Difference between revisions of "Roadmap toward a decision for Bcal Readout"
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=== Roadmap toward a decision for Bcal Readout=== | === Roadmap toward a decision for Bcal Readout=== | ||
| − | Status and schedules can be found in the [ | + | Status and schedules can be found in the [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1196 report at the Jan collaboration meeting]. |
| − | #Technical specifications, already outlined in [ | + | #Technical specifications, already outlined in [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=795 GlueX-doc-795] |
#* [[Roadmap toward a decision for Bcal Readout#Silicon PM | SiPM tests are underway]] | #* [[Roadmap toward a decision for Bcal Readout#Silicon PM | SiPM tests are underway]] | ||
#* [[Roadmap toward a decision for Bcal Readout#Fine Mesh PMT | See various technical studies of alternative design]] | #* [[Roadmap toward a decision for Bcal Readout#Fine Mesh PMT | See various technical studies of alternative design]] | ||
| Line 28: | Line 28: | ||
# [[Private:SensL SiPMs | SensL SiPMs]] | # [[Private:SensL SiPMs | SensL SiPMs]] | ||
# [[Image:SiPM_PDEvsDR_A.pdf | Hamamatsu SiPMs first look 3/16/09]] | # [[Image:SiPM_PDEvsDR_A.pdf | Hamamatsu SiPMs first look 3/16/09]] | ||
| − | # [[http://www.jlab.org/Hall-D/reviews/Bcal_Readout_Jul09 Bcal Readout Review (July 21)] Recommendations | + | # [[http://www.jlab.org/Hall-D/halld_secure/reviews/Bcal_Readout_Jul09 Bcal Readout Review (July 21)] Recommendations |
| − | ## Develop a comprehensive test plan for | + | ## Develop a comprehensive test plan for the expected 10 units of SIPM assemblies from Hamamatsu and SensL, including the testing of long term stability and reliability, and operation at close to realistic (radiation) conditions. |
| − | ## | + | ## Make the choice of photo-sensor system for the BCAL and place an order only after obtaining and analyzing the results of the above tests. The Committee is aware that this could cause a few months delay of the fabrication/installation schedule, but considers the tests and analyses to be of higher value. |
| + | # [[Detailed plan for testing production SiPM units]] | ||
| + | # [[SiPM Radiation Hardness Test]] | ||
=== Fine Mesh PMT === | === Fine Mesh PMT === | ||
*[[Alternative readout | Alternative readout]] | *[[Alternative readout | Alternative readout]] | ||
| + | *[http://sales.hamamatsu.com/en/products/electron-tube-division/detectors/photomultiplier-modules/part-h6152-70.php# H6152-70 Assembly] Assembly for R5505 1" pmt | ||
| + | *[http://sales.hamamatsu.com/en/products/electron-tube-division/detectors/photomultiplier-modules/part-h8409-70.php# H8409-70 Assembly] Assembly for R7761 1.5" pmt | ||
| + | *[http://sales.hamamatsu.com/en/products/electron-tube-division/detectors/photomultiplier-modules/part-h6614-70.php# H6614-70 Assembly] Assembly for R5924 2" pmt | ||
| + | *[http://sales.hamamatsu.com/en/products/electron-tube-division/detectors/photomultiplier-modules/part-h8318-70.php# H8318-70 Assembly] Assembly for R6504 2.5" pmt | ||
=== Light Guides === | === Light Guides === | ||
| Line 39: | Line 45: | ||
=== Magnetic Field === | === Magnetic Field === | ||
| − | *[ | + | *[https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=912 Field at the location of pmts] |
Latest revision as of 16:53, 24 February 2017
Contents
Roadmap toward a decision for Bcal Readout
Status and schedules can be found in the report at the Jan collaboration meeting.
- Technical specifications, already outlined in GlueX-doc-795
- Geometry, especially related to acceptance gap between Bcal and Fcal. Detailed plan should be developed.
- Light guides and inactive material is different for the two options. We need to simulate the effect of each
- Precise configuration of light guides for FM pmts on the upstream end, where the field at the end of the Bcal exceeds 0.5 T. See light guides studies.
- Detail description of cables and electronics on each detector
- Granularity.
- Optimization of distribution between inner and outer detectors
- Which detectors should have discriminators and TDCs
- Study of signal splitting, choice of discriminator - has an impact on number of cables.
- Resolution
- Impact of dark rate on resolution
- Light collection
- Complete simulation studies for correct thresholds for the FM.
- Energy threshold for various assumed PDE and DR combinations.
- Studies of timing resolution. Realistic simulation for both photons and charged particles
- Resolution for various geometry options (mentioned above).
- Detailed B-field plots including dependence on B-field components
- Dynamic range required, especially for near pmt/small angle showers.
- Private:Readout Cost Estimates
Silicon PM
- SensL SiPMs
- File:SiPM PDEvsDR A.pdf
- [Bcal Readout Review (July 21) Recommendations
- Develop a comprehensive test plan for the expected 10 units of SIPM assemblies from Hamamatsu and SensL, including the testing of long term stability and reliability, and operation at close to realistic (radiation) conditions.
- Make the choice of photo-sensor system for the BCAL and place an order only after obtaining and analyzing the results of the above tests. The Committee is aware that this could cause a few months delay of the fabrication/installation schedule, but considers the tests and analyses to be of higher value.
- Detailed plan for testing production SiPM units
- SiPM Radiation Hardness Test
Fine Mesh PMT
- Alternative readout
- H6152-70 Assembly Assembly for R5505 1" pmt
- H8409-70 Assembly Assembly for R7761 1.5" pmt
- H6614-70 Assembly Assembly for R5924 2" pmt
- H8318-70 Assembly Assembly for R6504 2.5" pmt
