Difference between revisions of "Bubble Chamber Meeting Wednesday August 5, 2015"
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* Alternatively use an electro-optic shutter (>1000:1 extinction, but fast rise/fall times <5ns) | * Alternatively use an electro-optic shutter (>1000:1 extinction, but fast rise/fall times <5ns) | ||
** repurposes cell in optical path, so more invasive and more work installing HV driver, control circuit) | ** repurposes cell in optical path, so more invasive and more work installing HV driver, control circuit) | ||
+ | |||
+ | 3. Proposed run schedule week of August 10 | ||
+ | |||
+ | * Tue, August 11: Turn on gun, commission new lasers, beam to FC1 (Joe Grames). | ||
+ | * Wed, August 12: Beam to FC2 and 5D dump (Yan, Riad). | ||
+ | * Thursday, August 13: Check beam optics to 5D (Chris). Measure beam energy (Riad). | ||
+ | * Friday, August 14: Mott and photocathode Analyzing power (Joe ,Riad). | ||
+ | * Saturday, August 15: Measure beam energy and beam current (Riad). |
Revision as of 15:34, 5 August 2015
We will meet in TL 2221 on Wednesday August 5 at 3:30 pm EST.
For those calling in we'll use the Blue Jeans [1] audio conference system.
Phone number: 1-888-240-2560 Meeting ID: 3528502673# Moderator Passcode: 5978# Meeting URL: http://bluejeans.com/3528502673
Agenda:
1- Bubble Chamber progress at JLab
2- Laser Shuttering
- Would like to use a mechanical shutter (100% extinction)
- John Hansknecht will build a control box that uses TLL signal on BNC cable (TTL=high=close=beam OFF, TLL=low=open=beam ON)
- LST400: on-hand, time to open (~30ms), time to close (~30ms), large aperture 8mm
- LST202: purchase, time to open (~1.3ms), time to close (~1.5ms), small aperture 2.3mm (recommend <1mm beam)
- Alternatively use an electro-optic shutter (>1000:1 extinction, but fast rise/fall times <5ns)
- repurposes cell in optical path, so more invasive and more work installing HV driver, control circuit)
3. Proposed run schedule week of August 10
- Tue, August 11: Turn on gun, commission new lasers, beam to FC1 (Joe Grames).
- Wed, August 12: Beam to FC2 and 5D dump (Yan, Riad).
- Thursday, August 13: Check beam optics to 5D (Chris). Measure beam energy (Riad).
- Friday, August 14: Mott and photocathode Analyzing power (Joe ,Riad).
- Saturday, August 15: Measure beam energy and beam current (Riad).