Difference between revisions of "Run Meeting: March 5th, 2018"

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==Summary of past 72h:==
 
==Summary of past 72h:==
  
−
'''Accelerator'''
+
'''Last Accelerator News'''
−
: 7:30 - ARC magnet issues causes the beam to be off. Same problem was reported last Wednesday. ---> https://cebaf.jlab.org/dtm/open-events?event_id=3456
+
: Monday 13:40 Accelerator (and most of components of site) down. it is not expected to be total operative until Tuesday March 06 (best guess).  
  
 
<span style=color:blue>'''Friday March 2nd'''</span>
 
<span style=color:blue>'''Friday March 2nd'''</span>
Line 22: Line 22:
 
'''Owl shift'''  
 
'''Owl shift'''  
 
: data production
 
: data production
 +
: 00:50 beam off ~1.5h due HPA water problem
 
: Due to a misunderstanding in the crew, two runs with H2 were taken instead of He3.
 
: Due to a misunderstanding in the crew, two runs with H2 were taken instead of He3.
  
 
'''Day shift'''
 
'''Day shift'''
 
: data production
 
: data production
−
: 09:27 Beam to the Hall off due to Beamstopper A-chain dropped ---> https://logbooks.jlab.org/entry/3541990
+
: 09:27 Beam to the Hall off ~1.5h due to Beamstopper A-chain dropped ---> https://logbooks.jlab.org/entry/3541990
−
: 12:10 beam Back
 
  
 
'''Swing shift'''
 
'''Swing shift'''
 
: data production
 
: data production
 +
: 19:50 Raster X power off ---> https://logbooks.jlab.org/entry/3542196
 +
: 20:40 Bill Gunning enter under control access to repair. 24V power supply replaced ---> https://logbooks.jlab.org/entry/3542226
 +
:: ~2h without production.
  
 
<span style=color:blue>'''Sunday March 4th'''</span>
 
<span style=color:blue>'''Sunday March 4th'''</span>
 +
 +
This day we dedicated to take H3 and He3 data in exclusive until obtain ~30k good electrons at each target.
  
 
'''Owl shift'''  
 
'''Owl shift'''  
Line 41: Line 46:
  
 
'''Swing shift'''
 
'''Swing shift'''
−
: data production
+
: data production  
 +
: Beam quality degrading along the shift.
 +
 
 +
[[File:Snapshot 1.png]]
 +
 
 +
: 21:40 1L24 SEL Quenches and 2L09 dropped HV. Beam off for 3h.
 +
:: ---> https://logbooks.jlab.org/entry/3542772
 +
:: ---> https://logbooks.jlab.org/entry/3542778
  
−
<span style=color:blue>'''Mondayy March 5th'''</span>
+
<span style=color:blue>'''Monday March 5th'''</span>
  
 
'''Owl shift'''  
 
'''Owl shift'''  
−
: data production
+
 
 +
: data production  
 +
:: Reached the 30k goal
 +
 
  
 
'''Day shift'''
 
'''Day shift'''
−
: data production
 
  
 +
Change of plans!!!
 +
 +
All the time schedule is moved one hour late in order to allow Hall C finish a kinematic point before change polarity with control access.
 +
 +
Hall A and B entered in controlled access early (9:00) so we didn't run parasitic runs.
 +
 +
: 9:00 Beam Studies <span style=color:red>(+1h)</span>
 +
:: Parasitic data <span style=color:red>(No Hall A)</span>
 +
: 11:00 Controlled Access <span style=color:red>(RadCon requested at 9:00)</span>
 +
:: LHRS Polarity changed
 +
:: Vacuum minor inspection
 +
:: Walk-through
  
 +
13:39 Accelerator site power outage (A LOT OF ALARMS!!). Target temperature ~50K, Dave Meekens on site.
  
 +
==PLAN==
  
 +
: LHRS positrons data
 +
: RHRS data production
  
  
 
<span style=color:red>'''DATA Status'''</span>
 
<span style=color:red>'''DATA Status'''</span>
  
−
Round IX. Column 25/(24+4).
+
Round IX. Column 27/(24+4).
 +
 
 +
Good Electrons
 +
LHRS:
 +
He3: 30.3k; H3: 30.7k; D2: 29k
 +
 
 +
RHRS:
 +
He3: 37.4k; H3: 16.6k; D2: 15.6k
  
 
==Plan:==
 
==Plan:==
  
−
-Changing LHRS polarity
+
:-Changing LHRS polarity
−
-measuring positrons (LHRS)
+
:-measuring positrons (LHRS)
−
-Normal running RHRS
+
:-Normal running RHRS
  
 
Total: two shifts.  
 
Total: two shifts.  
Line 70: Line 107:
  
 
<span style=color:red>'''EXTRA:'''</span>
 
<span style=color:red>'''EXTRA:'''</span>
−
;Monday Beam Studies
 
−
 
−
:Start 9:00 am
 
−
 
−
*opportunistic beam.
 
−
**FFB (2h)
 
−
 
−
*Beam OFF
 
−
** 'eta' tool devel (2h)
 
−
**Optics (3h)
 
−
 
−
:Beam back 16:00-17:00.
 
  
 
;Tuesday RF Recovery
 
;Tuesday RF Recovery
Line 90: Line 115:
 
===Slides===
 
===Slides===
  
−
*[https://hallaweb.jlab.org/wiki/images/9/96/Pass1Overview.pdf Pass 1 Overview] (Evan)
+
* BCM class additions [https://wiki.jlab.org/tegwiki/images/5/51/BCMclass_bq.pdf slides] (Bane)
−
*[https://wiki.jlab.org/tegwiki/images/e/e9/Beam_quailty.pdf Beam quality cut] (Bane)
+
* shujie [https://wiki.jlab.org/tegwiki/index.php/File:Target-density.pdf target density simulation from Silviu]
−
 
 
 
Tritium elog: https://hallaweb.jlab.org/dvcslog/H3/
 
Tritium elog: https://hallaweb.jlab.org/dvcslog/H3/
  

Latest revision as of 15:56, 5 March 2018

Back to:

Main Page
Daily Run Meetings

4:00PM Run Meeting, Counting house meeting room (200C)


RC: Carlos Ayerbe

Summary of past 72h:

Last Accelerator News

Monday 13:40 Accelerator (and most of components of site) down. it is not expected to be total operative until Tuesday March 06 (best guess).

Friday March 2nd

Swing shift

data production

Saturday March 3rd

Owl shift

data production
00:50 beam off ~1.5h due HPA water problem
Due to a misunderstanding in the crew, two runs with H2 were taken instead of He3.

Day shift

data production
09:27 Beam to the Hall off ~1.5h due to Beamstopper A-chain dropped ---> https://logbooks.jlab.org/entry/3541990

Swing shift

data production
19:50 Raster X power off ---> https://logbooks.jlab.org/entry/3542196
20:40 Bill Gunning enter under control access to repair. 24V power supply replaced ---> https://logbooks.jlab.org/entry/3542226
~2h without production.

Sunday March 4th

This day we dedicated to take H3 and He3 data in exclusive until obtain ~30k good electrons at each target.

Owl shift

data production

Day shift

data production

Swing shift

data production
Beam quality degrading along the shift.

Snapshot 1.png

21:40 1L24 SEL Quenches and 2L09 dropped HV. Beam off for 3h.
---> https://logbooks.jlab.org/entry/3542772
---> https://logbooks.jlab.org/entry/3542778

Monday March 5th

Owl shift

data production
Reached the 30k goal


Day shift

Change of plans!!!

All the time schedule is moved one hour late in order to allow Hall C finish a kinematic point before change polarity with control access.

Hall A and B entered in controlled access early (9:00) so we didn't run parasitic runs.

9:00 Beam Studies (+1h)
Parasitic data (No Hall A)
11:00 Controlled Access (RadCon requested at 9:00)
LHRS Polarity changed
Vacuum minor inspection
Walk-through

13:39 Accelerator site power outage (A LOT OF ALARMS!!). Target temperature ~50K, Dave Meekens on site.

PLAN

LHRS positrons data
RHRS data production


DATA Status

Round IX. Column 27/(24+4).

Good Electrons LHRS: He3: 30.3k; H3: 30.7k; D2: 29k

RHRS: He3: 37.4k; H3: 16.6k; D2: 15.6k

Plan:

-Changing LHRS polarity
-measuring positrons (LHRS)
-Normal running RHRS

Total: two shifts.


EXTRA:

Tuesday RF Recovery
Start 8:30
Ends 12:30

Slides

Tritium elog: https://hallaweb.jlab.org/dvcslog/H3/

BlueJeans connection info:

To join the Meeting: https://bluejeans.com/372278653

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