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| − | == Concept ==
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| − | The Largeangle Calorimeter (LC) provides particle ID for the large acceptance region of SIDIS [[SoLID]] experiments.
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| − | * Preshower- shower configuration
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| − | * Incidental momentum 3~7 GeV/c
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| − | * Provide a pion rejection factor of 200:1
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| − | * coverage: 13~22 degree (CDF design)
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| − | * In 1.5T field
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| − | * Radiation hard
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| − | * Better be thin, small radiation length
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| − | == Calorimeter ==
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| − | === Option: W-SciFi ===
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| − | ==== Introduction ====
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| − | Reading:
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| − | * [http://dx.doi.org/10.1016/j.nima.2009.01.007 A tungsten/scintillating fiber electromagnetic calorimeter prototype for a high-rate muon (g−2) experiment, NIM Volume 602, Issue 2, 21 April 2009, Pages 396-402 ]
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| − | * [http://dx.doi.org/10.1016/0168-9002(90)90285-E A high-resolution lead /scintillating fiber electromagnetic calorimeter, NIMA, Volume 294, Issue 3, 15 September 1990, Pages 446-458 ]
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| − | Simulation tools:
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| − | * SVN source [https://jlabsvn.jlab.org/svnroot/solid/CaloSim/]
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| − | * Adopted from [[https://hallaweb.jlab.org/wiki/index.php/Solid_Forward_Calorimeter#how_to_run_code|forward angle calorimeter simulation]]
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| − | * Added support for
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| − | ** Set field from mac script: ex. mac/TestFile.mac
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| − | ** Added hadron simulation, beam of pion, kaon from mac script: ex. mac/TestFile.mac
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| − | ** Added option for preshower - shower confirguration: switch configurations at src/CaloSimDetectorConstruction.C::Construct()
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| − | ** Script tools to convert GEMC phase space to input file and load via mac scripts: high level script at script/GEMC2CaloSimScript.C
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| − | ==== Initial Studies ====
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| − | [[Image:Electron in SoLID LC.png|400px|thumb|3 electrons in LC with 1.5T magnetic field]]
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| − | [[Image:EoverP SoLID SIDIS Large Angle Calorimeter with CaloSim Shower Only.png|400px|thumb|E/p for LC; Left: pi-; Right: electron; BaBar flat phase space]]
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| − | * Shower Only Configuration
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| − | ** Simulated w/ 1.5T field; fiber is along the field direction; W plate is placed along the azimuthal direction.
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| − | ** E/p plot is shown on the right
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| − | ** Reasonable Pion electron separation
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| − | * PreShower-Shower Configuration
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| − | ** [http://www.jlab.org/~jinhuang/Meeting/2011.03.25%20SoLID%20Collaboration%20Meeting/LC.pdf Talk on Mar 25, 2011 collaboration meeting]
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| − | ** [http://www.jlab.org/~jinhuang/Meeting/tmp/477.htm A results log with 4cm pre-shower and 15cm shower]
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| − | === Option: Shashlyk Calorimeter ===
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| − | ==== Introduction ====
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| − | == Light Collection and Detection ==
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| − | === Option: outside PMT w/ Fiber extension ===
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| − | === Option: GEM PMT ===
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| − | === Option: Silicon based PMT ===
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| − | Popular choice but not a good one for LC, due to high background.
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| − | == DAQ ==
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| − | FPGA based waveform digitalizer?
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