[Dsg-halla_gem] Inline GEM filters
Ching Him Leung
cleung at jlab.org
Tue Aug 27 13:43:46 EDT 2024
Hi Marc and George
We noticed that channel 44 is leaking around the filter. Could you take a look?
Thank you
Ching Him
________________________________
From: Marc Mcmullen <mcmullen at jlab.org>
Sent: Friday, August 16, 2024 4:03 PM
To: George Jacobs <jacobsg at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; Ching Him Leung <cleung at jlab.org>
Cc: Jacob Thomas McMurtry <rby2vw at virginia.edu>; Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
Hi,
Here is an update on the GEM work.
George has installed all the filter and connected them to the gas flow sensor chassis for the SBS and BB.
I have moved the I2C electronics from the old BB rack to the SBS rack checked it to make sure it has readback. Currently, we have readback on all channels.
I have also replaced the sensor on SBS channel 27 and tested it to make sure it works.
What is left to do:
Hall A should set the flow for channel 27.
Hall A needs to connect a gas supply line to the BB regulator. This should be from the same supply as the SBS.
Hall A needs to connect the BB channels to the 8 gas filters George has installed.
Once everything on the BB distribution is connected , Hall A needs to set the flow levels for the BB channels using the manual flow meters located just above the BB gas flow sensor chassis and filters. The monitoring is already be running.
Regards,
Marc
________________________________
From: Dsg-halla_gem <dsg-halla_gem-bounces at jlab.org> on behalf of Ching Him Leung via Dsg-halla_gem <dsg-halla_gem at jlab.org>
Sent: Thursday, August 15, 2024 9:48 AM
To: George Jacobs <jacobsg at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>
Cc: Jacob Thomas McMurtry <rby2vw at virginia.edu>; Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: [Dsg-halla_gem] Inline GEM filters
Hi George
That work for us. Thank you.
Ching Him
________________________________
From: George Jacobs <jacobsg at jlab.org>
Sent: Thursday, August 15, 2024 9:43 AM
To: Ching Him Leung <cleung at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; George Jacobs <jacobsg at jlab.org>
Cc: Jacob Thomas McMurtry <rby2vw at virginia.edu>; Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
The ferrules are now in hand. I plan on continuing the work on the GEM SBS gas supply rack this afternoon starting ~1:30.
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Dsg-halla_gem <dsg-halla_gem-bounces at jlab.org> on behalf of George Jacobs via Dsg-halla_gem <dsg-halla_gem at jlab.org>
Sent: Friday, August 9, 2024 2:55 PM
To: Ching Him Leung <cleung at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>
Cc: Jacob Thomas McMurtry <rby2vw at virginia.edu>; Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: [Dsg-halla_gem] Inline GEM filters
Hi Ching Him,
Yes, I can do that. I will need to use the filter with the different part number on one of the channels.
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Ching Him Leung <cleung at jlab.org>
Sent: Friday, August 9, 2024 2:22 PM
To: George Jacobs <jacobsg at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>
Cc: Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>
Subject: Re: Inline GEM filters
Hi George
Sorry, I notice the filters are installed only 42 channels. We will need 46 channels in the next experiment. Could you install the remaining filters on ch 35 - 39, and 41 - 42. These channels were not used previously, but will be used later. I don't think we will be using channel 50 later, there the filter can be moved to one of the earlier channels. I am sorry if I was not clear in the previous email.
Thank you
Ching Him
________________________________
From: George Jacobs <jacobsg at jlab.org>
Sent: Friday, August 9, 2024 1:38 PM
To: Ching Him Leung <cleung at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; George Jacobs <jacobsg at jlab.org>
Cc: Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>
Subject: Re: Inline GEM filters
SBS gas distro rack status
- Filter installation is complete for the currently "in use" SBS channels.
- Need to order nylon ferrules for the BB filter fittings
- The gas supply for the BB panels needs connection by Hall A techs (Pressure System item)
- A 1/2" tube will connect the BB pressure regulator to the 1/2" SBS gas supply line using a tee fitting. The lines are plastic and will require nylon ferrules for the tee.
- The BB pressure and flow transducers need wired up.
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Dsg-halla_gem <dsg-halla_gem-bounces at jlab.org> on behalf of George Jacobs via Dsg-halla_gem <dsg-halla_gem at jlab.org>
Sent: Friday, August 9, 2024 9:03 AM
To: Ching Him Leung <cleung at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>; Lawrence Hurt <lhurt at jlab.org>
Cc: Asar Ahmed <kke6qe at virginia.edu>; dsg-halla_gem at jlab.org <dsg-halla_gem at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>
Subject: Re: [Dsg-halla_gem] Inline GEM filters
Hi Ching Him,
Nice to have some good news in the morning. Yes, I will continue the installation and configure the filters as you request. I will be going down to the hall in about 45 min to continue work on the SBS rack.
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Ching Him Leung <cleung at jlab.org>
Sent: Friday, August 9, 2024 8:19 AM
To: George Jacobs <jacobsg at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>
Cc: Marc Mcmullen <mcmullen at jlab.org>; Zachary Remele <remele at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; Asar Ahmed <kke6qe at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
Hi George
With the 47 filters(8 from BB and 39 Holly purchased), could you install them on the on the first 47 channel on the rack? This includes the 8 channels from BB and channels 9 to 47 on SBS?
I believe we will only be using 46 channels in the next experiment.
Thank you
Ching Him
________________________________
From: George Jacobs <jacobsg at jlab.org>
Sent: Thursday, August 8, 2024 4:14 PM
To: Ching Him Leung <cleung at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>
Cc: Marc Mcmullen <mcmullen at jlab.org>; Zachary Remele <remele at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; Asar Ahmed <kke6qe at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
Hi All,
This is an update.
*
We are short 21 filters
*
16 channels completed
*
Total of 35 filters found only, this includes the 8 on the old BB rack.
I will continue this installation tomorrow, but what about the 21 channels without filters?
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Ching Him Leung <cleung at jlab.org>
Sent: Thursday, August 8, 2024 8:45 AM
To: George Jacobs <jacobsg at jlab.org>; Holly Szumila-Vance <hszumila at jlab.org>
Cc: Marc Mcmullen <mcmullen at jlab.org>; Zachary Remele <remele at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; Asar Ahmed <kke6qe at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
Hi George
I have disconnected the gas lines from the GEMs. Please let us know when you are done.
Thank you
Ching Him
________________________________
From: George Jacobs <jacobsg at jlab.org>
Sent: Wednesday, August 7, 2024 4:45 PM
To: Holly Szumila-Vance <hszumila at jlab.org>
Cc: Marc Mcmullen <mcmullen at jlab.org>; Zachary Remele <remele at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; Ching Him Leung <cleung at jlab.org>; Asar Ahmed <kke6qe at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
Sounds like a plan. I will contact everyone before I start tomorrow.
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Holly Szumila-Vance <hszumila at jlab.org>
Sent: Wednesday, August 7, 2024 4:39 PM
To: George Jacobs <jacobsg at jlab.org>
Cc: Marc Mcmullen <mcmullen at jlab.org>; Zachary Remele <remele at jlab.org>; Lawrence Hurt <lhurt at jlab.org>; Ching Him Leung <cleung at jlab.org>; Asar Ahmed <kke6qe at virginia.edu>; Jacob Thomas McMurtry <rby2vw at virginia.edu>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>
Subject: Re: Inline GEM filters
Hi George,
In principle, I think it is not a problem tomorrow, but please coordinate with Ching Him or Asar (in cc).
Thanks,
Holly
On Aug 7, 2024, at 4:25 PM, George Jacobs <jacobsg at jlab.org> wrote:
Hi Holly,
I can install the filter fittings in the hall.
In order to install the shelves and filters, gas lines will need to be disconnected and flow will be interrupted during this process. Will that be a problem? I was thinking about performing this work tomorrow afternoon, Thursday 8/8. Does that work for you?
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
________________________________
From: Holly Szumila-Vance <hszumila at jlab.org>
Sent: Wednesday, August 7, 2024 3:43 PM
To: George Jacobs <jacobsg at jlab.org>
Cc: Marc Mcmullen <mcmullen at jlab.org>
Subject: Re: Inline GEM filters
The GEM filters are in a very large box in Hall A near the gas distribution panel. Do you want to take them out of the Hall?
On Aug 7, 2024, at 3:27 PM, George Jacobs <jacobsg at jlab.org> wrote:
Hi Holly,
The fittings have arrived for the GEM filters. Could I pick them up or can you have someone drop them off?
Cheers,
George
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(email) jacobsg at jlab.org
(url) https://userweb.jlab.org/~jacobsg
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