Difference between revisions of "February 16, 2020"
From GlueXWiki
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* [https://halldweb.jlab.org/detectors/fcal2/dividers/design_meeting_2_16_2021/fcal_amp_lin.pdf Amplifier linearity tests] | * [https://halldweb.jlab.org/detectors/fcal2/dividers/design_meeting_2_16_2021/fcal_amp_lin.pdf Amplifier linearity tests] | ||
| − | |||
| − | |||
| − | * FCAL insert | + | '''CCAL discussion''' |
| − | :: Do we need to modify the amplifier ? | + | |
| + | * Order (refurbish) dividers, use bypassed amplifier (and gain of 3) | ||
| + | |||
| + | |||
| + | |||
| + | '''FCAL insert''' | ||
| + | |||
| + | * expected anode current < 20 uA in the inner most FCAL insert layer; current drops rapidly with the radial distance | ||
| + | ::: (used CCAL in GlueX runs at high luminosity) | ||
| + | * likely do not need an amplifier in most FCAL insert layers | ||
| + | |||
| + | * Do we need to modify the amplifier ? | ||
| + | :: - modify the active base | ||
| + | :: - redesign an amplifier, use additional power line to supply the on-board amplifier | ||
| + | :: - use external amplifiers (position in the FCAL dark room) | ||
| + | :: - do not modify the active base, apply non-linearity corrections | ||
Latest revision as of 12:17, 15 February 2021
CCAL discussion
- Order (refurbish) dividers, use bypassed amplifier (and gain of 3)
FCAL insert
- expected anode current < 20 uA in the inner most FCAL insert layer; current drops rapidly with the radial distance
- (used CCAL in GlueX runs at high luminosity)
- likely do not need an amplifier in most FCAL insert layers
- Do we need to modify the amplifier ?
- - modify the active base
- - redesign an amplifier, use additional power line to supply the on-board amplifier
- - use external amplifiers (position in the FCAL dark room)
- - do not modify the active base, apply non-linearity corrections
