[Dsg-rich] [EXTERNAL] RICH electronics

[Marco Mirazita]

Hi Tyler,
do you know if Bob has completed the replacement of the FT?
If so, the compressor could be restarted on Monday morning, once we are 
sure everything is working properly I can turn on the RICH electronics 
and keep it on for the night and then make the tests on Tuesday morning.

As you know, we didn't have much time to optimize the working point of 
the cooling system after the RICH installation, we simply choose running 
conditions that ensure a safe operation of the detector.
But these running conditions might be problematic with two RICH modules 
and definitely not sustainable in case of failure of one of the two 
compressors.
Therefore, also in preparation of the upcoming CLAS12 data taking, I'm 
planning a visit to JLab for Dario and Sandro to try to optimize the 
running conditions, and to be effective this work must be coordinated 
with you and the DSG.
The proposed dates are from October 21 to October 31. Is this plan ok 
for you?
Thank you,
Marco




Il 2019-09-18 14:12 Tyler Lemon ha scritto:
> Hi Marco,
> 
>  Bob Miller has scheduled the replacement of the faulty pressure
> transducer (PT) on the air-cooling buffer tank for next Wednesday,
> September 25.
> 
>  Could the tests be scheduled to start Thursday September 26?
> 
>  Best regards,
>  Tyler
> 
> -------------------------
> 
> FROM: Marco Mirazita <Marco.Mirazita at lnf.infn.it>
>  SENT: Wednesday, September 18, 2019 4:08 AM
>  TO: Tyler Lemon <tlemon at jlab.org>
>  CC: dsg-rich <dsg-rich at jlab.org>; Valery Kubarovsky <vpk at jlab.org>;
> marco contalbrigo <mcontalb at fe.infn.it>
>  SUBJECT: [EXTERNAL] RICH electronics
> 
> Hi Tyler,
>  the RICH electronics is off since quite a lot of time and in
> preparation
>  of the upcoming CLAS12 running I would like to turn it on to verify
> that
>  everything is still working and eventually to take new scaler
>  calibration data.
>  I could plan this work for the beginning of the next week.
>  In preparation for that, we should coordinate to have all the systems
> 
>  ready. Would you be available to start the compressor for the test?
>  Thank you,
>  Marco