[Rgc] [clas_members] [New Logentry] RC Daily Summary August 14, 2022

[Christopher Keith]

If the beam is taken away Monday, I might anneal the target again.


Chris

On 8/14/22 11:07 AM, Sebastian Kuhn wrote:
> Hi Lena,
>
> I am glad that Ops is planning to work on our bleedthrough problem on 
> Monday. If indeed the pass change has been delayed to Wednesday, we 
> can continue taking data on NH3 until Tuesday and then switch to C for 
> the last 3 shifts before the pass change. We should probably plan to 
> replace the present NH3 sample with the other one Chris had in mind on 
> Wednesday.
>
> - Sebastian
>
>> On Aug 14, 2022, at 10:25 AM, yprok at jlab.org wrote:
>>
>>
>>   RC Daily Summary August 14, 2022
>>   <https://logbooks.jlab.org/entry/4028691>
>>
>>   * Edit
>>     <https://logbooks.jlab.org/entry/4028691/edit?destination=email/send>
>>   * Delete
>>     <https://logbooks.jlab.org/entry/4028691/delete?destination=email/send>
>>
>> Lognumber4028691 <https://logbooks.jlab.org/entry/4028691>. Submitted 
>> byyprok <https://logbooks.jlab.org/user/yprok>onSun, 08/14/2022 - 
>> 10:21 
>> <https://logbooks.jlab.org/entries?start_date=1660483271&end_date=1660490471&book=HBLOG&book=ELOG>.
>> Logbooks:	HBLOG <https://logbooks.jlab.org/book/hblog>ELOG 
>> <https://logbooks.jlab.org/book/elog>
>> Entry Makers:	yprok
>>
>> Saturday, August 13
>>
>> Day Shift: Took data with NH3(+), HWP IN. Target polarization ~51%. 
>> Bleedthru test showed ~1nA current from Hall C.
>>
>> Swing Shift: Target polarization stopped growing at around 51%. 
>> Target group performed an anneal between 4 and 6pm. After the anneal, 
>> target polarization reached 58%, and we resumed taking data. 
>> Bleedthru test showed ~1nA current from Hall C
>>
>> Sunday, August 14th
>> Owl Shift: Took data with NH3(+), HWP IN. Experienced BMT trips and 
>> DAQ problems. Called Sergey to resolve the DAQ issues.
>>
>> Day Shift. Continued taking data. Bleedthru test showed ~1nA current 
>> from Hall C. We have adjusted reported ABUs to account for this problem.
>>
>> Plan for the rest of the weekend: continue to take data on NH3. 
>> Switch HWP to OUT during the day shift on Sunday.
>>
>> PD informs us that 1) Pass change has been delayed to Wednesday (17th 
>> of August) and 2) Accelerator will try to redirect our bleedthru 
>> current to Hall A on Monday, which will require some downtime. There 
>> will be more discussion about it in Monday morning meetings.
>>
>> There will be no RC meeting today unless requested by the collaborators.
>>
>> Data taking progress:
>> Day 4.0 nA on NH3 (HWP IN), completed runs 16672(52M), 16673(7M), 
>> 16674(16M)
>> Swing 4.0 nA on NH3 (HWP IN), completed runs 16675(57M), 16676(66M)
>> Owl 4.0 nA on NH3 (HWP IN), completed runs 16678(24M), 16679(25M), 
>> 16681(73M)
>>
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