CERN/LHCC 99-25

LHCC 41

19 July 1999



 
 

LARGE HADRON COLLIDER COMMITTEE

Minutes of the fourty-first meeting held on

Thursday, 8 July 1999


 



OPEN SESSION :

1. ALICE Inner Tracking System TDR (LHCC 99-12): P. Giubellino, F. Antinori,
    A. Vacchi, P. Kuijer
 
 

CLOSED SESSION :
 

Present: J. Carr, R. Cashmore, M. Delfino, H. Dijkstra*, J. Engelen (Chairman), A. Ereditato, B. Foster, G. Goggi*, U. Heinz*, M. Kasemann, L. Maiani*, R. Kephart, J. Lee-Franzini, A. Read, G. Rolandi, A. Rostovtsev, P. Roudeau, T. Ruf, H. Schellman, D. Schinzel* (representing G. Goggi), E. Tsesmelis (Secretary), G. Zech.
*) Part time

  Apologies: B. Adeva, G. Altarelli, H. Kolanoski, S. Komamiya, J. May, M. Mazzucato, K. Potter, D. M. Sendall, P. Sharp
 
 
1. MATTERS ARISING

The minutes of the fourtieth LHCC meeting (LHCC 99-17 / LHCC 40) were approved without amendment.

The Chairman announced that W. Bartel has provided a cost evaluation of the ALICE PHOS and ZDC detectors, the conclusions of which show that the cost estimates reported in the respective TDRs are considered to be reasonable.
 

2. REPORT FROM THE ALICE REFEREES

The Committee heard a report from the ALICE referees, concentrating on the review of the TRD addendum to the ALICE Technical Proposal.

The referees, with H. Dijkstra as consultant, also reported on their preliminary reactions to the Technical Design Report for the ITS detector. Following further questions and discussions, the referees will make a full report at the next meeting of the LHCC.

The referees also reviewed the schedule for the ALICE TDRs and reported on the status of the TPC efficiency studies.
 

3. STATUS OF THE LHC PROJECT

The Director General gave a brief report on the status of the LHC project. He reported steady progress on the LHC machine and experiments, as also had been presented to the recent meetings of the SPC and the Council. The first contracts for the dipole cold mass have been accepted by the FC, and the call for tender for the complete set will follow the completion of the first phase. The Director General also summarised recent visits to Canada and China, in particular in view of their participation to the LHC project.
 

4. REPORT FROM THE ATLAS REFEREES

The Committee heard a report from the ATLAS referees, concentrating on the review of the Detector and Physics Performance Technical Design Report. The TDR documents the expected overall detector performance and physics potential of ATLAS. The TDR represents a thorough approach to the rich and diverse physics programme of ATLAS at the LHC. The Committee is impressed by the quality of the work presented in the TDR and congratulates the collaboration.

The referees also reported on the new appointments within the collaboration and on the revised milestone list which has been received by the LHCC. The referees also discussed the progress of the ATLAS sub-systems together with the status of the Production Readiness Reviews. It was also noted that ATLAS is performing studies for the measurement of luminosity which will lead to a proposal being submitted to the LHCC.
 

5. REPORT FROM THE CMS REFEREES

The Committee heard a report from the CMS referees. Good progress was reported on the ECAL. The referees also reviewed the CMS milestone schedule and reported on the contingency plans for the experiment. The referees also summarised the status of the PSI beam tests for the MSGCs which will lead to the final milestone tests in the autumn.
 

6. REPORT FROM THE LHCb REFEREES

The Committee heard a report from the LHCb referees. The status of the RICH and the inner tracker was summarised, and it was noted that the choice of the photodetector for the former is expected in the autumn 1999. The referees also reported that LHCb will henceforth concentrate their magnet design effort on the warm racetrack coil. The collaboration has also decided on two cell sizes for the calorimeters, on an HCAL depth of 5.64 l , and decisions have also been made on the trigger Level-0 latency and implementation.
 

7. ALICE TRANSITION RADIATION DETECTOR ADDENDUM TO TECHNICAL PROPOSAL

The LHCC has completed its review of the TRD addendum to the ALICE Technical Proposal submitted in May 1999. The Committee is impressed by the quality of the work presented in the addendum and congratulates the collaboration. The motivation for the TRD is based on sound physics arguments. With half the coverage of the final detector, electron pairs of low mass, J/y , open charm and open beauty production can be studied. These studies can be extended to the high mass continuum and to high-PT with the full detector. The physics issues complement those addressed by the muon spectrometer.

To this aim, the LHCC recommends that the collaboration proceeds to a Technical Design Review for the TRD, to be submitted in August 2000 and which should include the results of tests on a full-scale prototype.
 

8. TEST BEAMS

T. Ruf showed the updated schedules of the 1999 SPS and PS Fixed Target Programmes, including that of the Lepton Pre-Injector (LPI) at the PS Complex. He also provided a status report of the various test beam activities, giving the general impression that all users which had been ready succeeded to fulfill their planned programme despite some loss of beam time due to accelerator faults. The Coordinator informed the Committee that test beams with a 25 ns bunch structure are being planned for the beginning of the proton run in the year 2000.
 

9. ANY OTHER BUSINESS

There was no other business.
 

10. DATES FOR 1999 MEETINGS

2 - 3 September (Thur - Fri)

20 - 21 October (Wed - Thur)
 

The LHCC received the following documents

- Report of a meeting of the Magnet Advisory Group to the LHCC, held at CERN
   on 3-4 February 1999 (LHCC 99-10)*

- ALICE Collaboration: Inner Tracking System Technical Design Report
   (LHCC 99-12 / TDR 4)

- ATLAS Collaboration: Detector and physics performance Technical Design Report
   (Vol. 1) (LHCC 99-14 / TDR 14)

- ATLAS Collaboration: Detector and physics performance Technical Design Report
   (Vol. 2) (LHCC 99-15 / TDR 15)

- Cost evaluation of the ALICE PHOS and ZDC Technical Design Reports
   (LHCC 99-21)*

- Summary of ATLAS milestones (LHCC 99-24)*
 
 

* Restricted circulation only.
 
 
 
 
 

Emmanuel Tsesmelis
e-mail: LHCC.Secretary@CERN.CH
Tel. 78949

 

LHCC Secretariat: Janet Grant (Bldg. 14/4-022) Tel. 73424
Janet.Grant@CERN.CH