Board 3 & 4 December 2001
- Discussion of DAQ & ECS TDR
- Status of RICH Photo Detector review
- M & O cost in 2002, cat
A & B
Hans Jürgen Hilke
- Tracking / LHCb light
Tatsuya Nakada/Marcel Merk
- Submission dates for
Detector layout conflicts
Future Beam Time Allocation
Announcement on EDMS demonstration and
discussion on DSS
Participants: G. Carboni, J. Christiansen,
B. D’Alemagne, H. Dijkstra, W. Flegel,
R. Forty, C. Gaspar (for point 1), J. Harvey,
H.J. Hilke, B. Jost, D. Lacarrere,
J. Lefrançois, R. Lindner, C. Matteuzzi, M.
Merk, T. Nakada, C. Padilla, T. Ruf,
B. Schmidt, O. Schneider,
A. Schopper, A. Smith, O. Steinkamp, D. Websdale
Hilke started the meeting with the introduction of A. Smith as the new LHCb
Resources Manager and C. Padilla as new Outer Tracker Project Leader, succeeding
- B. Jost presented the
latest version of the Online System TDR, focusing on the project planning
and hardware responsibilities. An extensive discussion followed
chapter-by-chapter. The TB concluded that the TDR is very well written; only
minor modifications were requested.
The TB agreed to the schedule proposed:
Comments from the whole collaboration should arrive < 14th
December. The final version should be sent to the print shop on the 19th
- D. Websdale reported on the status of the RICH Photon Detectors and
presented the comments and final recommendation from the review panel:
The HPD will be maintained as baseline and the MAPMT as backup solution,
the October 2001 milestone for the final choice of photo detectors,
including all technical requirements will be shifted to June 2002. The
failure of the milestones will trigger the switch to the MAPMT, only in the
event of a further delay of the LHC start up this decision may be reviewed.
The TB endorsed the RICH HPD panel recommendation.
- H.J. Hilke reminded the TB members, that R. Cashmore insists on
more detailed information concerning M&O costs category ‘B’. Coordinators
and Project Leaders are asked to study their particular subsystems. A. Smith
will follow up this issue.
- Tatsuya summarized the status of ‘LHCb-Light’ studies,
concentrating on a comparison between ‘Classic’ and ‘Classic-minus.
‘Classic-minus’ T1, all three magnet stations and one of the four seeding
stations are suppressed. This results in a reduction of X0 by
15%. Tracking efficiencies have been shown to be very similar and particle
identification to be only slightly worse for ‘Classic-minus’. Ks
reconstruction is significantly worse, but improvements should be possible.
The TB, therefore, concluded that in view of
the limited resources we should concentrate on a single direction and
as baseline from now on and
continue strongly our
efforts to further reduce X0 and li (VELO, RICH1) and optimise the layout (split TT1,
- Submission Dates for TDRs outstanding:
Inner Tracker October 2002
the high level January 2003
Computing end of 2003
LHCb light October 2002
- R. Lindner summarized the areas, where the present detector layout
Between RICH 2 and
the electronic racks of the first Muon station
Between the Outer
Tracker 9 support and RICH 2
In case we would keep
T1 there would not be enough space between VELO and RICH 1
- R. Lindner showed the revised test beam schedule for 2002. The new
schedule included the 20-30% reduction in beam time compared to the user
request from October 2001.
- EDMS: D. Lacarrere asked all LHCb groups to start using the EDMS
system as soon as possible.
- DSS: Coordinators and Project Leaders should prepare information on
their needs by February 2002.