View source for Sim geant4

'''for record keeping only, don't use it!'''

'''(simulation in GEANT4 with GEMC 1.x used for later proposals and pCDR)'''

== Solid simulation with GEMC  ==
=== For new users ===

GEMC is a wrapper around genat4. It's like a great genat4 example code, but makes detector geometry, material, sensitivity etc outside of source code and loadable on run time. It also make simulation output into standard format and can take input from event generators. Read the [http://gemc.jlab.org general GEMC info] on its website to learn what it is.  In particular take a look at the [https://gemc.jlab.org/gemc/Documentation/Documentation.html GEMC tutorials].

SoLID GEMC is what we use GEMC to do SoLID simulation. It includes SoLID detector definition, running script, output analysis code etc.

Check out the quick start, installation and running guide to run GEMC with Solid configuration.

Finally you can go through rest of items to really start using it.

Many information are cross linked through pages even with SoLID hardware design and software analysis. So make sure to browse around.

=== Quick start ===

* note
** make sure you have no other environmental variable set at login which may have conflict with GEMC. one way to do it is to rename .cshrc and .login to something else and log out and then in again

==== on ifarm using pre-compiled GEMC instllation====
 svn checkout https://jlabsvn.jlab.org/svnroot/solid/solid_gemc
 cd solid_gemc/script
 source set_solid
 run_solid_CLEO_PVDIS_inter  (this will show SoLID PVDIS setup)
 run_solid_CLEO_SIDIS_3he_inter  (this will show SoLID SIDIS setup)
 run_solid_CLEO_PVDIS_batch  (this will produce SoLID PVDIS output)
 run_solid_CLEO_SIDIS_3he_batch  (this will produce SoLID SIDIS output)

==== on any machine using a local GEMC installation====
 download and install GEMC by following the installation instruction [[install]]
 svn checkout https://jlabsvn.jlab.org/svnroot/solid/solid_gemc
 modify solid_gemc/script/set_solid to your local setting and then source it
 If your machine is outside of Jlab network, try tunnel through jlab firewall 
 with your jlab account to access solid database server, refer to [[mysql database]]
 put a copy of SoLID CLEO magnetic field map file [http://hallaweb.jlab.org/12GeV/SoLID/download/field/solenoid_CLEO.dat solenoid_CLEO.dat] at where defined by the FIELD_DIR option
 then you can run the script like run_solid_CLEO_PVDIS_inter, run_solid_CLEO_SIDIS_3he_inter,run_solid_CLEO_PVDIS_batch, run_solid_CLEO_SIDIS_3he_batch
 refer to details in [[run]]

=== General info ===

==== links and contacts ====
* GEMC website '''http://gemc.jlab.org'''  (old http://clasweb.jlab.org/wiki/index.php/Gemc)
* GEMC SVN '''https://clas12svn.jlab.org/repos/clas12/gemc/tags/''', WebSVN interface http://clasweb.jlab.org/websvn/prod/listing.php?repname=CLAS12&path=%2Fclas12%2Fgemc%2F&sc=1#_clas12_gemc_
* SoLID_SVN '''https://jlabsvn.jlab.org/svnroot/solid''', WebSVN interface https://jlabsvn.jlab.org/solid/listing.php?repname=solid
** SoLID_GEMC SVN '''https://jlabsvn.jlab.org/svnroot/solid/solid_gemc'''
** solgemc SVN '''https://jlabsvn.jlab.org/svnroot/solid/solgemc'''

'''general question, please email Zhiwen Zhao <zwzhao@jlab.org>'''

'''solgemc related question, please email Seamus Riordan <riordan@jlab.org>'''

==== Things to know ====

'''Use a graphic SVN to monitor code change with alert'''

GEMC ouput with unit MeV, mm, ns in flux and gen banks, we should keep the same unit for newly generated banks.

GEMC doesn't record passby particles which deposit zero energy in the sensitive area. To record it by option "-RECORD_PASSBY=1"

=== [[install| install GEMC for SoLID simulation]] ===

=== [[run| run GEMC with SoLID configuration]] === 

=== [[mysql database]] ===

=== [[geo| define geometry/material/sensitivity]] ===

=== [[Magnetic Field Map| magnetic field map]] ===

=== [[hitprocess| hit processing]] ===

=== [[output| simulation output]] ===

=== [[eventgenerator| event generator]] ===

=== [[Solgemc GDML Visualization|Visualization through GDML and directly through GEMC]] ===

== Simulation Study ==

=== [[acceptance| acceptance ]] ===

=== [https://hallaweb.jlab.org/wiki/index.php/Compare_to_geant3_result] ===

=== [https://hallaweb.jlab.org/wiki/index.php/Solid_SIDIS_Kinematics  SIDIS kinematics] ===

=== [[GEM Digitization| Solid GEM Digitization]] ===

=== [[Background| rate and background]] ===

=== [[pi e ratio| pi e Ratio]] ===

=== [[design FOM|Figure of Merit for baffle designs]] ===

=== [[Tracking| Tracking]] ===

=== [[SIDIS/PVDIS Cherenkov]] ===

== talks and notes ==

[http://hallaweb.jlab.org/12GeV/SoLID/meeting_coll/2011_03/SoLID_simulation_zwzhao.pptx Solid simulation 2011/03] (Zhiwen)

[http://hallaweb.jlab.org/12GeV/SoLID/meeting_coll/2011_01/riordan_solid_jan2011.pdf SoLID Monte Carlo 2011/01]  (Seamus)

[[media:solid_simulation_20101029_zwzhao.pdf‎ | Strategy 2010/10 (Zhiwen) ]]

== General thoughts ==

=== [[Thought on solid gemc developing]]===

=== [https://hallaweb.jlab.org/wiki/index.php/Strategy/task/milestone] ===

=== [[sim G4 framework|Framework Ideas (Seamus)]] ===