NPS Subsystems
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NPS Layout
- NPS detector carriage assembly (2021)
- NPS layout images (2019)
- Initial cabling evaluation (2016)
- Beam pipe considerations (2013)
NPS Magnet
- NPS Sweeper Magnet and LCW Parameters (posted: 06/17/2021)
- Magnet Power Supply requirements:
- PSU with current greater than 1,100A for some overhead
- No need for a polarity switch, either for the run or for testing. Simple enough to mechanically swap the leads if needed for testing
- Assembly (2018-2019)
- Photo 1 (March 2019)
- Construction updates
- March 2017
- Main coil (November 2017)
- Background studies (2016)
- Vertical vs horizontal field
- Effect of field on PMTs
- Shielding concept
- Fringe field considerations (2016)
- Summary impact on HMS optics
- Minimum aperture layout (2016)
- Initial calculations (2015)
Calorimeter
- Frame
- Crystals
- PMTs and HV dividers
- Socket modification for 100 articles (2017)
- Tests with laser, long cable runs, fADC (2017)
- High Voltage cables fabrication and testing
- CAEN HV system testing
- NPS prototype studies
- 3x3 prototype report (2019)
- Updates from test run and calibrations (Spring 2018)
- 12x12 array (NPS prototype/ComCal) - password required
- Initial design concepts LMS and Curing and 3x3 prototype (2013-2014)
- Initial component studies
- Background radiation dose at calorimeter (2016)
- Crystal temperature dependence (2015)
- Irradiation crystals at JLab,Idaho, and Caltech (2014-2015)
- LED studies - PMT sensitivity (2014)
DAQ and Trigger
- Initial equipment count and rate estimates (2017)
- VTP event format description: [1]
Controls
- Control and monitoring screens development
- Interlock system
Data Analysis
Monte Carlo
- NPS Geant4 simulation for Hall C DVCS - GitHub: use DVCS_evt_gen/.
- Setting Up ROOT (and Geant4) Development Environment on Linux with Eclipse IDE, reach out with questions to Petr Stepanov
Experiments
- WACS (E12-14-003, E12-14-005)
- TCS (C12-18-005)