Difference between revisions of "PMT & Divider"
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* [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/HV1000V_900uA.docx Latest design of the divider (April 2021, 900 uA at 1 kV)] | * [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/HV1000V_900uA.docx Latest design of the divider (April 2021, 900 uA at 1 kV)] | ||
− | * [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/FCAL2_AMP.JPG Schematic view of the amplifier (2022) ][https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/FCAL2_Divider_2022.pdf] | + | * [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/FCAL2_AMP.JPG Schematic view of the amplifier (2022) ][https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/FCAL2_Divider_2022.pdf] (intermediate versions) |
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+ | * [https://halldweb.jlab.org/detectors/fcal2/dividers/fcal2_divider_final/FCAL2_Rev2_schematic.pdf Final version (2023)] | ||
'''[[Active Base Radiation Tests]]''' | '''[[Active Base Radiation Tests]]''' |
Latest revision as of 11:38, 28 November 2023
PMTs
- Hamamatsu R4125 PMT:
- Magnetic shielding
- TOSCA calculation (by Sasha Glamazdin)
- presentation
- (ppt file location /u/group/halld/Subsystems/HFCal/talk/Hybrid_FCal_shield.pptx)
- Directory with TOSCA results /u/group/halld/Subsystems/HFCal/.
PMT Active Base
Modified Active Bases (2020)
- Three active bases were modified by V.Popov. They were installed and testes using the CCAL
- (including resistor values for different amplifier gains)
- New modifications: (1) modify resistors to limit divider current below 1 mA (2) Increase voltages on first dynodes
- - New bases installed in the Hall
- Divider current after installation [1]
- - New bases installed in the Hall
- Schematic view of the amplifier (2022) [3] (intermediate versions)
Documents