Difference between revisions of "PMT & Divider"
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+ | === PMTs === | ||
+ | |||
*'''Hamamatsu R4125 PMT:''' | *'''Hamamatsu R4125 PMT:''' | ||
::[https://halldweb.jlab.org/wiki-private/images/b/b5/R4125_specs.pdf Specs] | ::[https://halldweb.jlab.org/wiki-private/images/b/b5/R4125_specs.pdf Specs] | ||
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::[https://halldweb.jlab.org/wiki-private/images/e/ec/R4125_drawing.pdf socket] | ::[https://halldweb.jlab.org/wiki-private/images/e/ec/R4125_drawing.pdf socket] | ||
::[https://halldweb.jlab.org/detectors/CompCal/PMT/R4125_photo.pdf Dynode location] | ::[https://halldweb.jlab.org/detectors/CompCal/PMT/R4125_photo.pdf Dynode location] | ||
+ | ::[https://halldweb.jlab.org/detectors/fcal2/pmt/High_energy_PMT_TPMZ0003E.pdf Hamamatsu PMT manual] | ||
+ | *'''Magnetic shielding''' | ||
+ | ::* '''TOSCA calculation (by Sasha Glamazdin)''' | ||
+ | ::::[https://halldweb.jlab.org/talks/2018/Hybrid_FCal_shield.pdf presentation] | ||
+ | ::::(ppt file location /u/group/halld/Subsystems/HFCal/talk/Hybrid_FCal_shield.pptx) | ||
+ | :::: Directory with TOSCA results /u/group/halld/Subsystems/HFCal/. | ||
− | *[https://halldweb.jlab.org/wiki-private/index.php/ | + | ::* [https://halldweb.jlab.org/DocDB/0041/004166/003/fcal_shielding.pdf '''Magnetic field measurements'''] |
+ | :::: [https://halldweb.jlab.org/wiki-private/index.php/FCAL_insert_counter_prototype Prototype of the PMT housing (magnetic field shielding)] | ||
+ | *[https://halldweb.jlab.org/wiki-private/index.php/PMT_testing '''PMT testing for Compton Calorimeter (2018)'''] | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | + | *[https://halldweb.jlab.org/wiki-private/index.php/PMT_for_FCAL_insert '''Procurement of PMTs '''] | |
− | *[https://halldweb.jlab.org/ | + | |
+ | |||
+ | === PMT Active Base === | ||
+ | |||
+ | |||
+ | *[https://halldweb.jlab.org/detectors/fcal2/pmt/NSS2012_JLAB.pdf New Active PMT Base for PbWO4 (Popov, H. Mkrtchyan, presentation at IEEE, Nov 2012)] | ||
+ | |||
+ | *[https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=3998 Linearity measurements with CCAL] | ||
+ | |||
+ | *[https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=3590 Test performance of electronics using a 3x3 PWO prototype] | ||
+ | |||
+ | *[https://halldweb.jlab.org/DocDB/0032/003272/001/NPS_COMCAL_Readout.pdf Active base performance at high rate] | ||
+ | |||
+ | |||
+ | '''Modified Active Bases (2020)''' | ||
+ | |||
+ | *[https://logbooks.jlab.org/entry/3780745 Test of modified active bases installed on CCAL (3 modules)] | ||
+ | :: Three active bases were modified by V.Popov. They were installed and testes using the CCAL | ||
+ | |||
+ | *[https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4361 Estimates of the PMT Anode Current of the CCAL (FCAL2) Modules] | ||
+ | |||
+ | * [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) | ||
+ | |||
+ | * New modifications: (1) modify resistors to limit divider current below 1 mA (2) Increase voltages on first dynodes | ||
+ | |||
+ | :: - [https://logbooks.jlab.org/entry/3844449 New bases installed in the Hall] | ||
+ | ::: Divider current after installation [https://logbooks.jlab.org/entry/3844569] | ||
+ | |||
+ | :: - [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/Test_Vlads_new_resistor_values.pdf Corresponding voltages] | ||
+ | |||
+ | :: - [https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/New_DIV.pdf Resistor values][https://halldweb.jlab.org/detectors/fcal2/dividers/vlad_modify/divider_resistors.xlsx ] | ||
+ | |||
+ | * [https://halldweb.jlab.org/DocDB/0049/004981/004/amp_lin.pdf Linearity test of the modified amplifier (gain 3)] | ||
+ | |||
+ | * [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] (intermediate versions) | ||
+ | |||
+ | * [https://halldweb.jlab.org/detectors/fcal2/dividers/fcal2_divider_final/FCAL2_Rev2_schematic.pdf Final version (2023)] | ||
+ | |||
+ | '''[[Active Base Radiation Tests]]''' | ||
+ | |||
+ | '''Documents''' | ||
+ | |||
+ | :: [https://halldweb.jlab.org/detectors/fcal2/pmt/Pub-97-092.pdf PMT lifetime studies at FNAL] |
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