A. Gurtu Tata Institute of Fundamental Research, Mumbai

Report to the Collaboration &Some News from June 07 CMS

Week

India-CMS Collaboration Meeting BARC, Mumbai20-21 July 2007

A. Gurtu

Tata Institute of Fundamental Research, Mumbai

A. Gurtu: "Report to the Collaboration", India-CMS Collaboration Meeting, PU, 5-6 April 2007

Report to the Collaboration -happenings in India-CMS


HO installation (SRD later)

• HO fully installed in YB+2, YB+1, YB0 and lowered by end-Feb 07.

• Work on vertical sectors that had to be done after lowering also carried out

• By end-June, YB-1 & YB-2 also “almost” installed in CMS detector on the surface. YB-2: One RBX remains to be installed.

• YB-1: Test/commissioning of individual RBX’s done.• Next: Mount last RBX on YB-2; test each RBX.• Lowering of YB-2, YB-2: now in October 07.


HO Commissioning

• Commissioning of YB+2 was already done in MTCC

• YB+1, YB0, YB-1, YB-2 global commissioning to be done. YB0 start was expected in mid-July, but

- overall schedule may slip

- for HO, some cables are needed, which are expected to arrive only by end-July.

• Will go along with the evolving scenario of CMS & HO installation in accordance with the constraints.


Skuja: HCAL commissioning: Schedule for HF, HE and HO

• HF+

• Apr/May: completed

• HF- will be commissioned as soon as we get LV power!

• HO

• June: YB-1, YB-2 in SX5 hall

• July: HO on YB0 wheel

• August: YB+2, YB+1 (waiting for water cooling)

• HE

• June/July: start-up of YE+1 was delayed by lack of water cooling

• Nov/Dec: YE-1 (waiting to be lowered)


Skuja: Test Beam 2007

• Calibration of ZDC prior to its installation in the LHC beamline has been completed. However one of the ZDC modules was damaged in shipment and its copper matrix must be re-machined.

• Combined EE/HE measurements in July.

• SiPMT measurements in August • Lumi electronics verification in August (?)• Manpower crunch between commissioning needs and test

beam needs in summer of 2007 (TB mainly in July, while HB commissioning starts in August). We have a gaggle of students assigned to the test beam but very few supervisors. We invite our colleagues with Test Beam experience to help with the training/supervision of the students.


Skuja: HO Muon Trigger

• The official CMS position on the RPC trigger is that it does NOT require additional input from HO (as reported to the LHCC)

• Is there any further information on the HO participation in the MUON trigger


Skuja: Summary

• HF+ is installed and commissioned as a prototype of CMS UX detector shake down.

• Revisit HO trigger • HPD noise is not understood but is not a show-

stopper (HO z position altered)• HCAL DPG and DCS have an enormous task list• TB07 requires supervisors for students


Si-PSD status etc (AT later)• Will hear from ELD regarding status of sensor

fabrication & module production and testing.

• Si-PSD beam test in August

• In lieu of 300 kCHF electronics contribution by BARC, - provision of manpower for 70 kCHF (2 technical assts for 1 man-year equivalent, from 1 Aug 07.

- fabrication of OptoRx-12 module by ECIL, to be paid by BARC. Quotation sent to CERN by ECIL.


David Barney <[email protected]> Jul 19 (13 hours ago) to cadnps <[email protected]> cc Atul Gurtu <[email protected]>,[email protected],

Serge Reynaud <[email protected]>,Paschalis Vichoudis <[email protected]>,Walter Snoeys <[email protected]>

date Jul 19, 2007 6:21 PM subject RE: offer for OptoRx modules from ECIL, Hyd, India signed-by cern.ch mailed-by cern.ch

Dear Sir Many thanks for your offer for the production of "optoRx" modules dated June 29th. I apologise for the delay in replying to you. I believe that we can proceed with an eventual order, but before doing so we need to make some practical arrangements. Firstly I need to have a single technical contact person in India. This person should be directly responsible for overseeing the complete production and quality control etc. as well as liasing between BARC, ECIL and CERN. Please could you agree, with Prof Gurtu and the representatives from BARC, on a suitable person as soon as possible and inform me?


Secondly, before the full order is placed, we would like you to produce a small pre-series, perhaps of 2-3 complete pieces. If you agree to do this, please let me know when you could produce them so that we can arrange to send you the optical receivers. At that point I will also send the final production (Gerber) files to you. For the components (FPGA, all passive components etc.) please let me know how you would proceed for this pre-series of 2-3 pieces. i.e. would you procure all items yourself or do you wish to purchase them from CERN? I look forward to your response to the above issues, with kind regards, Dr. David BarneyCMS Preshower Coordinator


India-CMS Tier-2 at TIFR

• New hardware (~20% of total) is now functional. CPU’s, Storage, new UPS.

• Status later by PVD/PN. Integration into overall CMS-GRID, imminent, if not already operational.

• 34 Mbps 1:1 IPLC line operational between CDAC (Juhu) and Milano. Is alternately connected with TIFR or VECC.

• Enhancement of bandwidth to 622 Mbps and later to 1 Gbps or more planned.


India-CMS Tier-2 at TIFR: Upgrade to the pledged system by March 2008

• Indent for remaining hardware (~80% of total) now being worked out. CPU’s, Storage, 2nd UPS.

• Enhancement of AC and electrical power points and other infrastructure given to TIFR central services team.

• Quotations for AC enhancement received


RPC

• Many of materials ordered for the first 12 chambers have been delivered. Some expected soon. Miscellaneous materials from CERN next month: LMP.

• For cosmic muon trigger paddles, some large plastic scintillator sheets have been transported to BARC.

• PU students expected at BARC. • DAE has endorsed re-appropriation of spill-over

budget at TIFR (EHEP only) to Universities. DST response is awaited (DU to keep in contact).


Lamont: General LHC Schedule Engineering run originally foreseen at end 2007 now precluded

by delays in installation and equipment commissioning.

450 GeV operation now part of normal setting up procedure for beam commissioning to high-energy

General schedule being reassessed, accounting for inner triplet repairs and their impact on sector commissioning

All technical systems commissioned to 7 TeV operation, and machine closed April 2008

Beam commissioning starts May 2008

First collisions at 14 TeV com July 2008

Pilot run pushed to 156 bunches for reaching 1032 cm-

2s-1 by end 2008

No provision in success-oriented schedule for major mishaps, e.g. additional warm-up/cool-down of sector


Schedule

.

.

Operation testing of available sectors

12 23 34 45 56 67 78 81

Machine Checkout

Beam Commissioning to 7 TeV

Consolidatio

n

Interconnection of the continuous cryostat

Leak tests of the last sub-sectors

Inner Triplets repairs & interconnections

Global pressure test &Consolidation

Flushing

Cool-down

Warm up

Powering Tests


General co-ordination schedule - Milestones

Pressure test Cool-down Powering tests

Sector 12 27-28 Oct. 07 03 Dec. 07 25 Jan. 08 28 Jan.08 18 Apr.08

Sector 23 15 -16 Sep.07 05 Nov. 07 14 Dec.07 17 Dec. 07 21 Mar. 08

Sector 34 11-12 Aug. 07 17 Sep. 07 26 Oct. 07 29 Oct. 07 30 Nov. 07

03 Mar. 08 28 Mar. 08 31 Mar. 08 02 May 08

Sector 45 Done25 Jun. 07 14 Sep. 07 17 Sep. 07 30 Nov. 07

10 Mar. 08 04 Apr. 08 07 Apr. 08 02 May 08

Sector 56 18 - 19 Aug. 07 01 Oct. 07 09 Nov. 07 12 Nov. 0715 Feb.08

Sector 67 25-26 Sep. 07 22 Oct. 07 30 Nov. 07 03 Dec. 07 15 Feb.08

Sector 78 DoneDone Started 29 Jun. 07

08 Oct. 07 16 Nov. 07 19 Nov. 07 22 Feb. 08

Sector 81 16-17 Jun. 07 27 Aug. 07 09 Nov. 07 12 Nov. 07 22 Feb. 08


2008 LHC Accelerator schedule


2008 LHC Accelerator schedule


June 2007 CMS Week: Report from Jim Virdee & others


Communication from the DG

Can use for planning

Vacuum chambers installed and baked out by end of March 2008


ObjectivesCosmics Run, CMS Closed & Field ON - Mar 2008Initial* CMS detector ready to take cosmics data. Use to commission and

operate the detector and to prepare the Collaboration for data taking and analysis.

Working backwards by end-September 07 Tracker insertion has to have started and in December 07 be recording cosmics with Tracker/EB/HB etc. (Expt open)

• Including one EE, and pixels

14 TeV Collisions: Mid-2008Low luminosity CMS detector* commissioned and ready for efficient physics

data taking, the CMS Collaboration trained and ready for analysis of data at 14 TeV

* including both EEs, and pixels

Two parallel paths1. Detector Installation, Commissioning and Operation.2. Preparation for Analysis - Computing, Offline and Physics


LHC Machine 1: Descent of Last Dipole Apr08

See Talk by M. Lamont Wed afternoon


Progress in CMS since the last CMS Week

Very significant progress.

Main highlights are:

i) the first phase of the heavy lowering of the elements of the experiment into the underground cavern, including that of the heaviest element, the YB0, has been successfully completed.

ii) Commissioning of detectors installed in UX has started: HF+ has been commissioned, 4 DT sectors on YB0 ‘cosmics’ commissioned. First CMS Global run (Lvl-1 Trigger, HF, DAQ, data transfer to T1/T2) conducted end May.

iii) Commissioning of muon detectors still on the surface is proceeding well. ‘Cosmics” commissioning on DTs on YB-1 completed

iv) The critical path: installation of services on the YB0 is proceeding. Currently shows a delay of 1 mo. Investigating ways to mitigate.

v) Beam-pipe installation of -end (one of 3 parts) done, +end significant amount of work already carried out in January. Much has been learnt.


Progress in CMS since the last CMS Week

vi) Several million cosmic tracks have been recorded in the silicon strip tracker sitting inside the Tracker Support Tube since Mar 07.

Testing programme: several weeks at room temperature (DONE), 3 weeks at 0 °C (DONE), and now at -10 °C. The quality of the Tracker remains excellent. End surface commissioning mid-July.

vii) First half barrel ECAL installed at Point 5. Excellent quality (19 problem channels out of 30600). The last (of 36) barrel supermodule will be ready for installation early July. Barrel ECAL installation will be completed in July.

Endcap crystals production is proceeding well: over 3500 crystals now delivered(out of 14750 needed). The contract for the remaining 5500 endcap crystals is almost ready for signature - last EE crystal will be delivered end-Mar’08.

viii) DAQ and Trigger installation proceeding well.


Situation in Cavern after 1st Phase of Heavy Lowering (9Apr)


Magnet InstallationThe coil and all magnet systems transferred to the caverns: control, vacuum, cryogenics, powering and protection. Only re-connection work between subsystems is needed.

July-October: CommissioningJuly: Start commissioning (signal checks, vacuum control system, MCS and MSS.September: Ready for cool-downSept/Oct: Commission discharge & powering lines at 20kA, dump resistor.

Nov 07: Low current testing (about 400A) in the coil at 4.5K :power start, current regulation loop at low current, MSS and MCS.

March 08: Final commissioning of the magnet ( ~ 1 week)Progressive current ramps : 3kA, 7kA, 10kA, 14kA, 17.5kA, and nominal,One slow dump at 14kA.


Installation of Services on YB0The critical path, up to Tracker Insertion (in Sept), goes through the

installation of services on YB0+ end: Tracker patch panels (PP1s), & pipes installed and insulated, tracker cables being installed, then instal ECAL SMs in July, L0 scint, then ECAL/HCAL services- end: tracker patch panels &ECAL, L0 scint. installed, start tracker pipes installation this week, then tracker cabling, ECAL/HCAL services


Cosmics in the Tracker

•The Quality of the CMS Tracker is Excellent: • Dead or Noisy Strips < 3 / 1000 • Signal:Noise > 25:1 in Peak Readout Mode

Normal Strips 99.852 % (241 313 Strips)

Dead Strips 0.116 % (275 Strips)

Noisy Strips 0.032 % (76 Strips)

Example of Performance


1st Measurements of Efficiency of Tracker


EB- Installation Completed


ECAL EB Calibration

= 1.5%

0 in test beam

140 0/ crys 50 GeV e

Cosmics IntercalibrationCross-checked in beam


Endcap ECAL (EE)

Crystals Production: last crystals to be delivered end-Mar08

Assembly Progress 20 supercrystals mounted on Dee4 Bat 186 test beam29 s.c. assembled for Dee1 ( ~140/Dee), 1400 VPTs glued to crystalsCritical path components: HV boards, cooling bars, etc,Start mounting s.c. on Dee1 2nd week of July

Schedule is very tightIst Dee ready only at the end of 2007(Retrofit of motherborads in SMs has had an effect on progress in EE project.)

IssuesAdequate manpower (to speed up assembly and for management) Work on the back of the Dee is complicated (LV cabling & looming)ConcernsLimited experience so far. Much work still ahead. Will not know the exact time needed to get the last Dee until the first one has been completed and tested.


ECAL Preshower (ES) From AR: Schedule: Effort is needed for the preshower endcaps to be ready for installation in January and March 2008.

Concerns

No contingency

Many unknowns in the larger-scale assembly stages (ladders mounting on Dees etc.)

Some manpower concerns, particularly technicians, but:Significant help from CMA group recently

Additional resources found in CERN_DT groups for engineering/mechanics

Promises of manpower from collaborators for assembly and testing

CAEN LV supplies: sufficient modules to run one full endcap will not be available until ~ March 2008

Additional manpower will be needed.

NOTE: EE has higher priority than ES


End Nov: 1_2_0 - Released Dec 20Production of Physics Validation and HLT samples (80M)

Mid Feb: 1_2_3 - Released Feb 20Production of samples for 2007 Physics Studies (Spring07)

End Feb: 1_3_0 - Released March 28Goal: (Re-)Reconstruction of HLT and Physics Includes all algorithms needed for HLT exercise

End March: 1_4_0 - Released May 11, Prodn early JuneProduction of simulation samples for CSA07 (started June 4)Commissioning tests (Global Runs) in May and JuneMigration to & validation of Geant4 8.2, fixing geometry

overlapsBackward incompatible changes allowed: geometry model,

material budget, data formatsDQM / Event Filter software used for Filter Farm tests

Mid May: 1_5_0 - Release expected ~June 20Production of DIGI/RECO for CSA07 using Tier0New cycle of commissioning testsFramework changes : new plug-in manager, performance

optimisationsNew optimised reconstruction algorithms (input from PTF)New calibration and alignment (ALCARECO) producer

Jan

Feb

Mar

April

May

June

July

Aug

Sep

Oct

CSA07

Pre CSA0750Mevts/mth

HLT Exercise

MC Production

30Mevts/mth

Software Release Plan


Computing Overview and Concerns

Be ready to process and store CMS data at the startup of the LHC and give CMS users prompt (and easy) access to their datasets.

Commission the global computing infrastructure

Transition from commissioning to stable operations while supporting on-going physics studies and detector commissioning throughout the year, and

Making end-to-end tests of computing systems through participation in 2007 physics exercise (50 Mevts/mo), global data taking and cosmic runs and Computing Software Analysis challenge CSA07


Computing Overview and Concerns

Scale of CMS data transfers has increased significantly. T0-T1 channels have reached production operations in reliability and performance.

ConcernsFacilities - short of manpower. Need 2nd Level-2 convener full

time at CERN. User Support has to be re-enforced. Need 2nd convener.Mass storage - Storage Resource Manager, CASTOR Global connectivity between T1-T2 sites


Overall Plan & PhysicsGlobal priorities:

- Detector completion and commissioning

- Detector Performance

- Physics Objects

- Physics AnalysisPhysics-wise: focus on discovery

Standard Model studies: a necessary step

- Obviously, lots of good physics there as well

- But priority is in preparing for the main physics (new) that the LHC is conceived for

And, to do physics we also need to:- Complete and commission trigger

- Complete software

- Deploy computing model – and use it effectively


CMS Physics: Basic Program of Work• Up to Nov 2007• Concentrate on the physics that we can do with up to 1fb-1.

– Work in being done in order to chart out the “how” we will do this work, and to prepare methods, tools and people.

• Two major milestones, namely– HLT milestone (due now) - Goal CPU within a factor 2 of 40ms/evt. May 120 ms now < 50 ms/event, very large effort (see Thurs Plenary).– Completion of 1fb-1 exercise (Nov) - Approach the “1fb-1 goal” in a set of successive approximations (10, 100 and 1000 pb-1).

• From Dec 07 to May 08

• Prepare for the actual data. Goals:– Have all the datasets and streams defined– Have all of the HLT code in place– Have all the trigger monitoring system (code + people) in place– Have all the Monte Carlo events in place– Have all the data-analysis organization (code + people) in place– Have analyses (geared for 10 pb-1 & 100 pb-1) ready to absorb the data


CMS Schedule v36 has been prepared using the guidance from the DG.

Beam-pipe Closed and Baked-out by End March 2008.In v36 this point will be reached in mid-Feb 08.

Major Features of v36. • By end-September 07: Tracker insertion started• In December 07 ; recording cosmics with Tracker/EB/HB etc. (Expt

open) • By end-March 08, CMS is closed (including pixels and one ECAL

endcap) and taking cosmics with Field-ON

The main uses/consequences of the new guidance:- commission the entire detector/data flow and analysis systems with

cosmics data- reduce risks (e.g. by separating tracker cabling from beam-pipe

installation that was previously in parallel.

- Time to carry out untried operations (HF riser system in UX, pixel comm. sys..

- Open +end to allow commissioning to proceed- Repair/replace defective parts (RPC HV cables, DT fibres,…- Accommodate delay in YB0 services


June

July

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Tracker Inserted

Pre CSA07

MC Production for Startup

HLT Exercise

S/w Release 2_0_x(Production of startup MC samples)

Trigger/DAQ Ready Commissioning

1) Detector Installation, Commissioning & Operation

2) Preparation of Software, Computing & Physics Analysis

Barrel ECAL Inserted

CMS Cosmic Run Phase 2 (YB0)

Beam-pipe Closed and Baked-out

CMS Cosmic Run Phase 3 (-end,RE)

Tracker cabled & CommissionedLast Heavy Element Lowered

CMS Cosmic Run Phase 4 (4T)

CMS Cosmic Run (CCR) Phase 1 (+end)

≥ 2 EE Dees Installed, Pixels installed

2007 Physics Analyses Completed

CSA07

Test Magnet at low current

S/w Release 1_7 (CCR2, HLT Validation)

S/w Release 1_6 (CSA07, CCR1)

S/w Release 1_8 (Lessons of ‘07)


India-CMS: some physics studies

• S.S. Chauhan:

• Quark compositeness with diphoton final state at LHC: update.Venue: SUSY/BSM meeting, CERN (VRVS),

29 Sept 2006

• Search for quark compositeness with diphoton final state at LHC: update:Venue: SUSY/BSM meeting, CERN (VRVS),

13 Nov. 2006, 8 Jun 2007.

Pooja Gupta:

• Gamma + N jets generation in Alpgen meeting at CERN,

21 May 2007• Progress on Gamma + Jet

analysis in CMS Standard Model meeting at CERN,

23 June 2006• Gamma+Jet study at CMS in

CMS Physics meeting at CERN – through VRVS,

8 Dec 2006








Thank you

Documents

A. Gurtu Tata Institute of Fundamental Research, Mumbai