CERN/LHCC 99-6

LHCC 38

31 January, 1999

LARGE HADRON COLLIDER COMMITTEE

Minutes of the thirty-eighth meeting held on Thursday and Friday,

21-22 January 1999

CLOSED SESSION :

Present: B. Adeva, G. Altarelli, J. Carr, R. Cashmore, M. Delfino, J. Engelen (Chairman), A. Ereditato, B. Foster, G. Goggi*, M. Kasemann, R. Kephart, H. Kolanoski*, S. Komamiya, J. Lee-Franzini, J. May, M. Mazzucato, K. Potter, A. Read, G. Rolandi, A. Rostovtsev, P. Roudeau, T. Ruf*, H. Schellman, D. M. Sendall (Secretary), R. Voss* (representing G. Goggi), H. Wenninger*, G. Zech.

*) Part time

Apologies: L. R. Evans, L. Maiani, P. Sharp.

(A. Ball, A. Benvenuti, M. Della Negra, A. Herve, H. Reithler and T. Virdee were present for point 2).

1. The Chairman welcomed the new ex-officio members of the Committee.

The minutes of the thirty-seventh LHCC meeting (LHCC 98-41 / LHCC 37) were approved without amendment.

2. STATUS REPORT ON CMS MUON SYSTEM

F. Gasparini presented a status report on the CMS muon system, covering the revised design of the Barrel Drift Tube chambers, and studies of trigger and tracking performance with the 4th Z superlayer suppressed. These are documented in note LHCC 99-3

3. REPORT FROM THE CMS REFEREES

The committee heard a report from the CMS referees. An Engineering Design Review of the muon project has recently been carried out. After a thorough review, the referees consider the design changes to be well-justified and documented. The LHCC discussed the new approach and is satisfied with its soundness.

The referees also presented progress and plans for the Hadron Calorimeter, where an Engineering Design Review has been carried out for the barrel (HB). Trigger and Data-Acquisition, and Object-Oriented reconstruction software were also reviewed.

4. REPORT FROM THE ATLAS REFEREES

The committee heard a report from the ATLAS referees, based on their recent meetings with the collaboration. The tile and liquid argon calorimeters were reviewed, including recent module-0 test-beam results.

The overall milestones were also presented, along with the mechanisms for monitoring them and taking appropriate action.

5. REPORT FROM THE ALICE REFEREES

The committee heard a report from the ALICE referees, covering the schedule of TDRs planned for 1999, plus progress reports on the PHOS and PPC systems and an overview of the Data-Acquisition system.

6. REPORT FROM THE LHCb REFEREES

The committee heard a brief report from the LHCb referees, presenting status and plans for the various subsystems. The referees were pleased to note the progress made. Full meetings between the referees and the collaboration are restricted to every other LHCC, and therefore a fuller report will be presented at the next LHCC.

7. TEST BEAMS

In the temporary absence of T. Ruf, R. Voss reported that the SPS and PS fixed target schedules have been discussed and adopted by the users. Although almost all beam time is booked, there are no remaining major conflicts.

The LHCC notes that a review is expected by the SPSC of the ATLAS and CMS requests for tests with a 25 nsec bunched beam.

8. OTHER BUSINESS

G. Altarelli reported that the planned workshop on Standard Model physics and related subjects has now started. The first plenary session is planned for 25-26 May, to be followed by a report to the LHCC.

9. DATES FOR 1999 MEETINGS

Due to clashes with other meetings, some LHCC dates for the second half of 1999 have been changed. The provisional dates are now as follows:

25 - 26 March (Thur - Fri)

27 - 28 May (Thur - Fri)

7 - 8 July (Wed - Thur)

2 - 3 September (Thur - Fri)

20 - 21 October (Wed - Thur)

The LHCC received the following documents

LEB: Proceedings of the Fourth Workshop on Electronics for LHC Experiments
(LHCC 98-36)

RD29 Collaboration: Final Status Report LEB / RD29 (LHCC 98-37)

RD12 Collaboration: Status Report LEB / RD12 (LHCC 98-38)

RD48 Collaboration: Status Report LEB / RD48 (LHCC 98-39)

ALICE referees: Review of the ALICE RICH-HMPID Technical Design Report
(LHCC 98-42) *

RD44 Collaboration: Status Report LCB / RD44 (LHCC 98-44)

CMS Collaboration: changes in CMS muon system (LHCC 99-3)

* Restricted circulation only.

D. M. Sendall

E-mail: LHCC.Secretary@CERN.CH

Tel. 74968

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

Janet.Grant@CERN.CH