Minutes of the SuperB DCH R&D meeting on March 2nd, 2009
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Present:
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Finocchiaro, Peruzzi, Rama (LNF)
Hearty (UBC)
Asner, Tatishvili (Carleton)
Roney (UVic)
1. Discussion on Representatives:
Subdetectors have been asked to provide "point of contact representatives"
to the general detectors group:
Fast Simulation
Detector Geometry Working Group
Electronics, DAQ & Trigger
MDI and Backgrounds
Full Simulation
Rama, Finocchiaro, Felici available to serve as representatives of the
first four groups.
- FastSimu, DGWG --> Rama (Convener of both groups).
- MDI and Background --> Finocchiaro.
- Electronics, Trigger and DAQ --> Felici (LNF Physicist; designed among
others the KLOE DC Electronics and the LHCb Muon system electronics).
- Full Simu --> Will explore Steve Robertson's avalaibility to cover this
role [ACTION ITEM]. ==> Steve eventually gave his avalaibility.
Regarding the Full Simulation, it has been suggested that integrating
Garfield (and Magboltz/Heed) into the simulation would be a valuable thing
to do [ACTION ITEM?].
2. WBS
Clearly the manpower needs for the various tasks depend on the detail
and depth of the study. The present WBS estimates assume that the BABAR
DCH constitutes a reasonable starting point. They also assume that, after
an initial phase needed to set up the necessary software tools, a finite,
reasonably small, number of different configurations are compared against
some set of benchmark channels. Part of the job consists in fact in
determining the benchmark channels.
Even with the above caveats, it is felt that for items 1.1.1 through 1.1.4
1mm (man-month) is too optimistic. This figure has been doubled in the revised
spreadsheet. Similarly, manpower needs for items 1.2.2.3 through 1.2.2.5
have been increased (1/0.5/0.5 --> 3/1/1).
Section 1.2.4 refers to the construction of 1 small (table-top-size) drift
chamber prototype for gas mixture and cell structure studies. 1 Physicist
mm for the design has been added.
One such small prototype is being designed at LNF. At some point another
one can be built at TRIUMF.
Beam test manpower (1.2.4.2.5) has been doubled.
There was some discussion that at some point the need will arise for a
full-scale prototype of the final chamber, to allow a test of all
construction and operational features, including realization of the
mechanical structure, stringing, stereo wires, data acquisition, track
recontruction.
This is probably not needed on the TDR time scale, but could make sense to
mention it in the WBS. Manpower needs for this effort would of course be
significantly bigger than for the small prototype [ACTION ITEM?].
In the TDR we are probably not required to say much about the gas system,
which will be no different from any previous drift chamber gas system. For
the real SuperB DCH, Giusieppe will try and understand from the Annecy people
whether we can use theirs [ACTION ITEM].
Another point which is not mentioned so far in the WBS is the slow monitor
system, which of course needs to be fully integrated with the general
SuperB one. Again, there appears no need for a specific discussion of this
in the TDR.
Finally, it was discussed that it could make sense to foresee some computing
professional personnel to take care in a centralized way of the Monte Carlo
production needed for the DCH optimization. Since we'll need to consider
several benchmark channels, even comparing a finite number of DCH options
implies producing a large amount of MC, with considerable book-keeping
complications. An entry has been added on cell F13 of the WBS, with the
provision that the actual need for such a professional figure will be
assessed together with the DGWG [ACTION ITEM?].
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