Difference between revisions of "Solid Calorimeter"
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The test time is Dec 2012 - May 2012, this includes planning, bench test and beam test. | The test time is Dec 2012 - May 2012, this includes planning, bench test and beam test. | ||
| − | The bench test will be held at in Jlab | + | The bench test will be held at in Jlab. We will use cosmic rays to do gain match. Two scintillator bars will be used for trigger. |
| − | + | ||
| − | g2p | + | For beam test, The plan is to have it in HallB under photon tagger. After passing through a photon radiator and swept by tagger magnet, electrons will 5-95% of beam energy will pass photon tagger and hit on the floor. We will place the calorimeter module on the floor aligned with electrons at various locations for test. |
| + | refer to the plot at https://halldweb1.jlab.org/wiki/index.php/2011_Hall_B_FCAL_Beam_Test#Geometry | ||
| + | |||
| + | Currently, HallD is doing their lead glass FCAL test there. They have 25 4x4cm modules in 5x5 array mounted on a rail. Two of 5 scintillator bars on top of each others are used as trigger in a box above the calorimeter modules. Another small scintillator is mounted under Tagger counter to work as a veto at offline stage. see their setup here | ||
| + | https://halldweb1.jlab.org/wiki/index.php/FCAL_Beamtest_Setup_Pictures | ||
| + | http://www.flickr.com/photos/63927802@N02/sets/72157627993117345/ | ||
| + | |||
| + | |||
| + | |||
| + | Note: the g2p/gep in HallA has target coil and septa blocking forward angle up to 30 degree, this makes it impossible to have elastic electrons with good rate for test. | ||
= talks and notes = | = talks and notes = | ||
Revision as of 18:11, 5 December 2011
previous pages (some info outdated)
file dir
/u/group/halla/www/hallaweb/html/12GeV/SoLID/download/ec
http://hallaweb.jlab.org/12GeV/SoLID/download/ec/
the "doc" sub-directory has collective of documentation for R&D
beam test plan
We plan to test the COMPASS shahlyk modules.
The goal is to learn the feature and performance of the modules. We will test energy, position and time resolution and use the results to anchor our simulation. This will thus help us design the future SoLID prototype.
We will use the TPE (two photon exchange) calorimeter for test. It consists of 30 4x4cm COMPASS modules in 5x6 array and sit in a metal box/frame. The calorimeter was used in TPE experiment in HallB and currently sits at ODU with Larry Weinstein's group. They need to be returned to Will Brooks at Chile in Summer 2012.
The test time is Dec 2012 - May 2012, this includes planning, bench test and beam test.
The bench test will be held at in Jlab. We will use cosmic rays to do gain match. Two scintillator bars will be used for trigger.
For beam test, The plan is to have it in HallB under photon tagger. After passing through a photon radiator and swept by tagger magnet, electrons will 5-95% of beam energy will pass photon tagger and hit on the floor. We will place the calorimeter module on the floor aligned with electrons at various locations for test. refer to the plot at https://halldweb1.jlab.org/wiki/index.php/2011_Hall_B_FCAL_Beam_Test#Geometry
Currently, HallD is doing their lead glass FCAL test there. They have 25 4x4cm modules in 5x5 array mounted on a rail. Two of 5 scintillator bars on top of each others are used as trigger in a box above the calorimeter modules. Another small scintillator is mounted under Tagger counter to work as a veto at offline stage. see their setup here https://halldweb1.jlab.org/wiki/index.php/FCAL_Beamtest_Setup_Pictures http://www.flickr.com/photos/63927802@N02/sets/72157627993117345/
Note: the g2p/gep in HallA has target coil and septa blocking forward angle up to 30 degree, this makes it impossible to have elastic electrons with good rate for test.
talks and notes
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
