Difference between revisions of "DIRC Software Overview"
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The latest version of MC samples which can be studied with this branch are located at: | The latest version of MC samples which can be studied with this branch are located at: | ||
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* LUTs: <code>/group/halld/Users/jrsteven/2018-dirc/dircsim-2018_08-ver01/</code> | * LUTs: <code>/group/halld/Users/jrsteven/2018-dirc/dircsim-2018_08-ver01/</code> | ||
| + | * Event samples: <code>/volatile/halld/home/jrsteven/2018-dirc/dircsim-2018_08-ver01/</code> | ||
| + | |||
| + | {| border="1" cellpadding="2" valign="top" style="text-align: center;" | ||
| + | !width="180"| Generator | ||
| + | !width="75"| Number of events (10<sup>6</sup>) | ||
| + | !width="300"| Settings | ||
| + | !width="300"| Planned usage | ||
| + | |- | ||
| + | | '''bggen''' || 100 || || General inclusive sample for many studies | ||
| + | |- | ||
| + | | '''gen_2pi_amp''' || 10 || ρ → π<sup>+</sup>π<sup>-</sup> || Pure sample of pions with relevant kinematics | ||
| + | |- | ||
| + | | '''gen_2k''' || 10 || φ → K<sup>+</sup>K<sup>-</sup> || Pure sample of kaons with relevant kinematics | ||
| + | |- | ||
| + | | '''k/pi p/m_p4_theata4''' || 0.01 || π<sup>+/-</sup> K<sup>+/-</sup> particle gun at p=4 GeV, theta=4 degrees, phi = -90 degrees || Single particle tests | ||
| + | |- | ||
| + | | '''k/pi p/m_flat''' || 0.1 || π<sup>+/-</sup> K<sup>+/-</sup> particle gun at p=[0.5,8.5] GeV, theta=[0,10] degrees, phi = [-180, 180] degrees || Single particle tests | ||
| + | |} | ||
== Analysis Scripts == | == Analysis Scripts == | ||
Revision as of 09:56, 17 August 2018
Contents
Software Packages and Setup
The software packages required to run DIRC simulation and reconstruction are a part of standard GlueX software deployment.
- Packages: hdds, halld_recon, halld_sim, hdgeant4, etc.
- For the 2018 commissioning period we are using a branch of these repositories: dirc_commissioning_2018
- Installation instructions and a list of steps to start generating simulation can be found in this README file
The latest version of MC samples which can be studied with this branch are located at:
- LUTs:
/group/halld/Users/jrsteven/2018-dirc/dircsim-2018_08-ver01/ - Event samples:
/volatile/halld/home/jrsteven/2018-dirc/dircsim-2018_08-ver01/
| Generator | Number of events (106) | Settings | Planned usage |
|---|---|---|---|
| bggen | 100 | General inclusive sample for many studies | |
| gen_2pi_amp | 10 | ρ → π+π- | Pure sample of pions with relevant kinematics |
| gen_2k | 10 | φ → K+K- | Pure sample of kaons with relevant kinematics |
| k/pi p/m_p4_theata4 | 0.01 | π+/- K+/- particle gun at p=4 GeV, theta=4 degrees, phi = -90 degrees | Single particle tests |
| k/pi p/m_flat | 0.1 | π+/- K+/- particle gun at p=[0.5,8.5] GeV, theta=[0,10] degrees, phi = [-180, 180] degrees | Single particle tests |
Analysis Scripts
- Analysis and calibration scripts should be located in
dirc/directory of hd_utilities
Translation table
- Initial decoder work ongoing by David
LUT algorithm documentation
- Writeup from Maria
Studies
A list of DIRC Software Tasks is maintained, which are the required tools necessary for analysis of the commissioning data. Below are some planned/ongoing studies to evaluate the commissioning data.
Mis-alignment effects
- Goal: Study qualitatively how mis-alignments may impact hit patterns and LUT reconstruction
- Identify likely mis-alignments and implement in alternative XML geometries as examples of what we may observe in the data
- Try using LUT from "as-built" geometry to see how the mis-alignments affect the commissioning observables
Final Alignment
- Goal: Optimize alignment parameters for positions and angles of all optical components using identified track samples
- Plan to use Bayesian optimization technique with FastDIRC algorithm (Cris/Yunjie)
- Closure test with MC by the end of the year?
- Possible tests using sub-samples for alignment procedure and validation
- Align optical box components using tracks from single bar, then test alignment with tracks from other bars
- Align all components using identified pion sample, then test alignment with identified kaon sample
