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Nov 11, 2023 324 likes •476 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

slide-1
SLIDE 1

Javier Duarte Fermilab

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

C M S A N D L H C R E P O R T

C M S L H C R E P O R T

  • 1
slide-2
SLIDE 2

Javier Duarte Fermilab

  • LHC performing a complex program before

going back to high luminosity production

  • Complete 90m Beta* run
  • 100ns phase done, now at 50ns
  • Planned to finish Saturday July 7
  • Return to Physics 2556b
  • 4 long fills where ATLAS will run at low

PU, and CMS will too in the last 5h

  • 2

L H C & C M S S C H E D U L E

Apr May J une

Wk

14 15 16 17 18 19 20 21 22 23 24 25 26

Mo

2 9 16 23 30 7 14 21 28 4 11 18 25

Tu We Th F r S a S u

TS 1 R ecommissioning with beam Ascension MD 1 Whitsun 1st May VdM program Interleaved commissioning & intensity ramp up S crubbing C

  • llisions with

1200 bunches F irst S table beams E aster β*= 90 m run β

J uly Aug

27 28 29 30 31

2 9 16 23 30 MD 2 β β*= 90 m run

We are here

  • to
  • Program

Status 3b, 150b, 600b DONE 1200b DONE (4h SB) 2460b DONE VdM ALICE/LHCb 70b DONE VdM ATLAS/CMS 140b DONE (went to extra time - 22h!…) 2460b “Sandwich” postponed 90m 100ns >0.5/pb DONE 90m 50ns In progress

CERN Accelerators and Schedules

slide-3
SLIDE 3

Javier Duarte Fermilab

  • 3

L H C S TAT U S

  • lays
  • 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
slide-4
SLIDE 4

Javier Duarte Fermilab

  • 94% data-taking efficiency (~19/fb certified for physics)
  • 4

C M S S TAT U S

2 1 A S U 2 8 A S U 5 D y 1 2 D y 1 9 D y 2 6 D y 2 J u n 9 J u n 1 6 J u n 2 3 J u n 3 J u n

DDtH (87C)

5 10 15 20 25

7RtDl IntHJUDtHd LumLnRsLty (fb−1 ) C06 PUeOLPLnDUy 2nOLne LuPLnosLty

DDtD LncOuded fUoP 2018-04-17 10:54 to 2018-07-06 11:00 87C LHC DHlLvHUHd: 23.74 fb−1 C06 5HcRUdHd: 22.43 fb−1 5 10 15 20 25

C0S ,ntegrated LumLnoVLty, SS, 2018,

s = 13 TeV

CMS Luminosity Public Results

2 1 A p U 2 8 A p U 5 D y 1 2 D y 1 9 D y 2 6 D y 2 J u n 9 J u n 1 6 J u n 2 3 J u n 3 J u n

DDte (87C)

5 10 15 20 25 30

3eDk DelLveUed LuPLnosLty (Hz/nb) C06 PUeOLPLnDUy 2nOLne LuPLnosLty

DDtD LncOuded fUoP 2018-04-17 10:54 to 2018-07-06 11:00 87C

  • 0Dx. Lnst. luPL.: 20.87 Hz/nb

5 10 15 20 25 30

C0S 3eDk LuPLnoVLty 3er DDy, SS, 2018,

s = 13 TeV

slide-5
SLIDE 5

Javier Duarte Fermilab

  • 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 and HEM16) could no longer be

  • perated (LV power supply unit

replaced, but problem persisted)

  • “Technical Incident Panel” is

investigating, but current understanding is that there is little hope to recover these two sectors (a total of ΔΦ = 40° on the minus side

  • f HE) until the HCAL Endcap Minus

can be opened

  • Impact on physics also being

understood

  • 5

C M S D E T E C T O R S TAT U S

95 99

Tracker ECAL HCAL

Muon
 System

CMS WGM365 Report

slide-6
SLIDE 6

Javier Duarte Fermilab

  • 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

  • 6

P H A S E 2 U P G R A D E

slide-7
SLIDE 7

Javier Duarte Fermilab

  • 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
  • 7

P H Y S I C S

http://cms.cern/news/ICHEP-2018

slide-8
SLIDE 8

Javier Duarte Fermilab

B A C K U P

C M S L H C R E P O R T

slide-9
SLIDE 9

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 refined options are under study

If compatible with the HI program

It is the last opportunity to use CASTOR, in LS2 we will replace the beampipe and it will not be compatible anymore

slide-10
SLIDE 10

Javier Duarte Fermilab

  • VdM program completed, despite the power cut in CMS
  • 10

VA N D E R M E E R S C A N

  • VdM

ATLAS + CMS_1 VdM ALICE+LHCb 90m loss maps VdM CMS_2 VdM setup (incl ALICE)

slide-11
SLIDE 11

Javier Duarte Fermilab

  • 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

  • 11

C T- P P S B E TA * = 9 0 M R U N

slide-12
SLIDE 12

Javier Duarte Fermilab

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..
  • 12

L O W P U R U N

slide-13
SLIDE 13

Javier Duarte Fermilab

17

Collect an un-biased sample for B-physics to be reconstructed during the shutdown Started with tests enabling parking at <1034 Hz/cm2 (May 9th). Since May 11th starting at <1.4 * 1034 Hz/cm2 and since June 6th starting at < 1.6 * 1034 Hz/cm2 —> 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* 1034). 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

  • 13

D ATA PA R K I N G F O R B - P H Y S I C S

slide-14
SLIDE 14

Javier Duarte Fermilab

  • System full as usual. Majority of resources given to different

campaigns on daily basis, following priorities

  • 14

S O F T WA R E A N D C O M P U T I N G