LHCC Minutes 22-23 October 1998

CERN/LHCC 98-41
LHCC 37
29 October, 1998

LARGE HADRON COLLIDER COMMITTEE

Minutes of the thirty-seventh meeting held on Thursday and Friday,
22-23 October 1998

CLOSED SESSION :

Present: B.Adeva, G.Altarelli, W.Bartel*, J.Carr, R.Cashmore, J.Engelen (Chairman), A.Ereditato, L.Fo, B.Foster, D.Hartill, M.Kasemann, H.Kolanoski*, S.Komamiya, J.Lee-Franzini, C.Llewellyn Smith*, J.May, M.Mazzucato, N.McCubbin, K.Potter, A.Read, G.Rolandi, A.Rostovtsev, P.Roudeau, H.Schellman, A.Schwarz, D.M.Sendall (Secretary), M.Spiro, E.Tsesmelis, R.Voss (representing G.Goggi), G.Zech.

*) Part time

Apologies: L.R.Evans, R.Kephart, P.Sharp, H.Wenninger.

(U.Becker was present for points 7 and 8) .

1. The Chairman and the Director-General welcomed the new members of the Committee. The Director-General took the opportunity of his last meeting to thank the LHCC for the vital role it has played for CERN and the community. He also thanked Professor L.Fo for the magnificent job that he had done in wisely steering the LHC experiments through the process from Letters of Intent, and approval, to the beginning of construction.

The minutes of the thirty-sixth LHCC meeting (LHCC 98-29 / LHCC 36) were approved without amendment.

2. C.Llewellyn Smith summarised the status of the LHC project which is progressing well. Further contracts have been adjudicated and remain within the budget envelopes foreseen.

3. ALICE STATUS REPORT

J.Schukraft presented a status report on ALICE, covering the status of the collaboration, the R&D programme, resources and the revised TDR schedule. He also outlined the physics interest of the High Momentum PID system.

4. REPORT FROM THE ALICE REFEREES

The committee heard a report from the ALICE referees, covering their review of the Technical Design Report for the RICH High Momentum PID.

5. REPORT FROM THE COST REVIEW GROUP

W.Bartel reported on the cost evaluation of the ALICE High Momentum PID TDR. The cost estimates have a firm basis in industrial offers and in the experience gained during prototype work. The costing is considered reasonable and fits into the overall cost of the experiment. The LHCC endorses this conclusion.

6. ALICE HIGH MOMENTUM PID TECHNICAL DESIGN REPORT

The LHCC has completed its scientific, technical, and cost evaluation of the ALICE RICH High Momentum PID TDR submitted in August 1998. The committee was impressed by the quality of the work presented in the TDR, and congratulates the collaboration. In particular, the development of a viable RICH technology based on CsI-coated pad cathodes represents a substantial achievement by RD26 and latterly by ALICE. The TDR describes a detector for the identification of high momentum (>1.5 GeV/c) particles which is capable of performing satisfactorily in the very high-multiplicity environment, and which complements other ALICE measurements in a significant way.

The committee has no significant concerns on the detector technology, and notes that ALICE plans some further optimisation before proceeding to final production. Further remarks and a list of agreed milestones for monitoring the progress of the project are given in an ancillary document (LHCC 98-42).

The LHCC review was not an engineering review, although engineering aspects are described in some detail in the TDR and were presented and discussed with the referees. It is recommended that ALICE should conduct an independent review of engineering designs, appropriate to the scale of the project. The written report from this review should be made available to the LHCC through its referees.

Recommendation

The LHCC recommends general approval of the ALICE RICH High Momentum PID Technical Design Report. The LHCC considers the schedule given in the TDR and the revised list of milestones in the ancillary document to be reasonable. They will be used by the committee to measure and regulate the future progress of the project.

7. REPORT FROM THE ATLAS REFEREES

The committee heard a report from the ATLAS referees, based on their recent review with the collaboration, including progress on the tile calorimeter and work on the liquid argon module-0 tests. A full review of the muon system alignment demonstrated promising progress.

The referees also reported on the ATLAS interim status report on computing. Their comments and recommendations will be available shortly. An internal computing review committee has been set up, and ATLAS plans a full report to the LHCC in December 1999.

The current TDR schedule was presented. The collaboration plans to submit a Physics Performance TDR in Spring 1999. The referees feel that any delay beyond this would be inadvisable, given the importance of moving physics studies to an object-oriented basis, and of involving more collaboration members in this activity. The LHCC supports this view.

8. REPORT FROM THE CMS REFEREES

The committee heard a report from the CMS referees, covering their recent review of the hadron calorimeter and muon project. A more complete review of the HCAL will be presented at the January 1999 meeting of the LHCC, following an internal engineering review by CMS.

A number of design changes have been proposed in the muon project. The LHCC notes that significant changes from designs described in TDRs should be signalled in good time to the referees and adequately documented, and requests the collaboration to submit a written report presenting these changes.

9. REPORT FROM THE RD39 REFEREE

The committee heard a report from the RD39 referee on the addendum (LHCC 98-27) to their proposal, concerning the operation of solid-state detectors at liquid nitrogen temperatures. He summarised the background, current interest from experiments and RD48 (ROSE), recent encouraging beam test results, and plans for further work. The referee recommends that the collaboration should carry out their proposed further programme of work and report to the LHCC late in 1999.

The LHCC agrees to the continuation of the project on this basis.

10. REPORT FROM THE LHCb REFEREES

The committee heard a report from the LHCb referees giving an overview of the status of the various subsystem projects, following their recent review with the collaboration. The referees were pleased to note the progress made.

11. REPORT FROM THE LHCC COMPUTING BOARD

M.Mazzucato reported on the work of the LCB, covering a number of topics discussed at their recent meetings: further details can be found in the LCB minutes. The LCB has reviewed the RD45 (ODBMS) milestones, and have endorsed further milestones for the next 18 months. The first annual status report from LHC++ has been received: the LCB was pleased by the substantial progress reported. A production release has been made and distribution kits for outside labs are available. A more detailed review will follow shortly. The project on videoconferencing support for LHC experiments was reviewed and excellent progress noted: continuation to the end of Phase 1 is recommended, and a revised plan for Phase 2 will be submitted shortly.

The LCB has received a Project Execution Plan for MONARC (Models Of Networked Analysis at Regional Centres for LHC experiments) and one is in preparation for SPIDER (Software Process Improvement for Documentation, Engineering and Reuse).

12. TEST BEAMS

E.Tsesmelis discussed the 1999 SPS and PS fixed-target programme; a draft schedule is in preparation for discussion with users in November 1998. It is based on the 1999 SPS machine schedule, as recommended by the SPSC for approval at the November 1998 Research Board. Very little spare time is left for late requests. He also described progress towards beam tests for the ATLAS liquid argon barrel module-0 during the heavy ion run in November 1998. The ATLAS and CMS requests for tests with a 25 nsec bunched beam are currently being reviewed by the SPSC.

L.Fo thanked E.Tsesmelis for his work as SPS and PS co-ordinator, from which he retires at the end of 1998. His efforts have been essential to the successful definition and operation of the LHC test beam schedules.

13. OTHER BUSINESS

G.Altarelli reported on plans and organisation for the proposed workshop on Standard Model physics and related subjects. Following discussion with the collaborations, it is now agreed to start work in January-February 1999, with a first plenary session in May and a second and last plenary session in September-October. Working groups and convenors have been proposed for top physics, electro-weak and tau physics, QCD, and b-physics. On the subject of Monte Carlo simulation, in view of the scope of the topic, a dedicated workshop in 2000 is preferred.

14. REFEREES

Following the changes of LHCC membership, the referees are now as follows:

ALICE: B.Adeva, A.Ereditato, G.Rolandi (Co-ordinator), G.Zech

ATLAS: M.Kasemann, R.Kephart (Co-ordinator), J.Lee-Franzini, P.Roudeau

CMS: J.Carr (Co-ordinator), H.Kolanoski, S.Komamiya, A.Read

LHC-B: B.Foster (Co-ordinator), A.Rostovtsev, H.Schellman

MOEDAL: P.Roudeau

TOTEM: G.Rolandi

15. DATES FOR 1999 MEETINGS

21-22 January

25-26 March

27-28 May

8-9 July

2-3 September

4-5 November

The LHCC received the following documents

o Cost Review Group CORE: Report on LHCb Technical Proposal (LHCC 98-33) *

o Cost Review Group CORE: Report on ATLAS Pixel Detector and First-level Trigger TDRs (LHCC 98-34) *

o Cost Review Group CORE: Report on ALICE High Momentum PID TDR (LHCC 97-40) *

* 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