[dsg-hallb_gas] [EXTERNAL] Project ALERT: gas system
Marc Mcmullen
mcmullen at jlab.org
Thu Feb 15 10:10:41 EST 2024
Hi Bob,
Thanks for the update.
The only "new to us" control items are the Alicat MFCs. We are familiar with, the pressure transmitters and solenoids. I will probably start on writing controls for ALERT next week and we will add in the MFCs when they arrive and are on the network.
I'll find an area in 125 to put the solenoids, pressure transmitters, and MFCs as they arrive. I'll update you on the location.
Marc
Get Outlook for iOS<https://aka.ms/o0ukef>
________________________________
From: Bob Miller <rmiller at jlab.org>
Sent: Thursday, February 15, 2024 8:01:19 AM
To: Marc Mcmullen <mcmullen at jlab.org>
Cc: Brian Eng <beng at jlab.org>
Subject: Fw: [EXTERNAL] Project ALERT: gas system
Hi Marc,
Here is an update from ALERT. They would like to operate the gas system by April 1st. I will move the gas panel to the EEL next week and make the changes that I can make now, then finish when the parts arrive.
We will hold off on the water system that Gabriel describes until he is sure that he need it.
Thanks,
Bob
________________________________
From: Gabriel Charles <gabriel.charles at ijclab.in2p3.fr>
Sent: Friday, February 9, 2024 10:27 AM
To: Bob Miller <rmiller at jlab.org>
Cc: Raphael Dupre <raphael.dupre at ijclab.in2p3.fr>
Subject: Re: [EXTERNAL] Project ALERT: gas system
Dear Bob,
I'm finally back full time.
The documents you provided are clear and describe a system that corresponds to our needs.
How is it going with its preparation? I have read your exchanges with Raphael but here are two points to have dates in mind:
- the HDC will arrive at JLab in March Monday 18. So contrary to what I was telling you, not this month February which was our initial aim
- the slight delay means I can not come with it, and will come first half of April, it is at this time that I would like to test the detector with the gas if available.
As we discussed, I ask around how to add water. The idea is basically to split the gas in two lines, one dry, one wet and modify the flow to modify the ppm of water.
The wet line is then sent to bubbler with water. The quantity of water is monitored at different points in the line before and after the detector.
The email from the specialist is after my mail.
In terms of timing: this solution does not need to be ready when we are in the EEL building as it will be used only if the detector has troubles due to ageing.
I know, it is never pleasant to modify or add functionnality to a system being installed but do you think that such solution could be added?
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 1 69 15 64 42
https://www.instagram.com/particledetectors/
Dear Gabriel,
We are adding water vapour in many systems with concentrations ranging from about 100 ppm to about 10000 ppm.
We typically split the flow in two lines: one goes straight while the other is passing through a kind bubbler with water.
Then there can be different level of complexity:
- the flow can be divided using with manual or automated valves
- a water concentration analyser can be added to monitor or to control the valves splitting the flow
For flow above about 100 l/h, we think it is better to evaporate the water and mix the vapour with the gas. However, I don't think it is your case.
Below I put a screenshot of a typical system:
[cid:40c95693-5d1d-4b8b-b671-152ae1cd02b8]
Of course, we can discuss via phone or zoom. Let me know when it is fine with you.
Thanks a lot
Roberto
________________________________
De: "Bob Miller" <rmiller at jlab.org>
À: "Gabriel Charles" <gabriel.charles at ijclab.in2p3.fr>
Cc: "Raphael Dupre" <raphael.dupre at ijclab.in2p3.fr>
Envoyé: Mercredi 29 Novembre 2023 19:10:06
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
Please find attached the conceptual design for the ALERT gas system. I am waiting for the Detector Support Group to respond so they can set up the control system. My goal is to set up this system in the EEL building and have it tested before the ALERT detector arrives at JLab.
Please let me know if you have any comments or would like to have a meeting to discuss the system. There are some extra components that are installed in case another one fails, such as 2 pressure transducers, 2 supply MFCs, and the return solenoid valve.
Regards,
Bob
On 11/2/2023 11:23 AM, Gabriel Charles wrote:
Hi Bob,
Thank you again for today's meeting.
You can find the initial document about ALERT Gas System Requirements with the minutes of the meeting at the end of it.
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 1 69 15 64 42
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=DZkDQ7v9pBr2VrkCvqkG9mUYlSvKLkQ15Em7y-CrvDEFXEHqxz116K9jsxFZcjUl&s=b70ixCwDGsEOmhhHjzP8aWXVtEW1S67ugFVYN_GiKnw&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "Gabriel Charles" <gabriel.charles at ijclab.in2p3.fr><mailto:gabriel.charles at ijclab.in2p3.fr>
Cc: "Raphael Dupre" <raphael.dupre at ijclab.in2p3.fr><mailto:raphael.dupre at ijclab.in2p3.fr>
Envoyé: Jeudi 2 Novembre 2023 12:49:20
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
Thanks, I can meet at 10 am EDT.
-Bob
On 11/2/2023 4:56 AM, Gabriel Charles wrote:
Good morning Bob,
Thank you for your email.
We can meet today or tomorrow at any convenient time for you between 6 am and noon EDT.
Is there anything that would suit you?
We can meet here: https://ijclab.zoom.us/j/9524961034?pwd=RGZXcnJiRWJWVUdUU25GTk9rWWhoZz09<https://urldefense.proofpoint.com/v2/url?u=https-3A__ijclab.zoom.us_j_9524961034-3Fpwd-3DRGZXcnJiRWJWVUdUU25GTk9rWWhoZz09&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=sEVMIkmYVur6D5Q2V_7MAeWa0SzEim0YbCtm0jpMxNYMg70eJVeUd9gP59kfzxXv&s=6pLhKS1nqnEeLMv2R83WkQmnMuraBjN7qR32o8c67RU&e=>
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 1 69 15 64 42
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=sEVMIkmYVur6D5Q2V_7MAeWa0SzEim0YbCtm0jpMxNYMg70eJVeUd9gP59kfzxXv&s=dp2pGxtW89_clbB4LF-khtfLJSqhGR5ZN7WXjGCAuUQ&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "Gabriel Charles" <gabriel.charles at ijclab.in2p3.fr><mailto:gabriel.charles at ijclab.in2p3.fr>
Cc: "Raphael Dupre" <raphael.dupre at ijclab.in2p3.fr><mailto:raphael.dupre at ijclab.in2p3.fr>
Envoyé: Mardi 31 Octobre 2023 13:06:21
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
I have reviewed the ALERT gas system requirements and looked at similar systems - BONUS and MVT.
It would be good to have a Teams meeting to discuss the topic further; are you available this week? Please suggest a time and I will check my schedule.
I would like to discuss:
1. Mixing the He / CO2 or buying premix bottles with different mixtures
2. Pressure control of the detector gas
3. How to mix water vapor
4. The target gas system - I assume it will be the same as Bonus
5. The helium tube that extends past the detector, along the beam line - I assume it will be the same as Bonus
Thanks,
Bob
On 9/29/2023 1:13 AM, Gabriel Charles wrote:
Hi Bob,
Thank you for reaching out on this point.
It took me about a week to write down the description, ask a few questions, get the answers and produce the document attached.
As you will read, the flow rate will be close to the one used for BONuS12 and if possible we would like to keep a margin and be able to double. The main point being that if we can change the gas composition we could optimise the detector with real data.
Not sure if it will be necessary as we will likely used this only in case of problems.
About the pressure inside the chamber, our gas shell won't be rigid (about 100µm of Kapton) so I'm not sure that the absolute pressure can be controlled in the detector at the level I required initially.
Maybe we could try to do so before entering the detector such that we know that at least what is entering the detector is rather stable in pressure and temperature.
The attached document is a list of ideal requirements. If anything does not seem possible or useless to you, it's all open to discussion.
Also if something is not clear, please let me know and I'll do my best to clarify.
At some point, we will probably want someone from the slow control to join in the discussion.
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 1 69 15 64 42
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=Q0I_AlqUhrkCyastTc-ADsztzwmXUC0auLBvBn47Q5ftiQkqvC_nEzBOc8zp2XyZ&s=fa1rn7DLlxi57O151JUuK3SCjJ-cXLB6Iw21MeqhYsE&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "Gabriel Charles" <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
Cc: "Raphael Dupre" <raphael.dupre at ijclab.in2p3.fr><mailto:raphael.dupre at ijclab.in2p3.fr>
Envoyé: Vendredi 22 Septembre 2023 15:08:03
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
It has been a while since we talked about the ALERT gas system, but I have time to design it now.
Please see the attached P&ID for the Bonus experiment to use as a baseline. I assume the target gas circuit will be reused for ALERT, however, we should discuss the requirements for the drift chamber gas system.
Bonus used premixed gas for their detector. Do you know how much flow you need for your drift chamber? We may be able to use premix, or we could mix our own gas. If the flow rate is low, premix is more accurate and more reliable. We can also order different ratios of gas for the premix, depending on what you need. If the flow is high and requires frequent premix bottle changes, then we can use a mixing system.
My notes from 2021 said that you would like to keep the drift chamber pressure within a 30 mbar range. Please send the specifications that you have for the gas system, so I can review it, then we can meet.
Thanks,
Bob
On 1/8/2021 12:09 PM, Gabriel Charles wrote:
Dear Bob,
Thank you for your quick reply. What you proposed is perfect. If you agree, I will likely quote this exact email for the ERR that we will likely go through in the first half of the year.
I didn't think about the 100 feet in the Hall, it seems good to me, thanks a lot for the idea.
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 1 69 15 64 42
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncvm2rlHV-MV7JFc6UEKBC1w&m=mXT57Mz8idG25q_lROArBiDt2dQty834EmJ0LWJpzGb3W5FmoULW4uX0R5ME08qg&s=OCMWlB40aCNpiBKSUjku8L1uMzDwkCZgYXtZwoSZmTk&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "charlesg" <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
Envoyé: Vendredi 8 Janvier 2021 17:46:33
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
Happy New Year to you and your family as well.
I have not been working on this system, but I am confident that the design we discussed can be built to maintain the correct pressure in the drift chamber. The Hall temperature is consistent. If we mix the gas on the gas pad, the gas will be cold, but travel over 100 feet in the Hall before it gets to the drift chamber and should reach Hall temperature by then. We can calculate the gas temperature near the drift chamber to see if it will reach Hall temperature. If it is still too cold, we can install a radiator to warm up the gas.
If you are not in a hurry, I can design the full system, based on your specifications, during the summer when we are running experiments in the Hall.
Thanks
Bob
On 1/7/2021 4:07 AM, Gabriel Charles wrote:
Hi Bob,
First of all let me wish you a happy New Year for you and your relatives.
I wanted to ask you if you had time to look at a gas system design that will make sure that the pressure and temperature of the gas in our drift chamber will remain constant independantly of outside conditions?
We discussed that point some times ago and the more I read about it, the more I believe it is necessary. We could allow variations of 1 degre Celsius and about 0.1 bar, that is 1.5 psi.
What do you think?
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 1 69 15 64 42
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncg&m=xd3X2vVHD5H7KjOLGw5nr8XCz4NKG92ZGCF5Hy8A0Hg&s=SrCm1tYmWq9wSEGQtm9bVIvDvQVInbbg844e_VBtQNw&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "charlesg" <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
Envoyé: Jeudi 16 Juillet 2020 13:24:19
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
Today is fine. I have attached drawings for the Bonus and MVT gas systems. We can use these systems for ALERT or build another system.
Regards,
Bob
On 7/16/2020 5:23 AM, Gabriel Charles wrote:
Hi Bob,
Indeed, what about today at 8 am JLab time, if it's too late, no problem it can be tomorrow.
Here is a BlueJeans link: https://bluejeans.com/7572897347/4931<https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_7572897347_4931&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncg&m=Vg1kYRvkB2ph_9LWenXVSvJ0P--OYicrDwC9RRPSIwc&s=91Psm_pjT9N79ZYJJN4bFhmA9VTpdDwnUaCXcVVz3JA&e=>
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 6 27 12 14 71
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncg&m=Vg1kYRvkB2ph_9LWenXVSvJ0P--OYicrDwC9RRPSIwc&s=-rIMnfEab2_7TCfKyd_x9PR2G-Lme82rlzDLU7sdVj8&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "charlesg" <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
Envoyé: Mercredi 15 Juillet 2020 20:04:49
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
Looks like we missed the previous dates. How about Thursday or Friday this week at 8 am JLab time?
Thanks
Bob
On 7/1/2020 5:07 AM, Gabriel Charles wrote:
Hi Bob,
Thank you for your availability. I don't know if I have access to the calendar you are refering too, here is what I could find: https://www.jlab.org/jlab-calendar
July 6, 7, 8 and 9 I'm available from 8 am to noon so if any of this time is good for you, we can meet via BlueJeans.
Have a nice day,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 6 27 12 14 71
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncg&m=iNG3YOWApgBvTOCnhF_IWjUsL3dEUr0lytA8Wvu80QU&s=QAxuXLayDXqxRn4cEE9JSiGO0Px5U44qBFWgB9HXpew&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "charlesg" <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
Envoyé: Mardi 30 Juin 2020 18:58:13
Objet: Re: [EXTERNAL] Project ALERT: gas system
Hi Gabriel,
Yes, I am available to discuss the gas system for ALERT. If you have access to the JLab calendar, you can set up a meeting any time that is open. If not, suggest a time and I will check the calendar. I will be out of the office July 3, 10, and 13.
Regards,
Bob
On 6/30/2020 6:47 AM, Gabriel Charles wrote:
Good morning Bob,
I've been looking for what is done to regulate the gas pressure for the ALICE TPC. It is way overkilling it for us. Though, maybe we could try to follow some of the ideas to ensure stable pressure and temperature.
Would you be available to discuss about it? Clearly, I am not a specialist and hence have no idea if it is managable it terms of price or time. Moreover, if it is too expensive or time consumming, the effort won't worth the result in terms of physics.
Though, we could have an easy discussion about it and see what you think about it.
Here is xhat I found: https://alice-tpc.web.cern.ch/content/tpc-gas-system<https://urldefense.proofpoint.com/v2/url?u=https-3A__alice-2Dtpc.web.cern.ch_content_tpc-2Dgas-2Dsystem&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncg&m=La74auJj2zLD6uRRCm6_0FpewduMkGvaW-uJXLhcb1w&s=PTgrkKrM6Usw8qgJ5dwJsF8No7wV0OdhmyPIAQJV5tY&e=>
Once more, it is too much for our needs, I'm just wondering if some of the ideas could be replicated for ALERT (I guess that afterwards, other gaseous detectors could make good use of it though).
Best regards,
--
Gabriel CHARLES
IJCLab/IN2P3/CNRS, University Paris-Saclay
+33 6 27 12 14 71
https://www.instagram.com/particledetectors/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=plE8x1Qj6-oBUv4DJULncg&m=La74auJj2zLD6uRRCm6_0FpewduMkGvaW-uJXLhcb1w&s=K0sBejmw1SA5kPquPmdShTlCf4-o4-zj8UqKc7vU2IM&e=>
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: "charlesg" <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
Cc: "Ruben Fair" <rfair at jlab.org><mailto:rfair at jlab.org>, "stepanya" <stepanya at jlab.org><mailto:stepanya at jlab.org>, "Eric Sun" <qsun at jlab.org><mailto:qsun at jlab.org>
Envoyé: Mardi 10 Décembre 2019 21:19:54
Objet: Re: Re : [EXTERNAL] EDDY current for ALERT
Hi Gabriel,
It is best to discuss materials in detail during the meeting when everyone understands the detector and where the material is in the magnetic field.
In general, the material with the lower electrical conductivity will produce less eddy current forces during a magnet quench.
Regards,
Bob
On 12/10/2019 12:13 PM, Gabriel Charles wrote:
Hi Bob,
Thank you very much for your quick reply. We'll do this when we will know more precisely the design of our detector.
We were wondering if between INOX or aluminum one was better? And if you knew that some carbon is better than other carbon as we will have a part of a flange in carbon.
Have a good day,
--
Gabriel CHARLES
R&D detector specialist
Institut de Physique Nucléaire d'Orsay
+33 1 69 15 64 42
________________________________
De: "Bob Miller" <rmiller at jlab.org><mailto:rmiller at jlab.org>
À: charlesg at ipno.in2p3.fr<mailto:charlesg at ipno.in2p3.fr>
Cc: "Ruben Fair" <rfair at jlab.org><mailto:rfair at jlab.org>, "Stepan Stepanyan" <stepanya at jlab.org><mailto:stepanya at jlab.org>, "Eric Sun" <qsun at jlab.org><mailto:qsun at jlab.org>
Envoyé: Mardi, Décembre 10, 2019 05:45:36 PM
Objet: Fwd: Re: Re: [EXTERNAL] EDDY current for ALERT
Hi Gabriel,
Ruben Fair is our magnet engineering manager and Eric Sun is a magnet engineer that can help with the ALERT detector.
Please set up a phone meeting with them when you are ready to discuss the details of the detector.
Regards,
Bob
-------- Forwarded Message --------
Subject:
Re: Re: [EXTERNAL] EDDY current for ALERT
Date:
Tue, 10 Dec 2019 16:28:41 +0000
From:
Ruben Fair <rfair at jlab.org><mailto:rfair at jlab.org>
To:
Bob Miller <rmiller at jlab.org><mailto:rmiller at jlab.org>
Hi Bob,
Yes - Eric Sun will be able to help.
Let me know when they are ready to sit down with Eric and myself to discuss requirements and timescales.
Cheers
Ruben
________________________________
From: Bob Miller <rmiller at jlab.org><mailto:rmiller at jlab.org>
Sent: Tuesday, December 10, 2019 11:04 AM
To: Ruben Fair <rfair at jlab.org><mailto:rfair at jlab.org>
Subject: Fwd: Re: [EXTERNAL] EDDY current for ALERT
Hi Ruben,
We have a detector that will be installed in Hall B in the future that will replace the SVT, therefore it will be in the center of the solenoid. The solenoid will be used at full field for this experiment called ALERT.
Do you have someone that can work with the ALERT engineers to choose the correct materials and do the eddy current analysis so the detector will be safe to use in the solenoid?
Thanks,
Bob
-------- Forwarded Message --------
Subject:
Re: [EXTERNAL] EDDY current for ALERT
Date:
Tue, 10 Dec 2019 10:43:59 -0500
From:
Stepan Stepanyan <stepanya at jlab.org><mailto:stepanya at jlab.org>
To:
Gabriel Charles <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr>
CC:
Bob Miller <rmiller at jlab.org><mailto:rmiller at jlab.org>
Gabriel,
I do not know any such person who checks everyones setup for eddy currents. Each group does it for their setup. You should find an engineer who can calculate the design and asses the effect of solenoid quench on the detector.I am cc-ing Bob on this email as he may know more how other detector did this.
Stepan
On Dec 10, 2019, at 7:27 AM, Gabriel Charles <charlesg at ipno.in2p3.fr><mailto:charlesg at ipno.in2p3.fr> wrote:
Dear Stepan,
During the ERR we had questions about the EDDY current. So far we were just planning to be careful about it without doing any specific simulations.
Our design is not yet finalized but we would like to start the discussions about this now or in January if possible.
What is the usual procedure ? Is there someone at JLab checking every setup that will be placed in the magnet? If yes, we would be happy to discuss with this person the best choice of material, the dimension limit etc. to avoid drawing something that eventually would not be accepted and also simply discuss with an expert.
Have a nice day,
--
Gabriel CHARLES
R&D detector specialist
Institut de Physique Nucléaire d'Orsay
+33 1 69 15 64 42
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
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