Difference between revisions of "November 14, 2018 - Group Meeting"

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Fall 2018 Run, January 2019 SAD and Beyond...
+
===Fall 2018===
 +
: '''CEBAF Status'''
 +
::Program through Christamas
 +
:::* Tue 11/20 - Hall A turns off for rest of the year
 +
:::* Mon 11/26 - Linac and Pass changes (ABCD = Off/4/2/5.5) => Wien change for B, D moves to the A-list to limit bleedthrough
 +
:::* Mon 12/10 - Linac and Pass changes (ABCD = Off/4/3/5.5) => Wien change for B
 +
:::* Thu 12/20 - Machine off at 8am for Holiday break
 +
:: Beam Studies and OnCall Activities
 +
:::'''Gun2 QE''' [https://logbooks.jlab.org/entry/3626026 Gun2 lifetime and recent QE scan] and [https://logbooks.jlab.org/entry/3626670 Spot Move 11/15/18]
 +
:::'''High Polarization in Hall B''' [https://logbooks.jlab.org/entry/3619778 Hall B Moller and Beam Energy] and [https://logbooks.jlab.org/entry/3610318 Mott measurements]
 +
:::'''SF6 Relief Valve''' [https://logbooks.jlab.org/entry/3621341 SF6 relief valve leaky] and [https://logbooks.jlab.org/entry/3626304 On-Call Repair]
 +
:::'''Easy Button Not So Easy''' [https://logbooks.jlab.org/entry/3621315 Hall A Laser investigation] and [http://opsweb.acc.jlab.org/CSUEApps/atlis/task/18591 SCAM modification]
 +
:::'''Vertical Wien Filter Current Instability''' [https://logbooks.jlab.org/entry/3621950 Vertical Wien current instability addressed, but not fixed] and [https://logbooks.jlab.org/entry/3626755 Vertical Wien current instability resolved]
 +
:::'''PQB Studies''' [https://logbooks.jlab.org/entry/3624989 Low QE => Large Q Asym] and [https://logbooks.jlab.org/entry/3625504 Helicity board signal vs. setpoint]
 +
:'''LERF Status'''
 +
::[https://logbooks.jlab.org/entry/3615342 LERF Driver Laser Enclosure Certified] and [http://devweb.acc.jlab.org/CSUEApps/atlis/task/18586 LERF PSS Certificiation]
 +
: '''GTS Status'''
 +
: '''UITF Status'''
  
−
===2018 CEBAF Fall Run===
+
=== Forecast 2019 ===
−
: Program through Christmas
+
:'''JAN 2 - JAN 22 (3 week SAD/PSS period)'''  [https://accweb.acc.jlab.org/calendar/view-outlook?calendar=1&year=2019&week=1 SAD]
−
:: Tue 11/20 - Hall A turns off for rest of the year
+
::''MUST''
−
:: Mon 11/26 - Linac and Pass changes (ABCD = Off/4/2/5.5) => Wien change for B
+
:::*[http://devweb.acc.jlab.org/CSUEApps/atlis/task/18580 Heat/Activate Gun2 Photocathode SLSP]
−
:: Mon 12/10 - Linac and Pass changes (ABCD = Off/4/3/5.5) => Wien change for B
+
:::*John ordered small tank to top off SF6
−
:: Thu 12/20 - Machine off at 8am for Holiday break
+
:::*[http://devweb.acc.jlab.org/CSUEApps/atlis/task/18582 Install RTP Pockels cell]
 +
:::*[http://opsweb.acc.jlab.org/CSUEApps/atlis/task/18562 Fiducialize IHA2D00 for Bubble]
 +
::''SHOULD''
 +
:::*Accelerator electricians to install two new racks + cable tray in ISB for 200KV Wien HVPS and address iocin6 load
 +
:::*Implement 1kV anode safe floating bias supply inline with anode-picoammeter
 +
::''LIKE''
 +
:::*Restore/HCO helicity magnets?
 +
:::*[https://logbooks.jlab.org/entry/3625601 Install DBR?]
  
−
:[https://logbooks.jlab.org/entry/3621348 Gun2 lifetime and recent QE scan]
+
: '''FEB 1 - Arne's target date for LERF to be ready'''
−
:[https://logbooks.jlab.org/entry/3619778 Hall B Moller and Beam Energy]
+
:: Good photocathode
−
:[https://logbooks.jlab.org/entry/3610318 Mott measurements]
+
:: Gun reaches HV
−
:[https://logbooks.jlab.org/entry/3621341 SF6 relief valve leak]
+
:: Laser/DLCP ready to go
−
:[https://logbooks.jlab.org/entry/3621315 Hall A Laser restoring]
+
:: Let's work with Chris and Shaun to develop a plan to restore beam through QCM (will be 2K)
−
:[https://logbooks.jlab.org/entry/3621950 Vertical Wien PS instability addressed]
+
:: No firm Radioisotope run dates yet
−
:[https://logbooks.jlab.org/entry/3625504 Helicity board signal vs. setpoint]
 
  
−
===2018 LERF Status===
+
: '''JAN 30 - APR 7 (10 week run period)'''
−
:[https://logbooks.jlab.org/entry/3615342 LERF Driver Laser Enclosure Certified]
+
:: Similar to this run with A=30, B=polarized, C=50-70uA, D
−
:LERF PSS Certification - Support for Gun and Laser enable
+
:: Hall A run short until MAR 7, then a 3 day PQB tests a 1-pass 70uA
  
−
===January 2019 CEBAF SAD===
+
: '''APR 8 - JUN 2 (8 week SAD period)'''
−
:[http://devweb.acc.jlab.org/CSUEApps/atlis/task/18580 Heat/Activate Gun2 Photocathode SLSP]
+
:: PQB Studies?
−
:John ordered small tank to top off SF6
+
:: Early opportunity Gun2 electrode 200KV
−
:[http://devweb.acc.jlab.org/CSUEApps/atlis/task/18582 Install RTP Pockels cell]
 
−
:Implement 1kV anode safe floating bias supply inline with anode-picoammeter
 
−
:[http://opsweb.acc.jlab.org/CSUEApps/atlis/task/18562 Fiducialize IHA2D00 for Bubble]
 
−
:Accelerator electricians to install two new racks + cable tray in ISB for 200KV Wien HVPS and address iocin6 load
 
−
:[https://logbooks.jlab.org/entry/3625601 Install DBR?]
 
  
−
===Beyond===
+
: '''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)'''
 +
:: Gun2 electrode 200KV
 +
:: 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
 +
 
 +
===And Beyond===

Latest revision as of 09:55, 16 November 2018

Fall 2018

CEBAF Status
Program through Christamas
  • Tue 11/20 - Hall A turns off for rest of the year
  • Mon 11/26 - Linac and Pass changes (ABCD = Off/4/2/5.5) => Wien change for B, D moves to the A-list to limit bleedthrough
  • Mon 12/10 - Linac and Pass changes (ABCD = Off/4/3/5.5) => Wien change for B
  • Thu 12/20 - Machine off at 8am for Holiday break
Beam Studies and OnCall Activities
Gun2 QE Gun2 lifetime and recent QE scan and Spot Move 11/15/18
High Polarization in Hall B Hall B Moller and Beam Energy and Mott measurements
SF6 Relief Valve SF6 relief valve leaky and On-Call Repair
Easy Button Not So Easy Hall A Laser investigation and SCAM modification
Vertical Wien Filter Current Instability Vertical Wien current instability addressed, but not fixed and Vertical Wien current instability resolved
PQB Studies Low QE => Large Q Asym and Helicity board signal vs. setpoint
LERF Status
LERF Driver Laser Enclosure Certified and LERF PSS Certificiation
GTS Status
UITF Status

Forecast 2019

JAN 2 - JAN 22 (3 week SAD/PSS period) SAD
MUST
SHOULD
  • Accelerator electricians to install two new racks + cable tray in ISB for 200KV Wien HVPS and address iocin6 load
  • Implement 1kV anode safe floating bias supply inline with anode-picoammeter
LIKE
FEB 1 - Arne's target date for LERF to be ready
Good photocathode
Gun reaches HV
Laser/DLCP ready to go
Let's work with Chris and Shaun to develop a plan to restore beam through QCM (will be 2K)
No firm Radioisotope run dates yet
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)
PQB Studies?
Early opportunity Gun2 electrode 200KV
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)
Gun2 electrode 200KV
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

And Beyond

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