[BTeam] Fwd: CEBAF Status Update 13: Beam Operations Terminated

[Mike Spata]

Colleagues, 

Please find below Arne's announcement for the official end of the Fall/Spring campaign as well as Mont's accolades. 

Congratulations to everyone for a job well done! 

Please join us if you can at tomorrow's B-Team meeting to celebrate. 

Agenda: 

    * Review the accomplishments 
    * Review the list of incomplete tasks 
    * Discuss work over the summer to get ready for the Fall run 
    * Lessons learned 


Cheers, 
Mike 


PS....LASOs shifts are hereby cancelled. 


----- Original Message -----

From: "Hugh Montgomery" <mont at jlab.org> 
To: "Arne Freyberger" <freyberg at jlab.org>, "mike dallas" <mdallas at jlab.org>, "Bob McKeown" <bmck at jlab.org>, "Andrew Hutton" <Andrew at jlab.org>, "Fulvia Pilat" <pilat at jlab.org>, "rode >> Claus Rode" <rode at jlab.org>, "Allison Lung" <lung at jlab.org>, "Leigh Harwood" <harwood at jlab.org>, "Rolf Ent" <ent at jlab.org>, "rossi patrizia" <rossi at jlab.org>, "Mary Logue" <logue at jlab.org>, "Bob May" <may at jlab.org>, "Will Oren" <oren at jlab.org>, "Tim Michalski" <michalsk at jlab.org>, "Rusty Sprouse" <sprouse at jlab.org> 
Cc: "Michael Spata" <spata at jlab.org>, "Noel Okay" <okay at jlab.org>, "Paul Vasilauskis" <vasilaus at jlab.org>, "Ken Baggett" <baggett at jlab.org>, "lauze" <lauze at jlab.org>, "Bob May" <may at jlab.org>, "Kelly Mahoney" <mahoney at jlab.org>, "Steve Suhring" <suhring at jlab.org>, rmichaud at jlab.org, "Matt Bickley" <bickley at jlab.org>, "Fulvia Pilat" <pilat at jlab.org>, "Kandice Carter" <kcarter at jlab.org>, "Hugh E. Montgomery" <mont at jlab.org> 
Sent: Monday, May 12, 2014 3:01:30 PM 
Subject: RE: CEBAF Status Update 13: Beam Operations Terminated 



Arne, 
Thanks. As you are often at pains to point out, this was a broad team effort, so thanks to everyone for a very successful campaign since the Fall. 
It is a privilege to be around y’all. 
Mont 



From: Arne Freyberger [mailto:freyberg at jlab.org] 
Sent: Monday, May 12, 2014 12:29 PM 
To: Hugh Montgomery; mike dallas; Bob McKeown; Andrew Hutton; Fulvia Pilat; rode >> Claus Rode; Allison Lung; Leigh Harwood; Rolf Ent; rossi patrizia; Mary Logue; Bob May; Will Oren; Tim Michalski; Rusty Sprouse 
Cc: Michael Spata; Noel Okay; Paul Vasilauskis; Ken Baggett; lauze; Bob May; Kelly Mahoney; Steve Suhring; rmichaud at jlab.org; Matt Bickley; Fulvia Pilat; Kandice Carter; Arne Freyberger 
Subject: CEBAF Status Update 13: Beam Operations Terminated 

Mont, 
At 22:56 Sunday May 12th CEBAF beam operations terminated. Extending beam operations beyond Friday was needed for a complete set of optics measurements. As mentioned on Thursday morning, the Cryo group got another chance to recover CHL-1 from another trip (late Thursday night). Thus cryo did in fact get another set of pump down data before transitioning to 4K. The last update to the "progress chart" is below. Beam "s" was limited over the weekend to 9R due to the AR (Arc ten) power supply issue. 

This morning the Summer shutdown work started. The radiation levels in the North and South linac are not quite "public level safe". There needs to be three to four half-lives reduction to meet that standard, or if the radiation source is localized special shielding can be deployed to reduce the radiation levels. RADCON will be assessing the radiation throughout the week to determine if the levels are reduced enough for a safe tunnel tour during the open house. 

Cheers, 
Arne 



-- Arne Freyberger Director of Accelerator Operations Jefferson Lab 12000 Jefferson Avenue      Cell: (757) 876-6289 Postal Suite 19             Email: freyberg at jlab.org Newport News, VA 23606 
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