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Nov 11, 2023 •324 likes •474 views

C M S L H C R E P O R T C M S A N D L H C R E P O R T A L L E X P E R I M E N T E R S M E E T I N G F E R M I L A B J U LY 9 , 2 0 1 8 Javier Duarte Fermilab 1 L H C & C M S S C H E D U L E LHC performing a complex program

  1. C M S L H C R E P O R T C M S A N D L H C R E P O R T A L L E X P E R I M E N T E R S M E E T I N G F E R M I L A B J U LY 9 , 2 0 1 8 Javier Duarte Fermilab � 1

  2. L H C & C M S S C H E D U L E • LHC performing a complex program before going back to high luminosity production Program Status � 3b, 150b, 600b DONE to 1200b DONE (4h SB) • Complete 90m Beta* run 2460b DONE VdM DONE • 100ns phase done, now at 50ns ALICE/LHCb 70b VdM DONE (went to extra ATLAS/CMS 140b time - 22h!…) • Planned to finish Saturday July 7 2460b “Sandwich” postponed � 90m 100ns >0.5/pb DONE 90m 50ns In progress • Return to Physics 2556b • 4 long fills where ATLAS will run at low CERN Accelerators and Schedules β PU, and CMS will too in the last 5h We are here C ollisions with F irst S table 1200 bunches Apr May J une J uly Aug beams Wk 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Mo E aster 2 9 16 23 30 7 14 Whitsun 21 28 4 11 18 25 S crubbing 2 9 16 23 30 β *= 90 m run Tu 1st May TS 1 We MD 2 Interleaved R ecommissioning Th Ascension commissioning & with beam MD 1 intensity ramp up β *= 90 m F r run S a VdM program S u Javier Duarte Fermilab 2 � β

  3. L H C S TAT U S • Despite slower restart after MD1 and TS1, still ahead of schedule • Main events: • Several LHC issues in recovery after TS1 • Alice water leak • Experiments (Alice, Atlas) cooling faults • CMS Fire Alarms � lays � � � � � Javier Duarte Fermilab 3 �

  4. C M S S TAT U S • 94% data-taking efficiency (~19/fb certified for physics) � s = 13 TeV � s = 13 TeV C0S ,ntegrated LumLnoVLty, SS, 2018, C0S 3eDk LuPLnoVLty 3er DDy, SS, 2018, DDtD LncOuded fUoP 2018-04-17 10:54 to 2018-07-06 11:00 87C DDtD LncOuded fUoP 2018-04-17 10:54 to 2018-07-06 11:00 87C 25 25 30 30 3eDk DelLveUed LuPLnosLty ( Hz / nb ) 7RtDl IntHJUDtHd LumLnRsLty ( fb − 1 ) LHC DHlLvHUHd: 23.74 fb − 1 0Dx. Lnst. luPL.: 20.87 Hz / nb C06 5HcRUdHd: 22.43 fb − 1 25 25 20 20 C06 PUeOLPLnDUy 2nOLne LuPLnosLty C06 PUeOLPLnDUy 2nOLne LuPLnosLty 20 20 15 15 15 15 10 10 10 10 5 5 5 5 0 0 0 0 y y y y n n n n n y y y y n n n n n U U U U S S p p D D D D u u u u u D D D D u u u u u A A A A 0 0 0 0 J J J J J 0 0 0 0 J J J J J 2 9 6 3 0 2 9 6 3 0 1 8 1 8 5 2 9 6 5 2 9 6 1 2 3 1 2 3 2 2 2 2 1 1 2 1 1 2 DDtH (87C) DDte (87C) CMS Luminosity Public Results Javier Duarte Fermilab � 4

  5. C M S D E T E C T O R S TAT U S • 95-99% detector active fractions • Saturday June 30: After (fake) fire alarm brought down all parts of CMS detector during the ATLAS/CMS VdM scans, two sectors of HCAL Endcap Minus (HEM15 Tracker and HEM16) could no longer be ECAL operated (LV power supply unit replaced, but problem persisted) HCAL • “Technical Incident Panel” is investigating, but current understanding is that there is little hope to recover these two sectors (a Muon 
 System total of Δ Φ = 40° on the minus side of HE) until the HCAL Endcap Minus 95 99 can be opened • Impact on physics also being CMS WGM365 Report understood Javier Duarte Fermilab 5 �

  6. P H A S E 2 U P G R A D E • Calendar of CMS International Reviews • MIP Timing Detector, Jun. 21: https://indico.cern.ch/event/ 735160/ • Barrel Calorimeter, Jul. 2: https://indico.cern.ch/event/ 735166/ • Muon systems, week of Sep. 24 • Tracker, week of Oct. 8 or 15 • L1-Trigger and DAQ/HLT, 
 week of Nov. 5 or Nov. 12 • Calorimeter Endcap, 
 week of Jan, 21 or 28 Javier Duarte Fermilab � 6

  7. P H Y S I C S � ICHEP is ongoing � CMS is presenting over 25 new results � Summary of ICHEP results was sent to CERN communication office, expected to be issued on Monday � Web page with summary of CMS results ready, will go public today at 4PM: http://cms.cern/news/ICHEP-2018 � http://cms.cern/news/ICHEP-2018 Javier Duarte Fermilab � 7

  8. C M S L H C R E P O R T B A C K U P Javier Duarte Fermilab

  9. C A S T O R � Decided in a cross coordination meeting to reinstall CASTOR before the HI run � A very forward calorimeter with acceptance - 6.6 < η < -5.2 � Need some work to recommission the detector and DAQ, group committed � Baseline is to use it with the nominal HI trigger, but more It is the last opportunity to use refined options are under study CASTOR, in LS2 we will replace the � If compatible with the HI beampipe and it will not be program compatible anymore Javier Duarte Fermilab 9 �

  10. VA N D E R M E E R S C A N � � • VdM program completed, despite the power cut in CMS VdM setup (incl ALICE) 90m loss maps ALICE+LHCb ATLAS + CMS_1 CMS_2 VdM VdM VdM Javier Duarte Fermilab 10 �

  11. C T- P P S B E TA * = 9 0 M R U N • Run dedicated to low mass diffraction physics: low missing PT searches, glue-balls • CMS-TOTEM collected ~0.4 pb -1 of low-PU ( μ =0.06-0.13) data at 13 TeV in 2015 • Preparation in a series of joint bi-weekly CMS - TOTEM meetings. • Last one was on Wed 20th: https://indico.cern.ch/event/731660/ • Hardware :Digitizer boards for the timing arrived and tested, installed during TS1 • TOTEM trigger tested during the 90m alignment run last night with three HF thresholds. • HLT Menu using paths defined with Cluster counting or HLT track cuts will be tested during 600b ramp up. • Offline: software release (CMSSW_10_1_7 ) to support the 90m run activities has been validated and deployed at Tier0 on June 20th. • RP alignment for 90m beta* last night • L1 trigger menu LowPU/90-m with 3 different HF thresholds; ~1h data taking with quiet beam. TOTEM team starting the analysis. More news during the Run Coordination Plenary session on Wed. • 90m beta* run starting from June 29th (in the current schedule…) ~10pb -1 expected in 5 days of physics runs Javier Duarte Fermilab � 11

  12. L O W P U R U N Low PU Run • Data taking after 90 beta* run and during VdM scan in other experiments. • CMS has a programme which would require ~25pb -1 of PU~ 1 data for HIN and FSQ studies • All physics requests collected in: https://docs.google.com/document/d/ 1nsHt3V-fYAj236wL_AZYxtp44eaiLMNPIjds7Vy675g/edit • CMS Would like to take this data ideally in the last ~ 5 hours of each of the 4 fills requested by ATLAS. • We will collect data at nominal luminosity until we will not request beam separation. • HLT Menu will be tested during 600b ramp up. Heavy Ion Run (Nov) • Continuing preparation in all fronts: trigger/DAQ etc.. Javier Duarte Fermilab � 12

  13. D ATA PA R K I N G F O R B - P H Y S I C S Collect an un-biased sample for B-physics to be reconstructed during the shutdown Started with tests enabling parking at <10 34 Hz/cm 2 (May 9th). Since May 11th starting at <1.4 * 10 34 Hz/cm 2 and since June 6th starting at < 1.6 * 10 34 Hz/cm 2 —> Until Jun 19th recorded ~3B of events. More information at: https://indico.cern.ch/event/738079/ The total L1A rate (optimised for 100 kHz) is below 80 kHz for the highest luminosity seen so far (2.05* 10 34 ). It is also much more linear with pile-up than what we had in 2017. Deadtime has increased with parking ~0.5% due to the increased L1 rate 17 Javier Duarte Fermilab � 13

  14. S O F T WA R E A N D C O M P U T I N G • System full as usual. Majority of resources given to different � campaigns on daily basis, following priorities Javier Duarte Fermilab � 14

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