|Research Area:||High Energy Physics|
|Institute:||Institute of High Energy Physics, CAS|
BES is a general-purpose detector running on BEPC (Beijing Electron Positron Collider), and was put into construction in 1984 and production in 1989. Major upgrades were applied on both BEPC and BES between 1995 and 1998, hence BEPC is upgraded to BEPCII, and BES is to BESII and BESIII. BESIII is the current detector running on BEPCII. BES is the first particle physic experiment facility designed and implemented by China itself and comprises multiple sub detectors. As a detector, BES is about 6m in length, 7m in both height and width, and weigh about 500tons. BESIII adopts a great many of advanced detector technologies from international wide, and is like the “eye” of BEPCII to capture and measure the sub particles generated from collisions of e+ and e- to study the basic unit and interaction between particles of matter at the microstructure level. BESIII is the only detector in the world which runs at between 2 and 5Gev energy region and about 200 physicists from 27 worldwide research institutes have joined the BESIII collaboration to conduct research on physics theories like strong interactions and weak interactions in tau-charm energy region.
Like other HEP experiment computation, there are generally 3 kinds of computation for BESIII:
Simulation Computing (also called Monte Carlo Computing): to simulate the collisions happening inside the detector.
Reconstruction Computing: Transfer raw data captured from the detector or generated by Simulation into data with physical meanings.
Analysis Computing: Test against physical theories based on the reconstructed data.
Among all these 3 computations, BESIII Simulation Computing is the most suitable for Volunteer Computing because it needs very limited input data. However, the software which is used to run BESIII simulation (BOSS, BES Offline Software) is very platform dependent, so virtual machine technologies need to be used to run BESIII simulation computing jobs on BOINC.