Difference between revisions of "Feb 9, 2011 SiPM Electrical and Cooling"
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(Created page with "== Action Items from previous meetings == # Populate interface cards to the ADC (Chris) # Complete 3 remaining boards for SiPM testing (Chris) # Determine if swapped bias pins w...") |
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# Complete 3 remaining boards for SiPM testing (Chris) | # Complete 3 remaining boards for SiPM testing (Chris) | ||
# Determine if swapped bias pins was accidental or in design (Chris) | # Determine if swapped bias pins was accidental or in design (Chris) | ||
− | # | + | # Make a second SiPM extraction tool for USM (Jim and Scot) |
− | + | ||
− | + | ||
== Tentative Agenda == | == Tentative Agenda == | ||
Line 22: | Line 20: | ||
== Minutes == | == Minutes == | ||
− | ''Attending: | + | ''Attending: Jack,, Carl, Scot, Chris, Yi, John, Elton, Jim, Eugene |
+ | |||
+ | # Announcements | ||
+ | # Action Items | ||
+ | # Schedule, reporting, and manpower (Elton) | ||
+ | # SiPM production testing (everyone) | ||
+ | ## OSP (Carl) | ||
+ | ##* OSP submitted. Bert will take the next step | ||
+ | ##* Ordered micro-switches to interlock box with power supply | ||
+ | ##* Ordered anti-static straps, flash lights | ||
+ | ##* Scot: Added grounding wire for the support plate in the box. Discussion on where to attach. Suggestion to use the VME crate ground, but test with/without connection. | ||
+ | ## Software (YI) | ||
+ | ##* Control software is ready | ||
+ | ##* Analysis software is advancing to use the JLab farm | ||
+ | ## Hardware setup (Yi) | ||
+ | ##* Need additional low voltage cables | ||
+ | ##* Once complete, we will need to establish training for the setup | ||
+ | ##* Recheck light uniformity | ||
+ | ##* Carl: The light uniformity left-right is within 1% | ||
+ | ##* The top two rows are about 4% lower than the middle two | ||
+ | ##* Preamp 10 Ohm output resistor has been replaced by a 0.1 microF capacitor to eliminate the DC offset | ||
+ | ## Test operating temperature | ||
+ | ##* Presently operating at 9 deg C | ||
+ | ##* Plan: test at one temperature first and then repeat at second temperature to establish temp dependence. | ||
+ | ##* Test at lowest temperature possible without condensation. There is concern that 5 deg may be too low. | ||
+ | ##* Carl will buy water absorbing material for the box. | ||
+ | # Mechanical assembly (Scot) | ||
+ | #* Chemically polished light guides | ||
+ | #* Some samples sizes missing | ||
+ | #* Proceed with gluing tests using best glue to date and one new ne | ||
+ | # Mechanical (Jim) | ||
+ | #* Will order humidity sensor | ||
+ | #* Parts for gluing fixture should be in soon | ||
+ | # Mechanical drawings (Chuck) | ||
+ | # Temperature compensation (Jack) | ||
+ | #* Parameters for thermistor selected and large order submitted plus order for mini-Bcal | ||
+ | # Preamp-summing (Fernando/Chris) | ||
+ | #* MPPC compact design boards built up (and more on the way) | ||
+ | #* Boards for PS completed | ||
+ | #* Thermistor boards done | ||
+ | #* U-boards waiting Fernando for final test. Components are in hand. First 80 will be done in house using Jim's fixture. | ||
+ | # SiPM testing (Ivan) |
Latest revision as of 12:58, 10 February 2012
Action Items from previous meetings
- Populate interface cards to the ADC (Chris)
- Complete 3 remaining boards for SiPM testing (Chris)
- Determine if swapped bias pins was accidental or in design (Chris)
- Make a second SiPM extraction tool for USM (Jim and Scot)
Tentative Agenda
- Announcements
- Action Items
- Schedule, reporting, and manpower (Elton)
- SiPM production testing (everyone)
- Mechanical assembly (Scot)
- Mechanical (Jim)
- Mechanical drawings (Chuck)
- Temperature compensation (Jack)
- Preamp-summing (Fernando/Chris)
- SiPM testing (Ivan)
Minutes
Attending: Jack,, Carl, Scot, Chris, Yi, John, Elton, Jim, Eugene
- Announcements
- Action Items
- Schedule, reporting, and manpower (Elton)
- SiPM production testing (everyone)
- OSP (Carl)
- OSP submitted. Bert will take the next step
- Ordered micro-switches to interlock box with power supply
- Ordered anti-static straps, flash lights
- Scot: Added grounding wire for the support plate in the box. Discussion on where to attach. Suggestion to use the VME crate ground, but test with/without connection.
- Software (YI)
- Control software is ready
- Analysis software is advancing to use the JLab farm
- Hardware setup (Yi)
- Need additional low voltage cables
- Once complete, we will need to establish training for the setup
- Recheck light uniformity
- Carl: The light uniformity left-right is within 1%
- The top two rows are about 4% lower than the middle two
- Preamp 10 Ohm output resistor has been replaced by a 0.1 microF capacitor to eliminate the DC offset
- Test operating temperature
- Presently operating at 9 deg C
- Plan: test at one temperature first and then repeat at second temperature to establish temp dependence.
- Test at lowest temperature possible without condensation. There is concern that 5 deg may be too low.
- Carl will buy water absorbing material for the box.
- OSP (Carl)
- Mechanical assembly (Scot)
- Chemically polished light guides
- Some samples sizes missing
- Proceed with gluing tests using best glue to date and one new ne
- Mechanical (Jim)
- Will order humidity sensor
- Parts for gluing fixture should be in soon
- Mechanical drawings (Chuck)
- Temperature compensation (Jack)
- Parameters for thermistor selected and large order submitted plus order for mini-Bcal
- Preamp-summing (Fernando/Chris)
- MPPC compact design boards built up (and more on the way)
- Boards for PS completed
- Thermistor boards done
- U-boards waiting Fernando for final test. Components are in hand. First 80 will be done in house using Jim's fixture.
- SiPM testing (Ivan)