Difference between revisions of "September 9, 2019 FCAL Insert Design Meeting"
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(Created page with "== Meeting Time and Place == Thursday August 15 3pm At Jefferson Lab, room TED 2504 * Present - Sasha Somov, Josh Crafts, Vlad, Eugene, Stephanie, Keith Harding, Tim == Age...") |
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== Agenda == | == Agenda == | ||
− | * Discuss 40x40 crystal assembly | + | * Discuss 40x40 crystal assembly with 19 Lead glass modules around |
− | ** 40x40 crystal matrix | + | ** Crystals move to 12.5 cm from US face of lead glass |
+ | ** 40x40 crystal matrix starts with shim to be able to go to 32x32 fairly easy. | ||
** Decision to pre-measure stacks of crystals and the existing FCAL to determine bottom row offsets | ** Decision to pre-measure stacks of crystals and the existing FCAL to determine bottom row offsets | ||
− | |||
* Discuss installing Rohacel US of crystals to fill hole and support the lead glass blocks | * Discuss installing Rohacel US of crystals to fill hole and support the lead glass blocks | ||
** Rohacel properties [[Media:Rohacel cut sheet.pdf]] | ** Rohacel properties [[Media:Rohacel cut sheet.pdf]] | ||
Line 16: | Line 16: | ||
** http://www.phenix.bnl.gov/WWW/publish/bosze/phenixnote272/radiation.html (same data) | ** http://www.phenix.bnl.gov/WWW/publish/bosze/phenixnote272/radiation.html (same data) | ||
* Discuss Tungsten absorber | * Discuss Tungsten absorber | ||
− | ** | + | ** Cover 1.5 crystals ok? |
− | ** | + | ** Rohacell supported |
* Monitoring System | * Monitoring System | ||
− | ** | + | ** Use Acrylic sheet, how thick? |
− | * How | + | ** How to attach fibers? |
− | * | + | * Cooling of blocks - 2.1 KW needed |
− | ** | + | ** 2 Chillers like those used for BCAL ($16K ea) |
− | * | + | ** 4 water to air Heat exchangers around crystal area |
− | ** | + | ** potted copper tube into aluminum blocks |
− | ** Cooling | + | ** Cooling of inner tube - removeable plate |
− | ** | + | * electronics patch panels DS of crystal pmts |
+ | * Brass strap soldering progress | ||
== Minutes == | == Minutes == | ||
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== Action items == | == Action items == | ||
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Revision as of 11:07, 9 September 2019
Meeting Time and Place
Thursday August 15 3pm At Jefferson Lab, room TED 2504
- Present - Sasha Somov, Josh Crafts, Vlad, Eugene, Stephanie, Keith Harding, Tim
Agenda
- Discuss 40x40 crystal assembly with 19 Lead glass modules around
- Crystals move to 12.5 cm from US face of lead glass
- 40x40 crystal matrix starts with shim to be able to go to 32x32 fairly easy.
- Decision to pre-measure stacks of crystals and the existing FCAL to determine bottom row offsets
- Discuss installing Rohacel US of crystals to fill hole and support the lead glass blocks
- Rohacel properties Media:Rohacel cut sheet.pdf
- Radiation Hardness https://p25ext.lanl.gov/phenix/mvd/notes/1997/PHENIX-MVD-97-5/radiation.html
- http://www.phenix.bnl.gov/WWW/publish/bosze/phenixnote272/radiation.html (same data)
- Discuss Tungsten absorber
- Cover 1.5 crystals ok?
- Rohacell supported
- Monitoring System
- Use Acrylic sheet, how thick?
- How to attach fibers?
- Cooling of blocks - 2.1 KW needed
- 2 Chillers like those used for BCAL ($16K ea)
- 4 water to air Heat exchangers around crystal area
- potted copper tube into aluminum blocks
- Cooling of inner tube - removeable plate
- electronics patch panels DS of crystal pmts
- Brass strap soldering progress