Difference between revisions of "Wednesday, September 6, 2017"
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* [https://hallcweb.jlab.org/DocDB/0008/000889/001/Live_time.pdf Live Time Studies] - Zafar Ahmed | * [https://hallcweb.jlab.org/DocDB/0008/000889/001/Live_time.pdf Live Time Studies] - Zafar Ahmed | ||
* [https://hallcweb.jlab.org/doc-private/ShowDocument?docid=928 Heepcheck Studies] - Samip Basnet | * [https://hallcweb.jlab.org/doc-private/ShowDocument?docid=928 Heepcheck Studies] - Samip Basnet | ||
| + | * [https://hallcweb.jlab.org/DocDB/0009/000919/001/tuesday_nov21_abishek.pdf Heepcheck scripts] - Abishek Karki | ||
== Minutes == | == Minutes == | ||
Latest revision as of 14:05, 21 November 2017
Meeting Information
- Location CC L210A, 11 am
- DocDB
Blue Jeans Connection Information
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- +1.408.740.7256 (US)
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- Press #
Agenda
- Commissioning plan updates from detector systems
- Status update from detector owners, calibrations, efficiencies, etc.
- Review systems owners and update information
- Address system specific points of interest for the Fall 2017 run
- Precision Scaling of Spectrometer Optics - Dave Mack
- SHMS Q2 non-linearity characterization - Holly Szumila-Vance
- Study of Effects of SHMS Magnet Reproducility on Reconstruction Using Single Arm Monte Carlo - Mark Jones
- EDTM Studies - Carlos Yero
- Live Time Studies - Zafar Ahmed
- Heepcheck Studies - Samip Basnet
- Heepcheck scripts - Abishek Karki
Minutes
SHMS Optics
- Dave showed some slides
- He showed his studies on the scaling of spectrometer tunes
- The quads will be set via current while utilizing supplemental information from Hall probes
- It has been determined that they cannot make accurate absolute field measurements to compare to model as a result of the high field gradient
- Outlook for setting up the precision tool looks rather promising
- Holly showed some slides
- She reported on her studies of the SHMS Q2 non-linearity corrections
- Mark Jones will provide a detailed data set for the HB
- The studies from Q2 look good
- The plan moving forward is to study Q1 in a similar fashion
- Mark showed some slides
- He showed his studies regarding the Reproducibility of SHMS magnets tested using COSY and mc-single-arm
- There was previously a mis-match between the order of the forward transport matrix as compared to the fitted matrix reconstruction, this haws since been fixed
- He showed a plethora of plots regarding known changes in the MC which is unknown to the analysis
- These studies were done for Q1, Q2, Q3, and HB
Trigger/DAQ
- Ahmed showed some slides regarding the preliminary work on dead time measurements
- The primary aim of the study was to determine if all the individual hodoscope PMT’s were showing reasonable results
- Carlos showed some slides regarding his EDTM studies
- He has been working on understanding the EDTM with Eric, Mark, and Brad
- There is a lot of peculiarities at the moment that are not understood
- The work is ongoing
- The SHMS scalers are not properly synced at the moment although the readout HMS is
- This could explain the oddities in the dead time measurements
- Once the long busy with the HMS is fixed a more comprehensive study can be conducted
SHMS
Hodoscopes
- Simona made some comments regarding the status of the quartz plane
- The SHMS tubes will be shipped soon
- The manufacturers fabricated 40 with the expectation that 32 should meet specs
- They will perform a partial shipment
- The fabrication of the cookies are consistently good with 50 um thickness
- A report will be prepared for next meeting
