Solid Calorimeter
Contents
info
meeting
Agendas and Minutes of weekly meeting meeting info in the Minutes page also
Email list
"solid_ec at jlab.org" registration and archive
the administrator is Zhiwen Zhao (zwzhao at jlab.org)
file dir
- dropbox folder
https://www.dropbox.com/sh/365le2o93vpn14e/4DLnKV_lN-
ask Zhiwen Zhao to share the dropbox folder with you
- jlab folder (outdated)
upload files to /u/group/halla/www/hallaweb/html/12GeV/SoLID/download/ec
they show up at http://hallaweb.jlab.org/12GeV/SoLID/download/ec/
Dimension and Coverage
- dimension of limitation
- Fluxreturn space radius 90 - 270cm
- crystat radius 0 - 144cm
- dimension of support structure
- FAEC (shared by PVDIS and SIDIS) radius 93 - 265cm
- LAEC (only for SIDIS) radius 80 - 90 - 140cm
- dimension of module coverage
- PVDIS FAEC radius 105 - 265cm
- SIDIS FAEC radius 93 - 235cm
- SIDIS LAEC radius 80 - 90 - 140cm
- number of module estimation
- assume 100cm2 module area, calculate number of modules by coverage, we get PVDIS FAEC 1860, SIDIS FAEC 1464, SIDIS LAEC 415, SIDIS total 1879
- ANL design hexagon layout for FAEC has module about 1750 [1]
- So 1800 module in total is good guess
- note
- 0. the inner radius of fluxreturn could be reduced to 85cm for
- 2. the FAEC supporting structure is share between SIDIS and PVDIS experiments. While SIDIS needs from 96cm - 230cm and PVDIS needs 110cm - 262cm, the overall need is 96 - 262cm.
- 3. SIDIS FAEC needs to move upsteam 85cm to become PVDIS FAEC, so the supporting structure needs to allow the movement. Note at the before and after locations, the endcap nose shape changes. It's a concern if the supporting structure is connected to the endcap nose. If the supporting is only connected to the endcap donut (15cm thick iron), not the endcap nose, it won't be a concern then.
- 4. LAEC needs to support on its own without putting force on cryostat and its supporting may need to share with GEM to stay within the limited space inside the solenoid.
- 5. The LAEC 90-140cm is for the 100cm2 size module and LAEC 80-90cm is for smaller and shorter modules to fill the triangle area down to 14.85 degree line.
weight
assume 44 long and length ratio Pb:Sc=1:3 shower, 100*44*(0.75*1.032+0.25*11.34)=16kg
assume 2 radiation length lead 1.12cm and 2cm Sci preshower, 100*1.12*11.34+100*2*1.032=1.5kg
assume everything else, like wrapping, rod etc is about 2.5kg
total module weight about 20kg each
readout
fiber and connector
test stand
beam test 2012
todo list (2012/06)
talks and notes
2012_01_06 Jlab Physics Division Brain Storm Session by Xiaochao Zheng pdf
2011_12_09 meet with W&M and talk about general and beam test plan
2011_11_09 EC longitudinal segmentation option at weekly meeting
2011_10 collaboration meeting by Mehdi Meziane
2011_09_30 Jlab Physics Division Brain Storm Session by Jin Huang
2011_09_21 Update by Mehdi Meziane
2011_06 collaboration meeting by Zhiwen Zhao for forwardangle Calor
2011_06 collaboration meeting by Jin Huang for largeangle Calor
2011_03 collaboration meeting by Zhiwen Zhao for forwardangle Calor
2011_03 collaboration meeting by Jin Huang for largeangle Calor
previous pages (some info outdated)
Other ECAL
- LHCb
- KOPIO