Difference between revisions of "PQB Meeting January 17, 2019"
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| Line 9: | Line 9: | ||
'''Agenda:''' | '''Agenda:''' | ||
| − | 1- RTP cell installation in 2019 Winter SAD | + | 1- RTP cell installation in 2019 Winter SAD: |
| + | |||
;Installation Summary | ;Installation Summary | ||
| + | :: Hall A IA disconnected, Hall B/C IA connected | ||
;Upcoming Beam Study Opportunities | ;Upcoming Beam Study Opportunities | ||
| − | |||
::Measure Hall B polarization at Mott (2h, FC2) | ::Measure Hall B polarization at Mott (2h, FC2) | ||
::Measure Hall B charge asymmetry before/after chopper, set S2/RHWP for IN/OUT, compare Mott/Parity DAQs BCM0L02 (2h, FC2) | ::Measure Hall B charge asymmetry before/after chopper, set S2/RHWP for IN/OUT, compare Mott/Parity DAQs BCM0L02 (2h, FC2) | ||
| Line 19: | Line 20: | ||
::Test RTP position difference control (8h, FC2) | ::Test RTP position difference control (8h, FC2) | ||
::Study etalon effect vs. pulse shape (8h, FC1) | ::Study etalon effect vs. pulse shape (8h, FC1) | ||
| + | ::Charge asymmetry pickup studies w/ PC off (2h, stable beam) | ||
::Test helicity magnets (4h, ILD) | ::Test helicity magnets (4h, ILD) | ||
;Future Developments | ;Future Developments | ||
| − | :DAC (16 bit, | + | :DAC (16 bit, 10 V) |
| − | ::Riad, are you concerned about noise on DAC signal? | + | ::Riad, are you concerned about noise on DAC signal? |
::John suggests we can configure RTP DAC to be 0-5V (or we can clamp DAC) | ::John suggests we can configure RTP DAC to be 0-5V (or we can clamp DAC) | ||
:PS | :PS | ||
| Line 43: | Line 45: | ||
:: Consider inverting remote vertical driver to retain spring force | :: Consider inverting remote vertical driver to retain spring force | ||
| − | + | ;New RTP EDM screen | |
| − | + | 2- 2019 CEBAF Schedule | |
| − | : Spring run (now...April 7) | + | : Spring run (now... April 7) |
: SAD Bubble run | : SAD Bubble run | ||
:: Installation April 8-15 | :: Installation April 8-15 | ||
| Line 54: | Line 56: | ||
: PREX Run (Jun 3 - Aug 11) | : PREX Run (Jun 3 - Aug 11) | ||
: SAD (Aug 12 - Oct 24) | : SAD (Aug 12 - Oct 24) | ||
| − | :: install | + | :: install 200 kV electrode, commission |
Latest revision as of 14:56, 21 January 2019
We will meet in TEDF 2559 Thursday January 17 at 4:00 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# Meeting URL: http://bluejeans.com/3528502673
Agenda:
1- RTP cell installation in 2019 Winter SAD:
- Installation Summary
-
- Hall A IA disconnected, Hall B/C IA connected
- Upcoming Beam Study Opportunities
-
- Measure Hall B polarization at Mott (2h, FC2)
- Measure Hall B charge asymmetry before/after chopper, set S2/RHWP for IN/OUT, compare Mott/Parity DAQs BCM0L02 (2h, FC2)
- Measure Aq widths on charge asymmetry from freshly activated photocathode (1h, FC1)
- Test RTP position difference control (8h, FC2)
- Study etalon effect vs. pulse shape (8h, FC1)
- Charge asymmetry pickup studies w/ PC off (2h, stable beam)
- Test helicity magnets (4h, ILD)
- Future Developments
- DAC (16 bit, 10 V)
- Riad, are you concerned about noise on DAC signal?
- John suggests we can configure RTP DAC to be 0-5V (or we can clamp DAC)
- PS
- John suggests analog isolation at PS input
- Ensure internals are isolated, so no worries if chassis grounded
- DAC inputs only (no POTS)
- Re-use same HV blocks in present system
- Longer high voltage cables
- Dragon Switches
- New board beside mount, retain short cable lengths
- Incorporate dragon driver on to board (rather than separate)
- Incorporate two diodes w/ adjustable voltage (like present driver), use clear panel or consider photodiodes to electrical to see all at once
- Incorporate RC time constant, by the cell
- Quick connects from cell to driver + a ground (8+1) possibly safe banana plug
- 2nd Cell
- Asked Raicol if possible for longer or face cut crystals
- Most parts arrived, will unpack at UITF laser room, see what we're missing
- Install thorlabs driver on new PC
- Consider inverting remote vertical driver to retain spring force
- New RTP EDM screen
2- 2019 CEBAF Schedule
- Spring run (now... April 7)
- SAD Bubble run
- Installation April 8-15
- Run April 16-30
- SAD Laser Room opportunity (May 1 - Jun 2)
- PREX Run (Jun 3 - Aug 11)
- SAD (Aug 12 - Oct 24)
- install 200 kV electrode, commission