[Hps-ecal] hv currents

Nathan Baltzell baltzell at jlab.org
Sat Nov 29 21:44:29 EST 2014


Hi Gabriel,

Sorry it wan't clear.  What Stepan said is correct:  /home/hpsrun only
exists on the clon machines in the counting room behind the hall
gateway.  To get access, you have to either physically go to the
counting room, or ssh in with a secondary password.

Meanwhile, I copied those same files here, accessible via ifarms:
/home/hps/.ecalhv

Also, sometime today a large number of HV channels tripped.
When I last checked this morning everything looked ok.  Did
anyone else notice anything strange?  Temps still look normal.

LB13
LB18
LB19
LB21
LB22
RT13
RT14
LT2

-Nathan




On Nov 27, 2014, at 12:25 PM, Stepan Stepanyan <stepanya at jlab.org> wrote:

> Gabriel,
> 
> I believe /home/hpsrun is on our clon machines in counting room.
> 
> Stepan
> On 11/27/14, 12:14 PM, Gabriel CHARLES wrote:
>> Hi Nathan,
>> 
>>    I've tried to access the hv files but:
>> ifarm1101> cd /home/hpsrun/
>> /home/hpsrun/: Permission denied.
>> And:
>> ifarm1101> ls /home/hpsrun/.ecalhv
>> ls: cannot access /home/hpsrun/.ecalhv: Permission denied
>> 
>> Is it because I'm not using the JLab network? When you will have time
>> could change the permission access please or copy it somewhere I can
>> access to?
>> 
>> Regards,
>> Gabriel
>> 
>> Le 2014-11-26 20:33, Nathan Baltzell a écrit :
>>> Hi Everyone,
>>> 
>>> The one remaining HV group that was not at nominal voltage had its
>>> current
>>> limit raised a week ago (to 65 uA, the largest of all channels), and
>>> we've had
>>> no trips since then and all channels holding at nominal voltages.
>>> Here's a pic
>>> of the channels currently with high draw.
>>> 
>>> Also, in ~hpsrun/.ecalhv is a set of text files with current readbacks
>>> (filenames
>>> contain timestamp). These are set to go to a database automatically
>>> before
>>> long, but meanwhile I have a cronjob recording them hourly in those
>>> text files
>>> for at least the past week (there were some blips due to ioc/network
>>> changes
>>> early last week). Intent is to see the time-dependence, just need to
>>> write a
>>> script to read and plot them ...
>>> 
>>> -Nathan
>>> 
>>> Begin forwarded message:
>>> 
>>>> From: Gabriel CHARLES <charlesg at ipno.in2p3.fr>
>>>> 
>>>> Subject: Re: [Hps] Run schedule for next week
>>>> 
>>>> Date: November 26, 2014 4:10:16 PM EST
>>>> 
>>>> To: Nathan Baltzell <baltzell at jlab.org>
>>>> 
>>>> If I am right there is one HV group that do not work at nominal
>>>> value, should we take care of it during the HPS target assembly?
>>>> 
>>>> Le 2014-11-26 15:57, Nathan Baltzell a écrit :
>>>> 
>>>>> Dear Everyone,
>>>>> Next week the accelerator will work to resume multi-hall
>>>>> operation, and
>>>>> it is possible Hall-B will have beam as early as Thursday evening.
>>>>> So, shifts in the Hall-B counting room are set to resume on
>>>>> Thursday,
>>>>> December 4 with the swing shifts.
>>>>> The previously planned down time Dec. 5-12 has been cancelled and
>>>>> will
>>>>> now need to have shifts manned.
>>>>> The plan is for the HPS target assembly to have been installed and
>>>>> tested
>>>>> by Wednesday, and the full beamline returned to vacuum and the
>>>>> hall closed
>>>>> on Thursday. Then take beam to the tagger dump and repeat and
>>>>> finish
>>>>> quality studies, and then do the same with beam to the Faraday
>>>>> cup.
>>>>> Regards,
>>>>> Nathan
>>>>> _______________________________________________
>>>>> Hps mailing list
>>>>> Hps at jlab.org
>>>>> https://mailman.jlab.org/mailman/listinfo/hps
>>>> --
>>>> Gabriel CHARLES
>>>> Institut de Physique Nucléaire d'Orsay
>>> 
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> 
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