[Halld] Shifts canceled until next Monday (Apr. 13th)

Alexandre Deur deurpam at jlab.org
Tue Apr 7 08:26:53 EDT 2015


Dear collaborators,

Following up on the accelerator repair/investigations: Some leaking bellows were found yesterday during the leak checks of the accelerator sub-atmospheric connections. Their repairs are ongoing and the leak checking is continuing. This is causing an additional day of delay before the machine is restored to operations. Consequently, shifts are now canceled until Monday morning (April 13th), 8am.

Thank you,

Alexandre Deur, Hall D Run Coordinator.
  
RC cell: 757-383-5542
Office Phone: 757-269-7526

----- Original Message -----
> From: "Alexandre Deur" <deurpam at jlab.org>
> To: "halld" <halld at jlab.org>
> Sent: Monday, April 6, 2015 9:29:25 AM
> Subject: Re: [Halld] Shifts canceled until next Sunday (Apr. 12th)

> Dear collaborators,
> 
> Given that the machine will be down until at least Sunday, we will not have our
> regular daily run coordination meetings. We will have only two meetings this
> week, Wednesday and Friday at the usual time, 8:45am. Daily meetings will
> restart next week.
> 
> Best regards,
> 
> Alexandre
> 
> ----- Original Message -----
>> From: "Alexandre Deur" <deurpam at jlab.org>
>> To: "halld" <halld at jlab.org>
>> Sent: Monday, April 6, 2015 9:22:39 AM
>> Subject: [Halld] Shifts canceled until next Sunday (Apr. 12th)
> 
>> Dear collaborators,
>> 
>> Repairs and adaptation of the cooling system to the 6 GeV run is proceeding as
>> expected. A committee has been set-up to investigate the origin of the problems
>> triggered by the power failure, in particular the origin of the contamination
>> found in the cooling system. A recommendation of the committee is to verify the
>> bellows in the North Linac for leaks that could have been at the origin of the
>> contamination. This will be done today. It will postpone the recovery schedule
>> by a day. Consequently, shifts are canceled until Sunday morning (April 12th),
>> 8am.
>> 
>> Best regards,
>> 
>> Alexandre Deur, Hall D Run Coordinator.
>>    
>> RC cell: 757-383-5542
>> Office Phone: 757-269-7526
>> _______________________________________________
>> Halld mailing list
>> Halld at jlab.org
> > https://mailman.jlab.org/mailman/listinfo/halld


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