[Dsg-hallb_magnets] Hall B Sc magnets run

[Denny Insley]

Hi Guys,


     I have spoken with MCC about the concern with leave the magnets at 
any current in restricted access. They have agreed to go to controlled 
access when we are ready to ramp magnets and stay there.  They will be 
fully staffed at the time and have no problem switching to controlled.  
Eugene will be on site assisting Probir with the sweep and has agreed to 
call for controlled access at the onset of ramping the magnets.


_/*Denny Insley*/_
*Jefferson Labs Hall B work coordinator dinsley at jlab.org work: 
757-269-6071 cell: 757-810-9576*

On 11/22/2019 10:49 AM, Probir Ghoshal wrote:
> Dear Stepan,
> The magnet is at 250A, as mentioned if the magnet trips because of any 
> reason not going tp cause any heating or cryo-event.
> We intend to run the magnets as soon as we come back from holidays and 
> avoid the magnet sweep and to restrict people working around the 
> magnet (if this is not adm. controlled that we have seen and 
> experienced in the past).
> But again it is your choice...hence asked to confirm.
> Please let me know. Then we can plan every thing upon our return 
> because we have already run both magnets to field last month to ensure 
> magnet performance for the Fall run.
>
> Regards
> Probir
> ------------------------------------------------------------------------
> *From:* Stepan Stepanyan <stepanya at jlab.org>
> *Sent:* Friday, November 22, 2019 10:43 AM
> *To:* Probir Ghoshal <ghoshal at jlab.org>
> *Cc:* Denny Insley <dinsley at jlab.org>; Ruben Fair <rfair at jlab.org>; 
> dsg-hallb magnets <dsg-hallb_magnets at jlab.org>; Eugene Pasyuk 
> <pasyuk at jlab.org>; Bob Miller <rmiller at jlab.org>; David Kashy 
> <kashy at jlab.org>; Marco Battaglieri <battagli at jlab.org>
> *Subject:* Re: Hall B Sc magnets run
> Hello Probir,
>
> I have an issue with leaving magnets ON over thanksgiving breaks with 
> no one in the counting room and the hall in “Restricted access”. What 
> is the purpose of leaving them ON over that period.
>
> Thanks, Stepan
>
>> On Nov 22, 2019, at 9:03 AM, Probir Ghoshal <ghoshal at jlab.org 
>> <mailto:ghoshal at jlab.org>> wrote:
>>
>> Dear Denny and Team
>>
>> As discussed this morning, HallB is scheduled to get the beam on 
>> Dec2nd 2019.
>> Denny on Vacation till 2nd Dec and Dave and Bob will also be away 
>> from Lab.
>> In order to run the magnets to full field on Dec 2nd, the following 
>> is suggested-
>>
>>  1. HOT check out (magnets) - Eugene P (sign off) Wednesday
>>     Morning/afternoon (27th Nov 2019)
>>  2. Magnet Sweep - Probir G and others (if available)
>>  3. Run both magnets to full field and back down to 250 A and park
>>     over the Thanksgiving time. This will not impact any other
>>     system, members needs to be aware off the magnets at field and no
>>     work is allowed within the boundary.
>>
>> Please let me know if you have concerns, else we go ahead with this 
>> as our schedule going ahead.
>> Please find the attached Fall 2019 run rota list for your ready 
>> reference.
>>
>> All information regarding the checks carried out earlier last month 
>> is saved at the following location-
>> M:\hallb_eng\CLAS12\Magnets\Operations\Fall 2019 Run
>>
>> Regards
>>
>> Probir
>> <Physics Fall 2019_Spring 2020 Run_Cover for Halls_B-C-D v2.xlsx>
>
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