Minutes of SuperB EMC meeting, Wednesday 120523
Indico agenda at:
http://agenda.infn.it/conferenceDisplay.py?confId=5127
1) Elisa's presentation will be re-scheduled for Elba.
2) TDR:
Notes from 120426 meeting, updated according to 120523 discussion:
Current EMC chapter is on agenda page at:
http://agenda.infn.it/getFile.py/access?contribId=1&resId=0&materialId=0&confId=5127
People are encouraged to commit changes frequently.
Numbers are sections:
Overview:
9.1.1 Figs 9.1-9.3 may need to be updated with new rate calculations
9.1.2 Simulation tools - agreed that this was appropriate place to keep
this discussion. Presumed authors:
9.1.2.1 Chih-hsiang - will do, can be brief
9.1.2.2 Stefano - question about what goes here and what goes
in the background chapter. A brief description of the tool goes here;
include brief description of how backgrounds are done, but refer to
background chapter for detailed discussion.
Barrel: (Kevin)
9.2.1.1 Figure 9.4 will be changed using ntuples from David Doll (Kevin)
I think this has been done(?)
9.2.2.2 Readout - beginning of May (Valerio) (EVO problems prevented us
from having a conclusive discussion here)
9.2.2.3 Calibration (Kevin, with Andy Ruland)
9.2.3.1 Resolution (Wenfeng, with Kevin)
9.2.3.3 Effect of radiation damamge - more to be added (pi0 and mass resolution
as fn of time/dose) (Wolfgang Gradl, with Kevin)
9.2.4 Electronics changes (Valerio, beginning of May)
9.2.5 Kevin will write up from his talk at Frascati.
photos are OK
9.2.6 Electronics refurbishment
Valerio
9.2.7 Calibration systems
DavidH has given to Kevin and Ric
9.2.8 Re-installation at Tor Vergata
Now includes local storage. Could be at Roma2?
Baseline is modules taken apart, impacts storage.
Alternative is ship as a whole, then could in principle be
stored in IR hall.
Kevin can produce generic discussion; any details will
have to come from others (who?)
Forward: (Ric)
9.3.0 Requirements [was 9.3.1, but no longer appears; I don't
recall a decision to remove?] - May need to be modified if the benchmark is the
degraded barrel, and to reflect cost "requirement"
9.3.1 Crystals
Depending on which forward option becomes baseline, may be able to
shorten or move much of discussion to an appendix.
9.3.9 Mechanical Design
There will be differences depending on the hybrid vs pure CsI choices.
The present discussion on the new structure could be put in an
appendix?
9.3.10 Performance
Include new production. Fastsim studies (Chih-hsiang)
9.3.11 Test beam
Maybe can shrink this section, depending on choice of technology.
Still plan to do a paper.
Trigger discussion to be done (Claudia will check with Ric about who
can do this).
Somemore work to do on results (Claudia)
9.3.12 Alternatives
The fact that we thought about PWO should be mentioned (eg including
studies from Stefano)
9.3.12.2 Pure CsI (Claudia)
9.3.13.3 BGO
Has been added (Ric)
Backward (Gerald)
Essentially complete.
9.4.1 Physics
Needs to be merged in with later discussion (9.4.7).
Done, but section still exists. Will look at in editing pass;
probably delete.
9.4.2.2 Background rates
Numbers and Figure 9.50 probably will need to be updated according
to new production.
9.4.7 (See also 9.4.1 above)
Perhaps add some rather generic comments about additional places
that backward endcap could have an impact, but which have not
been studied. Examples include B tagging efficiency and
(high energy) gamma + invisible events.
This has been added in 9.4.9
Remarked that fullsim still does not have the complete backward
geometry, so detalied studies precluded.
Trigger (Valerio)
9.5 Trigger
Felt that there should still be some discussion here on trigger,
e.g., on the EMC primitives, even though most of trigger will
be discussed in ETD chapter.
Detector protection
9.6.1 Thermal shock (Kevin?)
Risk of PINs popping off; need to control thermal environment
9.6.2 Mechanical shock (Kevin, with Shawn)
9.6.3 Fluid spills (Kevin - barrel)
9.6.4 Electrical (Valerio?)
9.6.5 Radiation damage
Should add discussion of accelerator interlocks.
The barrel is most difficult, because the forward detector
is more accessible, and replacement of damaged components
more plausible.
Cost&schedule
9.7 This section will be somewhere else. Work on cost&schedule
expected to start in earnest at/following Elba
3) Elba agenda
Current draft agenda for Elba at:
http://agenda.infn.it/getFile.py/access?contribId=2&resId=0&materialId=1&confId=5127
3 EMC sessions.
Items will include:
- results from new production/shielding
- TDR
- Barrel (and BaBar endcap structure - work has been underway with SLAC
on finding drawings and tooling; people are in good communication)
- Dicussion of increased reliability requirements due to decreased
accessibility (integration item below).
Claudia and Frank will Skype to discuss agenda.
4) AOB
Slides from Integration meeting posted on Indico site, for information:
http://agenda.infn.it/getFile.py/access?contribId=3&resId=0&materialId=0&confId=5127
Impacts of structure needed to support added weight of shielding near IP:
- accessibility to readout and crystals of forward EMC becomes harder
- backward calorimeter will need to be installed in pieces.
Next meeting will be at Elba
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