Difference between revisions of "PMT & Divider"
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* [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/Comcal_with_Vlad_mods.pdf Schematic of the modified active base] | * [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/Comcal_with_Vlad_mods.pdf Schematic of the modified active base] | ||
:: (including resistor values for different amplifier gains) | :: (including resistor values for different amplifier gains) | ||
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| + | * New modifications: (1) modify resistors to limit divider current below 1 mA (2) Increase voltages on first dynodes | ||
| + | :: - [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/New_DIV.pdf Resistor values] | ||
| + | :: - [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/Test_Vlads_new_resistor_values.pdf Corresponding voltages] | ||
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'''Documents''' | '''Documents''' | ||
:: [https://halldweb.jlab.org/detectors/fcal2/pmt/Pub-97-092.pdf PMT lifetime studies at FNAL] | :: [https://halldweb.jlab.org/detectors/fcal2/pmt/Pub-97-092.pdf PMT lifetime studies at FNAL] | ||
Revision as of 11:54, 9 September 2020
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
Documents
