Monday 30.05. 01:00 Injection for physics fill #1816 02:00 Stable beams fill #1816, luminosity ~1.2x1033 cm-2s-1 11:08 Beams dumped. QPS trigger on detector.

Slides:

Advertisements

Similar presentations

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.

Advertisements

Mo morning set up 228 bunch injection (36 bunch trains), ramp, squeeze, collisions h luminosity (depending on experiments) ATLAS length scale calibration.

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

PROFIBUS controller problem (SEU) on cryo valve on DFBMH (600 A circuit RQ6.L7B1/2). Loss of cryo maintain ==> Beam dump. End of fill #1975 after ~2.5.

Wednesday 12 th September Pumping, removal of vacuum equipment from tunnel in the morning TOTEM & ALFA, RP movement tests: OK 11:50 pre-cycle started,

21/05/2012LHC 8:30 meeting Overview Week 20 Injectors, LHCb polarity, Beam-Beam Coordinators: Bernhard Holzer, Jan Uythoven.

5/11/2012LHC 8:30 meeting Summary of Week 44 Coordination: Mike Lamont & Jan Uythoven.

Monday 29 October 08:48 V/dM scan CMS end of fill #3236. Check of “fast scan”. 10:06 V/dM scan finished, start of RF studies, reducing RF voltage. 11:10.

LHC SUMMARY – WEEK 36 Coordination: Mike Lamont & Bernhard Holzer LHC weekly summary 1.

:00: Prepared new fill B1: Q X =0.293, Q Y =0.269; lifetime = 25h ✔ B2: Q X =0.297, Q Y =0.267; lifetime = 5h ✗ Strong 50Hz and 100hz lines.

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

Monday h00: End of fill #1640: 3.7 pb h14: RB S12 and S23 tripped before loading rampdown table, active filter. MPE piquet. Fip_Com_Lost.

LHC progress Report LHCC Wednesday 23 rd March 2011.

Nominal intensity bunches ● First ramp with nominal intensity bunches suffered from an instability appearing around 1.8 TeV. ● Nominal intensity bunches.

Tuesday 17 th April 04:00 Prepare second fill for v/d Meer scans. 06:22 Stable beams, v/d Meer scans for Alice and LHCb. 13:20 End v/d Meer scans.Dump.

Saturday 7ish – refill for RP set-up 9:15 Going for Roman pot alignment. Stefano is coming. 12:10 TOTEM: Alignment of horizontal RPs B2 finished, short.

LHC Progress Friday 30 th October 2015 Coordination Week 44: Massimo Giovannozzi, Wolfgang Hofle, Jorg Wenninger.

00:15: Stable beams fill 1883, 1.1E33 cm-2s-1.  Seems the 144 bunches beam 1 doe not fit properly on the injection kicker waveform. Systematically the.

Monday h34: beam (1020b) lost after 10 Hz RF trim. Fill h56: XPOC to be reset by expert. 08h18: Masked QPS_STATE SIS interlocks for RB.A12.

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.

Saturday ● 06:00: Physics fill from the night shift ● 15:00: End stable beam mode: – problems with incorporation of settings for the squeeze ● 16:40:

Tuesday 24 th July - morning 10:15 Operator dump of fill 2873  Initial luminosity: 5.83e33 cm-2s-1  12 hours stable beams  151 pb-1 delivered  Initial.

Thursday 20 th April 01:53 RCBV17.R7B2 tripped as happened few days ago: SIS intercepted. 05:54 Stable beams, 1380b, still RF problems B1, abort gap cleaning.

04h36: Cryo problem in arc 81. Access. 09h14: Injection.  TI8 injection collimator setup.  Testing new sequence.  New version of vacuum application.

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.

Monday 19 th March 07:33 Lost (another) beam in the squeeze, beyond 2 m, B2 hits 1/3 resonance. 08:30 Start (another) ramp  Try to correct coupling and.

Tuesday 7/7 & Night 8/7 06:53 Beam lost due to RF problem, understood  08:30 Access –VIP, Experiments, QPS, EPC, ABT, RF, BI, …. 15:15 Access over, expert.

Tuesday 7 th August - morning 07:10 Reinjection after loss of fill 2920 to UFO near ALICE  26 pb -1 in 1h16m; peak lumi 6.4e33 cm -2 s -1 08:10 dump at.

Tue 23/8 – Wed 24/8 09:00 Start 90 m optics run – Preparation and verification of the collimation functions – Re-generation of functions for Transverse.

Ion Commissioning: Thursday & Friday

MD Planning Fri – Sat (26. – 27.8.)

LHC Status Tue Morning 22-Aug

Wednesday 8.9 External crossing angles:

-9:00: Test IP transverse adjustment (CMS) and optics verification.

Wednesday September 14th

Monday 14th March Second fill with pilot + 3 nominal bunches

LHC Status Wed Morning 13-April R. Assmann, B. Holzer et al

Wednesday 5th September - morning

Week 46 Week 46: Machine coordinators: Roger Bailey – Gianluigi Arduini Main aims of the week: Stable beams with ions Scheduled stop for ion source refill.

Saturday 12:00 Fill 1992 in stable beams.

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.

Friday 31st August & night

Wednesday 8th August & night

LHC Status Sun Morning 20-Mai

Chromaticity can make a difference…

Friday :00 machine setup for luminosity run. Better b-to-b stability from injectors. 01:58 stable run with 228 bunches 11:00 luminosity leveling.

04-05/08/2010 End of physics at ~11:00 after 18.5 hours ~120 nb-1.

Friday morning 10:30 Optics measurements and corrections.

Thursday :00: Physics fill from the night shift

Finally.... We had to wait a long time.... We had many problems....

Friday Morning 7:30 injection for fill 2908

Friday AM Some oscillations of the cryo conditions in MSR8 perturbed the setup for injection. RF frequency interlock fixed – required a reset of RF controls.

Tuesday Access for RF & QPS (others in the shadow) until ~18:00.

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

Aims for the week Recover from technical stop and precycle at 10A/s

Monday 14:00 beam dump Access:

Thursday Fill 1364 (24 bunch) dumped at 07h

Saturday Nov Stop proton operation. Switch back to ions

Tue/Wed 12/ :00 Probe beam back again

Monday morning 09:40 Dump fill 2838, integrated ~130 pb-1.

LHC Status Tue Morning 22-Aug

Wednesday h10: Programmed dump. 07h54: Injection. 200b.

Friday 14th September 03:15 Beta* at 1 km. Optics measurements, see yesterday. 07:00 Dump. 08:00 Refill with 3 nominal bunches for high beta. 11:15 Beams.

Saturday 12 March Morning: problem on RSD1.A12B2 – flow rate problem on the cooling water for the converter. 14:00: Loss map -500 Hz (positive energy offset)

Saturday 24 September 2011.

Coordination: Eva Barbara Holzer, Mike Lamont

Thursday 20th July - morning

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

Saturday 28th 08:17 Fill #1812: Stable beams, peak luminosity ~1.1x1033 cm-2s-1 19:00 Go to adjust for RF-checks; Record fill lumi of 31.7 pb-1 for CMS.

Wed 12/10 09:30 – 10:30 Ramp down of ALICE solenoid to 50% nominal field on request of ALICE. Increase of the vacuum (e-cloud in this area that has not.

Presentation transcript:

Monday :00 Injection for physics fill # :00 Stable beams fill #1816, luminosity ~1.2x1033 cm-2s-1 11:08 Beams dumped. QPS trigger on detector of RCBXH2.L1.  Circuit detector stalled prior to the event (cause no clear but radiation not excluded even likely) and automatically RESET by watchdog.  The trip occurred during the RESET. 12:01 – 13:17 CMS access. 13:43 Injection of 2 nominal bunches per beam. 15:39 Beams in collisions, optics squeezed, RP at proposed physics settings. 15:43 Beams dumped when switching off the RF for asynchronous dump test. New SIS interlock on RF voltage was not masked. LHC 8:30 meeting 31/05/2011

Monday :31 Injection of probe beam. 16:53 No further beam from PS.  Cannot do asynchronous dump test with probe beam (orbit effects).  Parasitic MD to approach integer resonance. Reached 0.03… 18:49 Beam back from PS. 19:32 Ramp with 2 nominal bunches. 20:10 Adjust mode. Squeeze done. 20:20 Beams dump FMCM: electrical glitch due to storm. 20:40 Another glitch: we tripped the RD34.LR3 21:41 Injection. 22:07 Ramp 22:58 Collision, squeeze done, RP’s in, RF off for debunching. 23:10 Asynchronous dump test. LHC 8:30 meeting 31/05/2011

Parasitic MD: Integer Resonance LHC 8:30 meeting 31/05/2011 Beam Intensity QH QV  Integer resonance is very narrow!

Parasitic MD: Integer Resonance LHC 8:30 meeting 31/05/2011

Parasitic MD: Integer Resonance LHC 8:30 meeting 31/05/2011

Abort Gap Population LHC 8:30 meeting 31/05/2011

Losses: To be analyzed in detail… LHC 8:30 meeting 31/05/2011

Tuesday :47 Injection 02:25 Emittance blowup. 450 GeV beams in LHC dumped. Booster optimizing. 03:36 Injection 1092b. 05:55 Stable beams # :22 Beam dump. UFO. 07:16 Injection for physics fill, 1092b. LHC 8:30 meeting 31/05/2011

Emittance Blowup B1/B2 V LHC 8:30 meeting 31/05/2011 To be understood… Real 100% emittance growth or instrumental effect?

Physics 1092b LHC 8:30 meeting 31/05/2011

UFO: Q5 or IR2 injection kicker? LHC 8:30 meeting 31/05/2011

Incoming LHC 8:30 meeting 12 31/05/2011 Tuesday amPhysics with 1092 bunches per beam In shadow: SPS intervention End of fill: Move in physics debris collimators (TCL) Tuesday pmTest of 144b injection? Injectors being set up, then decide... Tuesday night – Wednesday Luminosity production... Goal of the week: Produce > 250 pb-1