12 & A34 # statistics over.

Slides:

Advertisements

Similar presentations

Status of Cryogenics at point 4 following the power cut L. Tavian 20 August 2011.

Advertisements

6 th April 2010 MP3 weekly summary – issues and follow-up 0v1 M. Zerlauth for the MP3-CCC shift crew.

MP3 report – week 17 19/4/2010 – 25/04/ interventions MP3/QPS team in CCC Monday Morning Meeting : 26th of April 2010.

8:16 SB 25ns dumped by RF; integrated lumi 0.6 nb-1. 9:14 BIC problem in TI8 and CMS recovering their tracker 10:09 Abort gap cleaning commissioning. 16:29.

Beam commissioning strategy Global machine checkout Essential 450 GeV commissioning System/beam commissioning Machine protection commissioning.

LHC 14 & 15 April :22: Ramp to 6.5 TeV lost due to MUFO, resulting in quench 10:30: Access during cryo recovery 16:00: Pre-cycle 17:05: RB.A78 short.

ECE 201 Circuit Theory I1 Sinusoidal response of circuits The switch is closed at t = 0. Determine the current i(t) for t >= 0. i(t)

How to improve operational efficiency ? [R. Alemany] [CERN AB/OP] [Engineer In Charge of LHC] Beam Commissioning Workshop, Evian Jan 2010.

LHC 30 th and 31 st July :10 Finish scrubbing fill 25 ns trains by operator dump. –No XPOC data … 08:40 Inject for another scrubbing fill 09:09.

MP3 report : W49 (6 slides, 6’) J.Ph Tock for the MP3 team Since oral report last week (24 th of November) 1JPhT – LMC 1st of December 2010.

MP3 report : W27 to W33 (22 slides, 10’ ?) J.Ph Tock for the MP3 team: TE-MPE : N. Catalan, R. Denz, M. Koratzinos, A. Verweij, M. Zerlauth TE-MSC : B.

How to achieve higher redundancy of the UPS for QPS ? -The lack of redundancy concerns the supply lines from UPS to consumer but equally parts of the UPS.

“we believe the reason why the first bunch is more intense than the following 3 is that it's on that one that the SPS RF loops are locked” Philippe & Django.

1 Copper Stabilizer Continuity Measurement Project Copper Stabilizer Continuity Measurement Status & Plans – May 2011 MPE-TM – 12 May 2011 M. Koratzinos,

Frequency Transfer Function Measurements during LS1 Emmanuele Ravaioli Thanks to Arjan Verweij, Zinur Charifoulline, Andrea Musso MPE-TM

Proposal for FTF measurements on dipole magnets in the tunnel during the Christmas break Emmanuele Ravaioli TE-MPE-TM

Friday March 4 th LHC morning report the short story: from a global point of view we had basically only one access !!!

Friday morning Dump fill due to the trip of the RQF.A78  intervention had been just planned for the morning on the circuit Access, interventions:  RQF.A56/78,

Recent cross-wiring issue and implication for circuits protection Bozhidar Panev TE-MPE-CP

Measurement and data extraction. How to measure the splice and diode interconnections. Accuracy and issues of these measurements. Data extraction issues.

M. POJER, ON BEHALF OF THE USUAL BUNCH OF SUSPECTS… S UPERCONDUCTING CIRCUITS RE - COMMISSIONING AFTER THE 2011 C HRISTMAS BREAK.

BCWG - 16/11/20102 Content WHY do we need a HW Commissioning campaign? WHAT are we going to do? HOW are we going to do it? ElQA QPS Powering Tests Planning.

Chronology - I  Year Jan. 2008: from time to time short circuits failures in chains supplying low voltage to C-W bases (either +6V or -6V, ~5 lines.

NQPS commissioning …a long way to go. Topics nQPS component overview Enhancements in Firmware Commissioning diagram Detailed task list Summary.

09:25 Operator dump fill #2178, integrated lumi 107/108/18 nb-1. Trip of RQ4.R6 (fire heaters discharged) just after the beam dump but the QPS gave no.

Andrzej SIEMKO CERN, Geneva The 2014 Kyoto Workshop on HTS Magnet Technology for High Energy Physics –WAMHTS-2.

MP3 List of main Issues during March 2010 MP3 - Team.

1 15 April 2010: Post Mortem Analysis by M.Zerlauth Automated analysis of Powering Events – Progress update.

Quench Detection System R. Denz TE-MPE-EP on behalf of the QPS team.

From yesterday LHC status Wednesday 26 th Welcome Verena back on shift 07:08 Access in PM85 for piquet EPC (O.Fournier).  Fuse on RD2.R8 circuit.

Machine Protection Review, R. Denz, 11-APR Introduction to Magnet Powering and Protection R. Denz, AT-MEL-PM.

Tuesday 26 th April – morning shift 08:00 Great news, cryo is back! Unluckily it was followed by many other problems, one after the other one. So, spent.

Tue 9/8 – Wed 10/8 Stable beams # :18 RQT12.R7B1 trip. End of STABLE BEAMS # ~86 pb -1 in ~19 hours 20:30 No beam from PSB (RF problem in ring.

06:00 – Ongoing injection problems on beam 2  07:42 – Start of injection investigations  11:11 – Injection problem fixed. Resteering of transfer line.

TE-MPE-CP, RD, 12-Dec QPS - analysis of main problems, areas to target, possible improvements R. Denz, TE-MPE-CP Evian 2011.

MPE Workshop 14/12/2010 Analysis of the RB and RQF/D splice data recorded with nQPS - status and plans towards full automation Analysis of the RB and RQF/D.

Injection issues overnight 10:50 Access  QPS & EPC  Vacuum leak SPS – magnet to be replaced Monday – cycling for FT and LHC only over the weekend 12:15.

CSCM (Thermal Amplifier) Sequence and detailed planning 07/10/2011 M.Solfaroli Thanks to: K.Brodzinski, G.D’Angelo, M.Koratzinos, M.Pojer, R.Schmidt, J.Steckert,

Thursday 27 th October 00:57 fill 2257 dumped during squeeze (RQTF.A67B1) 03:52 stable beams fill #2258 4:33 Dumped, problem of LBDS dilution kicker power.

07:00 Dump fil #2219, 123 pb -1 delivered. Trim TDI parking position to +/- 55 mm in the collimator BP trimmed the temperature kicker limit to 62 degrees.

TE-MPE-CP, RD, 28-Sep Problems with QPS DAQ Systems During LHC Operation, 1 st Results from 2010 CNRAD Tests R. Denz TE-MPE-CP.

RF Commissioning D. Jacquet and M. Gruwé. November 8 th 2007D. Jacquet and M. Gruwé2 RF systems in a few words (I) A transverse dampers system ACCELERATING.

Update on the automation of quench heater analysis Zinour Charifoulline 18/06/2015TE/MPE-PE, ZCh1 Automation team: Odd Oyvind Andreassen, Jean-Christophe.

Tuesday 3 rd October STABLE BEAMS until 12:25 when we switched to ADJUST for a EOF test for Tobias  dump B2 first and then B1.  Dump at EOF test because.

Quench behavior of the main dipole magnets in the LHC By Gerard Willering, TE-MSC On behalf of the MP3-CCC team Acknowledgements TE-MSC, MP3, BE-OP, TE-MPE,

Friday 15th June 01:11 Injection.

Summary Friday h38: Ramp down and pre-cycle.

Powering from short circuit tests up to nominal

QUENCH BEHAVIOUR TEAM ACTIVITIES

A/N 26 16:00 Access finished problem with the BLM test. one crate is failing the beam permit test. Fixed. Access required in sector 78 for QPS to fix a.

Last 24 hours RQ5.L1 RQ4.L1 RF trip Line4B LHC status.

LHC Status Su Morning 17-April R. Assmann, B. Holzer et al

Sinusoidal response of circuits

Mon 22/8 – Tue 23/8 00:07 stable beams #2040. Initial luminosities: 2.1x1033 cm-2s-1 18:00 Programmed dump. End of physics #2040. ~83 pb-1 in ~18 hours.

Tuesday 28th September Fill 1375 ongoing 09:00 Move in Roman Pots

RADIATION induced failures in LHC 28th June 2011

Programme for Saturday 10 July

Sunday/Monday & :30 Stable beams. Fill #1851.

Tuesday 17/5 10: TeV - colliding. Start roman pot alignment ...

Monday 8th December Morning used for RF work (IP z, injection), damper noise checks. Stable beams period with LHCb spectrometer OFF – lost beam after.

Fill 1743 Peak luminosity ~6.7 e32 Integratated lumi ~20 pb-1

Thu 04:00 Fill #2729 Stable Beams. Initial lumi 6.5e33 cm-2 s-1.

Saturday 24 September 2011.

Monday 26th September 7:30 Beam dump, QSP on RQX.R1, lost cryo in ITR1, 91 pb-1. Cryo recovery, needed about 1.5 h. Setting of TI2 collimators to 5 sigma.

Friday 15th February - morning

Friday h55 Stable beams. Fill #1841. Lumi ~1.2e33.

Wednesday 6.10 Morning: Quench test at 450 GeV

Other arguments to train two sectors to 7 TeV

Sinusoidal response of circuits

Presentation transcript:

nQPS trips due to EMC transients 30/06/20111ZCh, TE-MPE-TM Z.Charifoulline - # nQPS.BS signals in A12 & A34 # statistics over all sectors – how many sectors would be tripped? - EMC Transient example in P8 - Brief statistics for nQPS trips 2011 (hyperlinks to logbooks) - Current status of BS thresholds for long quad buses (TS#3)

ev_ _RQ10.R1 ev_ _RQ8.L1 ev_ _RD2.R1 ev_ _RQ8.R1 ev_ _RQ10.L1 ev_ _RQ6.R1 ev_ _RD2.L1 ev_ _RQ9.L1 ev_ _RQ4.R1 # ev_ _RQ8.L5 ev_ _RQ10.R5 ev_ _RQ10.L2 ev_ _RQ10.L4 ev_ _RQ10.R4 ev_ _RQ10.R2 ev_ _RQ10.L1 ev_ _RQ10.L6 ev_ _RQ10.L5 ev_ _RQ8.R4 ev_ _RQ8.L4 ev_ _RQ9.L1 ev_ _RQ9.R2 # ev_ _RQ10.L4 # ev_ _RQ10.L8 ev_ _RQ10.R5 ev_ _RQ8.R6 ev_ _RQ9.L6 # ev_ _RQ10.R8 ev_ _RQ10.L1 ev_ _RQ9.L8 ev_ _RQ9.L1 ev_ _RQ9.R8 # ev_ _RQ10.L2 ev_ _RQ10.L4 ev_ _RQ10.R4 ev_ _RQ10.R2 ev_ _RQ10.L5 ev_ _RQ9.R2 #22/06/ h17: P1 LHC #22/06/ h24: P1,P2,P4,P5 #22/06/ h55: P5,P6,P8 #22/06/ h57: P1,P8 #22/06/ h17: P2,P4,P5 #22/06/ h45: P4 22/06/2011 Thunderstorm in LHC tunnel 30/06/20112ZCh, TE-MPE-TM LHCOP 16h24: Power cut global in the 400 V, all kickers off. LHCOP 17h25: We lost again 4 sectors

22/06/2011 Thunderstorm: Sector A12 B33R1_RQF B31R1_RQD B27R1_RQF B25R1_RQF B15R1_RQD … B32L2_RQF B30L2_RQF B28L2_RQD B24L2_RQD B22R1_RQD B34R1_RQD A12.RQD/RQF No significant EMC effects in the first shot. Why? #22/06/ h24: P1,P2,P4,P5 - more than 12 channels above 500uV; - EMC effect is stronger in the middle of the arc; - EE switches were already open; Most likely it would trip the circuit. 30/06/20113ZCh, TE-MPE-TM 500uV

22/06/2011 Thunderstorm: Sector A34 B34R3_RQD B28L4_RQD B26R3_RQF B30R3_RQF B12R3_RQF … B31L4_RQF B19L4_RQF B21L4_RQD B25L4_RQD B15R3_RQD B17R3_RQD A34.RQD/RQF No significant EMC effects in the first shot. #22/06/ h24: P1,P2,P4,P5 - more than 12 channels above 500uV; - EMC effect is more uniform over the arc; - EE switches were closed; Most likely it would trip the circuit. 30/06/20114ZCh, TE-MPE-TM U_RES max 500uV

22/06/2011 Thunderstorm: overall view & conclusion #22/06/ h24 #22/06/ h55 U_RES max Thunderstorm => 400V Circuit Breakers But no detailed information found  Many sectors would be tripped due to the huge spikes on RQD/RQF-circuits even if IPQs will be stable, but without firing the sleeping quench heaters! Relatively easy solution is to increase the U_RES threshold to 1mV What else? It might be more sophisticated BS-board firmware with Jens experience in the Thermal Amplifier Project (mBS-board). 30/06/20115ZCh, TE-MPE-TM

30/06/2011ZCh, TE-MPE-TM6 LHCOP 16/06/ :49: Global Post Mortem Event Confirmation Dump Classification: Other Operator / Comment: stefano / Trip of the main quads in S81 - MP3 investigating the source of the trip No information found from SPS&Injection team – ALL OK. UFO or Tramp AUG? A81: 98 -> 99 A78.RQ A81.RQ 500uV 600uV Last nQPS.BS trip at Point8, 16/06/2011 “1 fb -1 ”

30/06/2011ZCh, TE-MPE-TM7 Time Stamp & WhereComments ****Thunderstorm => 400V Breaker A81.RQD/RQF A81.RQD/RQF (B11R8)Glitch in Point8, but it is not known why and where?98 => 99 ( ) A67.RQD/RQF A67.RQD/RQF (B15L7)Trip on RQF due to nQPS (Same as yesterday evening). Proposal to increase the threshold to 600 uV and postpone investigation… DQQBS board #9 B15L7 successfully exchanged by Joaquim --> ok. Problem solved A78.RQD/RQF A78.RQD/RQF (B11L8) Circuit tripped always at the end of a pre-cycle at around 1400A. This happened only if all the circuits are pre-cycled together. … We're just pretty close to the threshold. Further tests are required to find out which circuits causes the xtalk on the B11L8_8 card. JS (precyles&ramps view)view 98=> /17 A81.RQD/RQFBS boards tripped during SPS magnet tests at 11:39:11 in RQ81 (overall sector view)overall sector view A81.RQD/RQF A81.RQD/RQF (B11R8)Signal B11R8_4 passed the threshold of 500uV. All the nQPS crates signals pick up a noise which is bigger than usual (with an amplitude of about 100uV and a frequency of about 40mHz or 25 seconds) Probably there is some emf coupling with the SPS. See also the event on 30 march 2010 at 10h22!!! AW30 march => 99 ??? A12.RB A12.RB (B9L2)Replacement of the two BS boards of B9.L2 slots 3 and 4 (exceeded 500uV earlier this morning. 98??? 2011 nQPS.BS Trip Statistics from logbooks Not so many cases, but not negligible. All in Point 8 so far. Increasing the BS thresholds for all long buses and checking it by power cycling of the concerned units might help in many cases. Now it is very right moment to do so: TS#3.

30/06/2011ZCh, TE-MPE-TM8 A67.B15L7_RQD(A) A78.B11L8_RQD(A) A78.B11L8_RQF(A) A81.B11R8_RQD(B) A81.B11R8_RQF(B) A81.B11L1_RQD(A) A81.B11L1_RQF(A) Current status of BS-thresholds for the RQ long buses (30/06/2011)

30/06/2011ZCh, TE-MPE-TM9 PointCrateBus Bar SegmentMagnet 1Magnet 2splNumthrs Athrs B 1 DQAMGS.B11R13DCQDE.11R1.RMQ.12R1.B1 MQ.11R1.B23298 DQAMGS.B11R14DCQFE.11R1.LMQ.12R1.B2 MQ.11R1.B13298 DQAMGS.B10L23DCQDD.7L2.LMQ.11L2.B2 DFLAS.7L DQAMGS.B10L24DCQFD.7L2.RMQ.11L2.B1 DFLAS.7L DQAMGS.B11L23DCQDQ.12L2.RDFLAS.7L2.1 MQ.12L2.B12098 DQAMGS.B11L24DCQFQ.12L2.LDFLAS.7L2.3 MQ.12L2.B DQAMGS.B11R23DCQDB.C12R2.RDFLAS.7R2.1 MQ.12R2.B22098 DQAMGS.B11R24DCQFB.C12R2.LDFLAS.7R2.3 MQ.12R2.B12098 DQAMGS.B10R23DCQDD.7R2.LMQ.11R2.B1 DFLAS.7R DQAMGS.B10R24DCQFD.7R2.RMQ.11R2.B2 DFLAS.7R DQAMGS.B10L43DCQDD.7L4.RMQ.11L4.B2 DFLAS.7L DQAMGS.B10L44DCQFD.7L4.LMQ.11L4.B1 DFLAS.7L DQAMGS.B11L43DCQDQ.12L4.LDFLAS.7L4.2 MQ.12L4.B12098 DQAMGS.B11L44DCQFQ.12L4.RDFLAS.7L4.4 MQ.12L4.B DQAMGS.B11R43DCQDB.C12R4.RDFLAS.7R4.1 MQ.12R4.B22098 DQAMGS.B11R44DCQFB.C12R4.LDFLAS.7R4.3 MQ.12R4.B12098 DQAMGS.B10R43DCQDD.7R4.LMQ.11R4.B1 DFLAS.7R DQAMGS.B10R44DCQFD.7R4.RMQ.11R4.B2 DFLAS.7R DQAMGS.B11L53DCQDQ.11L5.LMQ.12L5.B2 MQ.11L5.B13298 DQAMGS.B11L54DCQFQ.11L5.RMQ.12L5.B1 MQ.11L5.B DQAMGS.B11R53DCQDE.11R5.LMQ.12R5.B1 MQ.11R5.B23298 DQAMGS.B11R54DCQFE.11R5.RMQ.12R5.B2 MQ.11R5.B13298 DQAMGS.B10L63DCQDD.5L6.LMQ.11L6.B2 DFLAS.5L DQAMGS.B10L64DCQFD.5L6.RMQ.11L6.B1 DFLAS.5L DQAMGS.B11L63DCQDQ.12L6.RDFLAS.5L6.1 MQ.12L6.B12198 DQAMGS.B11L64DCQFQ.12L6.LDFLAS.5L6.3 MQ.12L6.B DQAMGS.B11R63DCQDB.C12R6.LDFLAS.5R6.2 MQ.12R6.B21998 DQAMGS.B11R64DCQFB.C12R6.RDFLAS.5R6.4 MQ.12R6.B11998 DQAMGS.B10R63DCQDD.5R6.RMQ.11R6.B1 DFLAS.5R DQAMGS.B10R64DCQFD.5R6.LMQ.11R6.B2 DFLAS.5R DQAMGS.B10L83DCQDD.7L8.LMQ.11L8.B2 DFLAS.7L DQAMGS.B10L84DCQFD.7L8.RMQ.11L8.B1 DFLAS.7L DQAMGS.B11L83DCQDQ.12L8.RDFLAS.7L8.1 MQ.12L8.B12099 DQAMGS.B11L84DCQFQ.12L8.LDFLAS.7L8.3 MQ.12L8.B DQAMGS.B11R83DCQDB.C12R8.RDFLAS.7R8.1 MQ.12R8.B22099 DQAMGS.B11R84DCQFB.C12R8.LDFLAS.7R8.3 MQ.12R8.B12099 DQAMGS.B10R83DCQFD.7R8.RMQ.11R8.B2 DFLAS.7R DQAMGS.B10R84DCQDD.7R8.LMQ.11R8.B1 DFLAS.7R DQAMGS.B11L13DCQDQ.11L1.LMQ.12L1.B2 MQ.11L1.B13299 DQAMGS.B11L14DCQFQ.11L1.RMQ.12L1.B1 MQ.11L1.B Current status of BS-thresholds for the RQ long buses (30/06/2011) A81.B11R8_RQD(B) A81.B11R8_RQF(B) A81.B11L1_RQD(A) A81.B11L1_RQF(A) A78.B11L8_RQD(A) A78.B11L8_RQF(A)

30/06/2011ZCh, TE-MPE-TM10 Thanks!