[Halld] Hall D commissioning - a short summary and outlook

[Alexandre Deur]

Dear collaborators,

You can find a summary of the Fall 15 commissioning run in the Hall D logbook:

https://logbooks.jlab.org/entry/3369812

Wishing you a happy new year,

Alexandre Deur

----- Original Message -----
> From: "Eugene Chudakov" <gen at jlab.org>
> To: "halld" <halld at jlab.org>, "gluex-collaboration" <gluex-collaboration at jlab.org>
> Sent: Wednesday, December 23, 2015 12:19:29 PM
> Subject: [Halld] Hall D commissioning - a short summary and outlook

> Dear colleagues,
> 
> The Fall run of 2015 was dedicated to the accelerator final
> commissioning. The hall operations were opportunistic. In total Hall D
> received about a week of intermittent beam.
> 
> Accelerator - the progress:
> 
> a) 12 GeV beam in the Hall D tagger (250 MHz)
> 
> b) 11 GeV 70 uA beam in Hall A
> 
> c) 750 MHz RF beam separation was used for a few days. It is not
>    completely finished yet.
> 
> d) There is progress in commissioning of the Hall D beam Fast Feedback
>    System (FFS) by the accelerator team.
> 
> Accelerator - some tasks still to be done:
> 
> e) Fix the issues with the separator.
> 
> f) Finish the commissioning of the FFS.
> 
> g) Commissioning of the Hall D nA BPMs, beam line optics studies.
> 
> h) Improve the beam delivery efficiency (RF trips, PSS issues etc).
> 
> On the Hall D side we made progress with the tagger/beam detectors,
> the trigger systems and the DAQ. The solenoid was off.  More details
> will be provided by Alexandre Deur (the Run Coordinator).
> 
> In summary, at the end of 2015 we see a tremendous progress in the
> commissioning of the accelerator and Hall D. Due to various reasons,
> Hall D received less beam time than planned initially and our
> commissioning is not yet complete.
> 
> In Spring 2016 Hall D is scheduled for a 2.5 months running, starting
> on February 4-th. I expect that a part of the time will be actually
> used by various accelerator tasks. Our goal will be to get fully ready
> for the GlueX physics run in the Fall 2016, but also to collect
> good enough data for producing publishable "early physics" results.
> 
> I suggest to have a special meeting to discuss the preliminary results
> of the Fall run, the lessons learned, and the plans for the next
> run. The tentative date is January 13.
> 
> I wish all of us to have wonderful holidays now and happy data taking
> in 2016!
> 
> ------------------------------------------------------
> Eugene Chudakov
> https://userweb.jlab.org/~gen/
> phone (757) 269 6959  fax (757) 269 6331
> Thomas Jefferson National Accelerator Facility
> 12000 Jefferson Ave, STE 4,
> Newport News, VA 23606 USA
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