[dsg-hdice] NMR power supply synchronization

[Dr. A.M. Sandorfi]

Dear Peter,

As you are probably aware, Xiangdong has been in frequent contact with
Amanda over the last month. Skipping over the details of those iterations,
the overall status is that rack #2 is failing in many different ways.
(Oddly, I have the general impression that it¹s condition is worse that it
was last December. But that maybe because the December tests didn¹t get to
the point of scanning a real target.) In any case, we are about to condense
new HD targets and so will need to keep rack #1 through the target cycle,
which will be several months. Please plan on taking rack #2 back to the DSG,
fixing its problems, and reinstalling the shunt with readout synchronized to
the field sweeps.

Thanks,...Andy Sandorfi





> On 8/14/17, 3:32 PM, "Peter Bonneau" <bonneau at jlab.org> wrote:
> 
> Hi Andy,
>  
> It is our understanding that HDice is currently using the equipment in NMR
> rack #1 to verify the performance of the rack #2 which DSG as has already
> upgraded. 
>  
> As previously requested by the HDice group, DSG will upgrade NMR rack #1 upon
> completion of rack #2 testing. During the rack #1 upgrade, DSG plans to use
> the rack #1 equipment for the advanced debugging and testing phase of the
> shunt synchronization project. Because we were waiting for the test results
> for rack #2 and necessary equipment from rack #1, we had put the
> synchronization project on hold.
>  
> We are happy to hear that the tests on NMR rack #2 has started. In Xiangdong¹s
> July 28th email, rack #2 was used to test a HDice eHD target cell with good
> initial results which outperformed rack #1. DSG has also completed debugging
> all NRM program issues that were reported during this testing.
>  
> Is there a time table for completion of testing for HDice Control Rack #2?
>  
> Peter Bonneau
>  
>  
>  
>  
>  
> On 8/10/2017 12:35 PM, Dr. A.M. Sandorfi wrote:
>  
>  
>>  
>> Hi Peter,
>> 
>> As we spoke a few weeks ago, we will be needing to operate the NMR rack with
>> the shunt synchronized to the lock-in. You mentioned that was put on hold
>> last January while you dealt with other pressing jobs. Do you have a time
>> table for completion of this task?
>> 
>> Andy Sandorfi
>> 
>> 
>> 
>> 
>> On 8/4/17, 4:59 PM, "Amanda Hoebel" <amandah at jlab.org>
>> <mailto:amandah at jlab.org>  wrote:
>> 
>>  
>>>  
>>> Hi,
>>> 
>>> A new LED has been installed in the transformer box and the box was placed
>>> back in the NMR rack.
>>> 
>>> Regards,
>>> Amanda
>>> _______________________________________________
>>> dsg-hdice mailing list
>>> dsg-hdice at jlab.org
>>> https://mailman.jlab.org/mailman/listinfo/dsg-hdice
>>>  
>>  
>> 
>> 
>>  
>  
>  
> 
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