Minutes of the forward endcap EMC eZuce SRN meeting, 17th of February 2017, 14:00-15:15
Presence:
Basel: Werner
Bochum: Cathrina, Claudius, Matthias, Malte, Miriam, Tom, Tobias T.
Bonn: Christoph and more...
Groningen: Myroslav
Stochholm: -
Uppsala: -
Giessen: Hans and more...
GSI: -
Patch Panel Board (aka Schmidt Board):
Connector for
I2C
bus chosen: "telecommunications type"
Main
I2C
dissipation power source: termination resisitors
Problem: LV connection - no feasible connector found (size), idea of breakout boards for LV distribution
LP cabling: rad hardness, halogen free, shielding(?)
Skip shielding of LV inside forward endcap in order to gain space and number of suitable cable types?
We will meet with some people from Bonn and Bochum to discuss those cabling issues in detail apart from forward endcap meeting
Serial Adapter Chips (GSI):
Chips delivery expected end of next week
Bonding to be done in Bonn (PI/Dietsche)
ADC Cooling Crates:
Design ready (Myroslav)
Awaiting finished backplane design (Pawel)
Shaping Time/Pile-Up Recovery Studies (Malte):
"Small" pulses (from cosmics in horizontally suspended crystal) recorded for waveform check:
Two groups of pulse shapes:
Shape like the one of 'large' pulses
Shape showing a slower compont 'on top' of steep rise
Not seen with large pulses (as coming from cosmics in vertically suspended crystals), however, not explicitly looked for...
Origin not clear: hum, Cherenkov light, hadronic showers?
Fraction of about 10 percent of pulses recorded
Repeat measurement with 2nd crystal and/or plastics in coincidence
Plot pulse height histos for both pulse shape groups
--
ThomasHeld
- 17 Feb 2017
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2017-02-20 - 10:19
MalteAlbrecht
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2017-02-20,
MalteAlbrecht
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