PQB Meeting December 6, 2018

From Ciswikidb
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

We will meet in TEDF 2559 Thursday December 6 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:

  • optics spares (crystals/mounts)
The optical mounts have been ordered
PR submitted for the RTP crysals, waiting on buyer
  • HV system (2 units w/o pots)
  • cable from DAC to HV system
  • screen and equations app for DAC
  • UVa parts ready (cell + HVPS + dragon boards)
  • laser box top hat
  • schedule (RTP install, beam checkout, back out)
  • RTP monitoring plan during Spring run


2- 2019 CEBAF schedule:

JAN 2 - JAN 22 (3 week SAD/PSS period) SAD
JAN 30 - APR 7 (10 week run period)
Similar to this run with A=30, B=polarized, C=50-70uA, D
Hall A run short until MAR 7, then a 3 day PQB tests a 1-pass 70uA
APR 8 - JUN 2 (8 week SAD period)
Bubble engineering run: 1 wk install + 2 wk run + 1 wk remove
PQB Studies
JUN 10 - AUG 11 (9 week run period)
Hall A PREX polarized 70uA 1 pass @ 499 MHz
Hall B unpolarized 100nA 5 pass @ 499 MHz
Hall C unpolarized 50-90 uA 3-5 pass @ 499 MHz for 3 weeks
AUG 12 - OCT 25 (11 week SAD period)
Opportunity to replace Gun2 electrode 200KV
Opportunity to power Wiens from new PS and HVPS
NOV 1 - DEC 19 (7 week run period)
Hall A CREX polarized 150uA 1 pass @ 499 MHz
Hall B polarized 5 pass @ 250 MHz
Hall C polarized 30uA 5 pass @ 250 MHz
Hall D 5 pass @ 250 MHz


3- New RTP EDM screen:

  1. HV controls
  2. ON/OFF
The DAC VMIC 1068 resides in the VME crate for iocin3. The first 2 channels are used for the High Voltage software.
Here are the EPICS PV names for 8 unused DAC channels on the VMIC_1068:
IGL0I00C1068_DAC05
IGL0I00C1068_DAC06
IGL0I00C1068_DAC07
IGL0I00C1068_DAC08
IGL0I00C1068_DAC09
IGL0I00C1068_DAC10
IGL0I00C1068_DAC11
IGL0I00C1068_DAC12
The card is strapped for 0-10 Volts and the software for these 8 DAC channels are set so a value of 0 = 0 Volts, 5 = 5 Volts, 10 = 10 Volts, etc ... .


4- Beam emittance and spot-size helicity correlated asymmetry:

Retrieved from "https://wiki.jlab.org/ciswiki/index.php?title=PQB_Meeting_December_6,_2018&oldid=16207"