Difference between revisions of "PQB Meeting December 6, 2018"

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(Created page with "We will meet in TEDF 2559 Thursday December 6 at 4:00 pm EST. == For those calling in we'll use the Blue Jeans [https://cc.jlab.org/bluejeans] audio conference system. == P...")
 
 
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'''Agenda:'''  
 
'''Agenda:'''  
  
−
1- Should we re-install Helicity Magnets on beamline? upgrade controls?
+
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)'''  [https://accweb.acc.jlab.org/calendar/view-outlook?calendar=1&year=2019&week=1 SAD]
 +
:::*[http://devweb.acc.jlab.org/CSUEApps/atlis/task/18580 Heat/Activate Gun2 Photocathode SLSP]
 +
:::*[http://devweb.acc.jlab.org/CSUEApps/atlis/task/18582 Install RTP Pockels cell]
 +
:::*Restore/HCO helicity magnets
 +
 
 +
: '''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:
 +
# HV controls
 +
# 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:
 +
* Kent Paschke, "Emittance Growth and Spot Size": [[media:Paschke_SpotSizeEmittance_Dec2018.pdf]]
 +
* Jay Benesch, "Emittance Measurements since Dec 2017": [[media:beam_properties_FY18.ods]]

Latest revision as of 12:04, 7 December 2018

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:

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