Difference between revisions of "PQB Meeting January 17, 2019"
Jump to navigation
Jump to search
| (6 intermediate revisions by 2 users not shown) | |||
| Line 9: | Line 9: | ||
'''Agenda:''' | '''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 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) |
| − | :Measure Aq widths on charge asymmetry from freshly activated photocathode (1h, FC1) | + | ::Measure Aq widths on charge asymmetry from freshly activated photocathode (1h, FC1) |
| − | :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) |
| − | :Test helicity magnets (4h, ILD) | + | ::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 | ||
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