fcs:cepc:2017
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— | fcs:cepc:2017 [2024/07/01 21:25] (current) – created - external edit 127.0.0.1 | ||
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+ | ===== CEPC tracking studies ===== | ||
+ | |||
+ | This wiki describe track resolution studies using 2 designs with different outer tracker radius. | ||
+ | The plots are done assuming flat distribution of single muons in |y|<3. | ||
+ | |||
+ | ====== Tracker using B=3T and R=1.25m ====== | ||
+ | Here is a short description on how to check track resolution using [[http:// | ||
+ | The data are taken from [[http:// | ||
+ | |||
+ | |||
+ | Here are the steps to check the resolution using single muons. | ||
+ | You will need this script {{: | ||
+ | [[http:// | ||
+ | |||
+ | <code bash> | ||
+ | bash # | ||
+ | wget http:// | ||
+ | tar -zvxf jas4pp.tgz | ||
+ | source jas4pp/ | ||
+ | hs-get pgun_muon_eta3_pt150gev%rfull101 data 2 500 # get 500 files in 2 threads | ||
+ | # download the python script shown above and run it as | ||
+ | fpad cepc_track_resolution.py | ||
+ | </ | ||
+ | |||
+ | This script calculates the tracking resolution of this detector as shown below: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | Here is the script that does sigma(1/ | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | ====== Tracker using B=3T and R=1.8m ====== | ||
+ | |||
+ | A new CEPC-Si detector was created using B=3 and R=1.8m tracker, which can fits to the envelope of CEPC-ILD detector, | ||
+ | The new detector, called [[http:// | ||
+ | with modified tracker was used to create | ||
+ | [[http:// | ||
+ | |||
+ | |||
+ | The analysis of this data can be done exactly as before. The only difference is that you will need to download | ||
+ | the different dataset: | ||
+ | |||
+ | < | ||
+ | hs-get pgun_muon_eta3_pt150gev%rfull102 data 2 500 # get 500 files in 2 threads | ||
+ | </ | ||
+ | |||
+ | The track resolutions are shown in | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | Here is the tracking resolution for 1/pt: | ||
+ | |||
+ | |||
+ | {{: | ||
+ | |||
+ | The data file is {{ : | ||
+ | You can read jdat file in PyROOT using this simple macro {{ : | ||
+ | |||
+ | |||
+ | ====== Tracking in Barrel and Endcap ====== | ||
+ | |||
+ | ===== pT resolution ===== | ||
+ | |||
+ | As before, this was done using B=3 and R=1.8m tracker and [[http:// | ||
+ | |||
+ | {{: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Data files are {{: | ||
+ | |||
+ | The results were created with the scripts {{: | ||
+ | |||
+ | ===== d0 and z0 resolution ===== | ||
+ | |||
+ | {{: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | The files with data are: | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
+ | * {{ : | ||
+ | * {{ : | ||
+ | |||
+ | ===== Some physics plots ===== | ||
+ | |||
+ | Here are a few plots illustrating physics performances. The figures have been done using fully identified muons and electrons (PandoraPFO). The following samples (tag rfull102) have been used: | ||
+ | |||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | |||
+ | You can get the data (for Z0+Higgs-> | ||
+ | <code bash> | ||
+ | bash # | ||
+ | wget http:// | ||
+ | source hs-toolkit/ | ||
+ | hs-get gev250ee_pythia8_zhiggs_nunumumu | ||
+ | hs-get gev250ee_pythia8_zhiggs_nunumumu%rfull102 # download SLCIO files for rfull102 tag | ||
+ | </ | ||
+ | |||
+ | |||
+ | |||
+ | See [[http:// | ||
+ | |||
+ | |||
+ | Now you can convert ProMC data to STDHEP or LCIO (MCParticle) with full simulations using promc2stdhep or promc2lcio converters as discussed in [[hepsim: | ||
+ | |||
+ | |||
+ | Here are a few plots that show the performance using [[http:// | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Here is the plot for [[http:// | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Here is the plot for [[http:// | ||
+ | |||
+ | {{: | ||
+ | |||
+ | --- // | ||
+ | | ||
+ | |||
+ | |||
fcs/cepc/2017.txt · Last modified: 2024/07/01 21:25 by 127.0.0.1