View source for Solid Largeangle Calorimeter

== Concept ==

The Largeangle Calorimeter (LC) provides particle ID for the large acceptance region of SIDIS [[SoLID]] experiments. 
* Preshower- shower configuration
* Incidental momentum 3~7 GeV/c
* Provide a pion rejection factor of 200:1
* coverage: 13~22 degree (CDF design)
* In 1.5T field
* Radiation hard
* Better be thin, small radiation length

== Calorimeter ==

=== Option: W-SciFi ===

==== Introduction ====

Reading:
* [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 ]
* [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 ]

Simulation tools: 
* SVN source [https://jlabsvn.jlab.org/svnroot/solid/CaloSim/]
* Adopted from [[https://hallaweb.jlab.org/wiki/index.php/Solid_Forward_Calorimeter#how_to_run_code|forward angle calorimeter simulation]]
* Added support for 
** Set field from mac script:   ex. mac/TestFile.mac
** Added hadron simulation, beam of pion, kaon from mac script:   ex. mac/TestFile.mac
** Added option for preshower - shower confirguration:   switch configurations at src/CaloSimDetectorConstruction.C::Construct()
** Script tools to convert GEMC phase space to input file and load via mac scripts:   high level script at script/GEMC2CaloSimScript.C

==== Initial Studies ====

[[Image:Electron in SoLID LC.png|400px|thumb|3 electrons in LC with 1.5T magnetic field]]

[[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]]

* Shower Only Configuration 
** Simulated w/ 1.5T field; fiber is along the field direction; W plate is placed along the azimuthal direction.
** E/p plot is shown on the right
** Reasonable Pion electron separation

* PreShower-Shower Configuration 
** [http://www.jlab.org/~jinhuang/Meeting/2011.03.25%20SoLID%20Collaboration%20Meeting/LC.pdf Talk on Mar 25, 2011 collaboration meeting]
** [http://www.jlab.org/~jinhuang/Meeting/tmp/477.htm A results log with 4cm pre-shower and 15cm shower]

=== Option: Shashlyk Calorimeter ===

==== Introduction ====



== Light Collection and Detection ==

=== Option: outside PMT w/ Fiber extension ===

=== Option: GEM PMT ===

=== Option: Silicon based PMT ===

Popular choice but not a good one for LC, due to high background.

== DAQ ==

FPGA based waveform digitalizer?