From mcmullen at jlab.org Thu Sep 5 15:54:04 2024 From: mcmullen at jlab.org (Marc Mcmullen) Date: Thu, 5 Sep 2024 19:54:04 +0000 Subject: [dsg-hallb_gas] BoNuS Target Straw testing Message-ID: Hi Bob, Per your request, I have increased the time limit which controls the frequency of purging (with Nitrogen) from 20 minutes to 3 hours. It will empty and fill 5 times (~2 minutes per exhaust, ~1minute per fill) in roughly 15 minutes. After that it will wait the balance of 3 hours to start the cycle again. I will monitor the progress remotely. The system has been running for about 6 hours without issue at the 20 minute frequency. I will send an update if there are any issues. Regards, Marc -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: BoNuS GUI with labels.jpg Type: image/jpeg Size: 191463 bytes Desc: BoNuS GUI with labels.jpg URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: BoNuS GUI and target straw_labeled.jpg Type: image/jpeg Size: 154965 bytes Desc: BoNuS GUI and target straw_labeled.jpg URL: From rmiller at jlab.org Thu Sep 5 15:59:18 2024 From: rmiller at jlab.org (Bob Miller) Date: Thu, 5 Sep 2024 19:59:18 +0000 Subject: [dsg-hallb_gas] BoNuS Target Straw testing In-Reply-To: References: Message-ID: Thanks for your help Marc Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: dsg-hallb_gas on behalf of Marc Mcmullen via dsg-hallb_gas Sent: Thursday, September 5, 2024 3:54 PM To: Marc Mcmullen via dsg-hallb_gas Subject: [dsg-hallb_gas] BoNuS Target Straw testing Hi Bob, Per your request, I have increased the time limit which controls the frequency of purging (with Nitrogen) from 20 minutes to 3 hours. It will empty and fill 5 times (~2 minutes per exhaust, ~1minute per fill) in roughly 15 minutes. After that it will wait the balance of 3 hours to start the cycle again. I will monitor the progress remotely. The system has been running for about 6 hours without issue at the 20 minute frequency. I will send an update if there are any issues. Regards, Marc -------------- next part -------------- An HTML attachment was scrubbed... URL: From mcmullen at jlab.org Fri Sep 20 10:31:43 2024 From: mcmullen at jlab.org (Marc Mcmullen) Date: Fri, 20 Sep 2024 14:31:43 +0000 Subject: [dsg-hallb_gas] ALERT in Clean Room In-Reply-To: References: <407104460.118248816.1714743504138.JavaMail.zimbra@ijclab.in2p3.fr> <23281569.690679549.1717682656780.JavaMail.zimbra@ijclab.in2p3.fr> <2137276631.425883603.1726840146480.JavaMail.zimbra@ijclab.in2p3.fr> Message-ID: Hi Bob, I expect that the pressure controls for the ALERT DC will be ready for testing by 10/30/24. It should take at least a few days to modify the current flow control code to read the two pressure transducers on the tank and control the 24VDC solenoid. Today I will work on getting the hardware connected (3 MFCs, 1 solenoid). Can you send the information on the pump or fan you intend to use for exhaust pressure. As for the Target straw test, it has been running for ~ 300 hours without any leaks. Marc ________________________________ From: Bob Miller Sent: Friday, September 20, 2024 10:08 AM To: Gabriel Charles Cc: Denny Insley ; Marc Mcmullen ; Morgan Cook IV Subject: Re: ALERT in Clean Room Hi Gabriel, The gas panel has been modified to operate at 1050 mbar. It will be fully assembled on Monday. Marc is working on the controls. I am not sure when the controls will be ready, but it should be soon. We were not aware of your need for the gas panel and it is not ready to use. I will let you know when it is ready and tested. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Gabriel Charles Sent: Friday, September 20, 2024 9:49 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Bob and Morgan, The Orsay guys in the EEL building are ready to perform a leak test on the detector. The gas bench has been modified since last time. Could you find time to show them how to operate it, please? They are ready to do it already. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Morgan Cook, IV" ?: "Gabriel Charles" Cc: "Bob Miller" , "Denny Insley" Envoy?: Vendredi 7 Juin 2024 20:39:33 Objet: Re: ALERT in Clean Room Hi Gabriel, I connected a bottle sometime before lunch so you should have some flow through the system. -M ________________________________ From: Morgan Cook IV Sent: Friday, June 7, 2024 7:49 AM To: Gabriel Charles Cc: Bob Miller ; Denny Insley Subject: Re: ALERT in Clean Room Hi Gabriel, The was a mix-up with both the gas company and Procurement that needed to get resolved. Gas is here now, I'll get one on-line today, hopefully this morning sometime. I'll let you know. Regards, Morgan ________________________________ From: Gabriel Charles Sent: Thursday, June 6, 2024 10:04 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Morgan, Any news from the bottles? A team from Orsay will at JLab next week, it would be perfect is the bottles are in place. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Morgan Cook, IV" ?: "Gabriel Charles" Cc: "Bob Miller" , "Denny Insley" Envoy?: Jeudi 9 Mai 2024 15:42:39 Objet: Re: ALERT in Clean Room Hi Gabriel, 4 bottles of He-CO2 80/20 have been ordered. They're supposed to be delivered by the end of the month, 5/31. Regards, Morgan ________________________________ From: Gabriel Charles Sent: Friday, May 3, 2024 9:38 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi, We see in our hv setup unstable conditions, voltages that hold at some point do not hold 2 hours later, same goes for the signal. Then, when a new bottle is installed, the HV can reach higher values. Though, we have seen signal with this gas mixture when the new bottle was installed! It is a great news. Unfortunately, after a few hours of tests the signal was not good anymore and more spark would occur. Due to these sparks we have probably burnt one Dream chip (we still have many spares) but I prefer to stop the hv for the moment. At this point, I suspect the inhomegeneity of the gas mixture to be responsible for voltage unstabilities. As you already mentionned that you want to order new bottles, I would appreciate if indeed you can do so and we will resume our tests when the bottles will be available. It will also depends on the availability of the scintillators that are used by other experiments. Thank you for your strong and quick support during this first test period, it is appreciated. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Morgan Cook, IV" ?: "Bob Miller" , "Gabriel Charles" Cc: "Denny Insley" Envoy?: Vendredi 3 Mai 2024 14:11:25 Objet: Re: ALERT in Clean Room that's what I was afraid of; that first bottle seemed to go pretty quickly. Most likely, they've lost some pressure since we bought them for BONUS. I'll check the ones on the pad and order some more. -M ________________________________ From: Bob Miller Sent: Thursday, May 2, 2024 2:56 PM To: Morgan Cook IV ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Hi Morgan, Based on the advertised volume of 220 cubic feet, the bottles should have 1800 psig when full. The bottle you connected with 200 psig will only last 2 days. Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Morgan Cook IV Sent: Thursday, May 2, 2024 11:01 AM To: Bob Miller ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room lol, yes. one is connected and turned on. It's only showing a couple of hundred psi though. I don't remember how much pressure the He/CO2 usually have. ________________________________ From: Bob Miller Sent: Thursday, May 2, 2024 10:36 AM To: Morgan Cook IV ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Thanks Morgan, Is one connected to the gas panel and turned on? Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Morgan Cook IV Sent: Thursday, May 2, 2024 10:34 AM To: Bob Miller ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Hi Bob, I put 2 bottles in the clean room, and we have 2 more on the gas pad. Are we planning on testing/purging the detector throughout the SAD? If so, I'll need to order more but am hesitant to if the mix is going to change. Regards, Morgan ________________________________ From: Bob Miller Sent: Thursday, May 2, 2024 9:27 AM To: Gabriel Charles Cc: Denny Insley ; Morgan Cook IV Subject: Re: ALERT in Clean Room Hi Gabriel, When the gas mixture if finalized, we can order more mixed gas. * K bottles of 80He/20CO2 * Linde quote $560 each, 21 day lead time * 220 Cubic feet = 220 * 28.31 = 6228 liters * detector flow of 15 lph * 6228L/15L/hrs = 415 hrs = 17 days So we will estimate 2 bottles per month and order 4 bottles to start the experiment. As we use the gas, we will order more bottles. Regards, Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Gabriel Charles Sent: Thursday, May 2, 2024 9:07 AM To: Bob Miller Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Bob, I got your message after I replied. Thank you for the new bottle. That raises the question of the cost of the bottles by the way. As far I understand, for now, we are using bottles used for BONuS12 experiment. What will happen when new bottles will be required? Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Bob Miller" ?: "Denny Insley" , "Morgan Cook, IV" Cc: "Marc Mcmullen via dsg-hallb_gas" , "Gabriel Charles" , "Marc Mcmullen" Envoy?: Jeudi 2 Mai 2024 14:56:24 Objet: Re: ALERT in Clean Room Hi Denny, Please install a full K bottle of 80% Helium / 20% CO2 in the clean room. Turn on the bottle when finished so ALERT can continue their testing. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 Bob Miller Hall B Lead Engineer (757) 822-9586 -------------- next part -------------- An HTML attachment was scrubbed... URL: From gabriel.charles at ijclab.in2p3.fr Fri Sep 20 10:40:42 2024 From: gabriel.charles at ijclab.in2p3.fr (Gabriel Charles) Date: Fri, 20 Sep 2024 16:40:42 +0200 (CEST) Subject: [dsg-hallb_gas] [EXTERNAL] Re: ALERT in Clean Room In-Reply-To: References: <23281569.690679549.1717682656780.JavaMail.zimbra@ijclab.in2p3.fr> <2137276631.425883603.1726840146480.JavaMail.zimbra@ijclab.in2p3.fr> Message-ID: <561298993.426384745.1726843242967.JavaMail.zimbra@ijclab.in2p3.fr> Hi, Thank you Marc for your quick answer. The hard part of the system is to control the absolute pressure in the detector. Is there a quick way to test it at higher pressure than the atmospheric one or at atmospheric pressure? Maybe with just a debit meter and bubbler at the gas output of the detector? What do you think? Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p1dQ70jJ84GLPYZU0DoNZ0IWpYC-MmB7Q-QDdgo9ZoM&m=8zsege5PJQjzvNOlR8RvPndFwWiFTW27-DCAo4WD7QSoewLpTdLEjpNDfZSeJpo_&s=2nOhVnkI-ZIhQyaXdK5N-5990O5iCSR23rUus4kfZjA&e= De: "Marc Mcmullen" ?: "Bob Miller" , "Gabriel Charles" Cc: "Denny Insley" , "Morgan Cook, IV" , "Marc Mcmullen via dsg-hallb_gas" , "Patrizia Rossi" Envoy?: Vendredi 20 Septembre 2024 16:31:43 Objet: Re: ALERT in Clean Room Hi Bob, I expect that the pressure controls for the ALERT DC will be ready for testing by 10/30/24. It should take at least a few days to modify the current flow control code to read the two pressure transducers on the tank and control the 24VDC solenoid. Today I will work on getting the hardware connected (3 MFCs, 1 solenoid). Can you send the information on the pump or fan you intend to use for exhaust pressure. As for the Target straw test, it has been running for ~ 300 hours without any leaks. Marc From: Bob Miller Sent: Friday, September 20, 2024 10:08 AM To: Gabriel Charles Cc: Denny Insley ; Marc Mcmullen ; Morgan Cook IV Subject: Re: ALERT in Clean Room Hi Gabriel, The gas panel has been modified to operate at 1050 mbar. It will be fully assembled on Monday. Marc is working on the controls. I am not sure when the controls will be ready, but it should be soon. We were not aware of your need for the gas panel and it is not ready to use. I will let you know when it is ready and tested. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 From: Gabriel Charles Sent: Friday, September 20, 2024 9:49 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Bob and Morgan, The Orsay guys in the EEL building are ready to perform a leak test on the detector. The gas bench has been modified since last time. Could you find time to show them how to operate it, please? They are ready to do it already. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p1dQ70jJ84GLPYZU0DoNZ0IWpYC-MmB7Q-QDdgo9ZoM&m=8zsege5PJQjzvNOlR8RvPndFwWiFTW27-DCAo4WD7QSoewLpTdLEjpNDfZSeJpo_&s=2nOhVnkI-ZIhQyaXdK5N-5990O5iCSR23rUus4kfZjA&e= De: "Morgan Cook, IV" ?: "Gabriel Charles" Cc: "Bob Miller" , "Denny Insley" Envoy?: Vendredi 7 Juin 2024 20:39:33 Objet: Re: ALERT in Clean Room Hi Gabriel, I connected a bottle sometime before lunch so you should have some flow through the system. -M From: Morgan Cook IV Sent: Friday, June 7, 2024 7:49 AM To: Gabriel Charles Cc: Bob Miller ; Denny Insley Subject: Re: ALERT in Clean Room Hi Gabriel, The was a mix-up with both the gas company and Procurement that needed to get resolved. Gas is here now, I'll get one on-line today, hopefully this morning sometime. I'll let you know. Regards, Morgan From: Gabriel Charles Sent: Thursday, June 6, 2024 10:04 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Morgan, Any news from the bottles? A team from Orsay will at JLab next week, it would be perfect is the bottles are in place. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p1dQ70jJ84GLPYZU0DoNZ0IWpYC-MmB7Q-QDdgo9ZoM&m=8zsege5PJQjzvNOlR8RvPndFwWiFTW27-DCAo4WD7QSoewLpTdLEjpNDfZSeJpo_&s=2nOhVnkI-ZIhQyaXdK5N-5990O5iCSR23rUus4kfZjA&e= De: "Morgan Cook, IV" ?: "Gabriel Charles" Cc: "Bob Miller" , "Denny Insley" Envoy?: Jeudi 9 Mai 2024 15:42:39 Objet: Re: ALERT in Clean Room Hi Gabriel, 4 bottles of He-CO2 80/20 have been ordered. They're supposed to be delivered by the end of the month, 5/31. Regards, Morgan From: Gabriel Charles Sent: Friday, May 3, 2024 9:38 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi, We see in our hv setup unstable conditions, voltages that hold at some point do not hold 2 hours later, same goes for the signal. Then, when a new bottle is installed, the HV can reach higher values. Though, we have seen signal with this gas mixture when the new bottle was installed! It is a great news. Unfortunately, after a few hours of tests the signal was not good anymore and more spark would occur. Due to these sparks we have probably burnt one Dream chip (we still have many spares) but I prefer to stop the hv for the moment. At this point, I suspect the inhomegeneity of the gas mixture to be responsible for voltage unstabilities. As you already mentionned that you want to order new bottles, I would appreciate if indeed you can do so and we will resume our tests when the bottles will be available. It will also depends on the availability of the scintillators that are used by other experiments. Thank you for your strong and quick support during this first test period, it is appreciated. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p1dQ70jJ84GLPYZU0DoNZ0IWpYC-MmB7Q-QDdgo9ZoM&m=8zsege5PJQjzvNOlR8RvPndFwWiFTW27-DCAo4WD7QSoewLpTdLEjpNDfZSeJpo_&s=2nOhVnkI-ZIhQyaXdK5N-5990O5iCSR23rUus4kfZjA&e= De: "Morgan Cook, IV" ?: "Bob Miller" , "Gabriel Charles" Cc: "Denny Insley" Envoy?: Vendredi 3 Mai 2024 14:11:25 Objet: Re: ALERT in Clean Room that's what I was afraid of; that first bottle seemed to go pretty quickly. Most likely, they've lost some pressure since we bought them for BONUS. I'll check the ones on the pad and order some more. -M From: Bob Miller Sent: Thursday, May 2, 2024 2:56 PM To: Morgan Cook IV ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Hi Morgan, Based on the advertised volume of 220 cubic feet, the bottles should have 1800 psig when full. The bottle you connected with 200 psig will only last 2 days. Bob Miller Hall B Lead Engineer (757) 822-9586 From: Morgan Cook IV Sent: Thursday, May 2, 2024 11:01 AM To: Bob Miller ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room lol, yes. one is connected and turned on. It's only showing a couple of hundred psi though. I don't remember how much pressure the He/CO2 usually have. From: Bob Miller Sent: Thursday, May 2, 2024 10:36 AM To: Morgan Cook IV ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Thanks Morgan, Is one connected to the gas panel and turned on? Bob Miller Hall B Lead Engineer (757) 822-9586 From: Morgan Cook IV Sent: Thursday, May 2, 2024 10:34 AM To: Bob Miller ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Hi Bob, I put 2 bottles in the clean room, and we have 2 more on the gas pad. Are we planning on testing/purging the detector throughout the SAD? If so, I'll need to order more but am hesitant to if the mix is going to change. Regards, Morgan From: Bob Miller Sent: Thursday, May 2, 2024 9:27 AM To: Gabriel Charles Cc: Denny Insley ; Morgan Cook IV Subject: Re: ALERT in Clean Room Hi Gabriel, When the gas mixture if finalized, we can order more mixed gas. * K bottles of 80He/20CO2 * Linde quote $560 each, 21 day lead time * 220 Cubic feet = 220 * 28.31 = 6228 liters * detector flow of 15 lph * 6228L/15L/hrs = 415 hrs = 17 days So we will estimate 2 bottles per month and order 4 bottles to start the experiment. As we use the gas, we will order more bottles. Regards, Bob Miller Hall B Lead Engineer (757) 822-9586 From: Gabriel Charles Sent: Thursday, May 2, 2024 9:07 AM To: Bob Miller Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Bob, I got your message after I replied. Thank you for the new bottle. That raises the question of the cost of the bottles by the way. As far I understand, for now, we are using bottles used for BONuS12 experiment. What will happen when new bottles will be required? Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_particledetectors_&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p1dQ70jJ84GLPYZU0DoNZ0IWpYC-MmB7Q-QDdgo9ZoM&m=8zsege5PJQjzvNOlR8RvPndFwWiFTW27-DCAo4WD7QSoewLpTdLEjpNDfZSeJpo_&s=2nOhVnkI-ZIhQyaXdK5N-5990O5iCSR23rUus4kfZjA&e= De: "Bob Miller" ?: "Denny Insley" , "Morgan Cook, IV" Cc: "Marc Mcmullen via dsg-hallb_gas" , "Gabriel Charles" , "Marc Mcmullen" Envoy?: Jeudi 2 Mai 2024 14:56:24 Objet: Re: ALERT in Clean Room Hi Denny, Please install a full K bottle of 80% Helium / 20% CO2 in the clean room. Turn on the bottle when finished so ALERT can continue their testing. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 BQ_BEGIN Bob Miller Hall B Lead Engineer (757) 822-9586 BQ_END -------------- next part -------------- An HTML attachment was scrubbed... URL: From mcmullen at jlab.org Fri Sep 20 10:53:23 2024 From: mcmullen at jlab.org (Marc Mcmullen) Date: Fri, 20 Sep 2024 14:53:23 +0000 Subject: [dsg-hallb_gas] ALERT in Clean Room In-Reply-To: <561298993.426384745.1726843242967.JavaMail.zimbra@ijclab.in2p3.fr> References: <23281569.690679549.1717682656780.JavaMail.zimbra@ijclab.in2p3.fr> <2137276631.425883603.1726840146480.JavaMail.zimbra@ijclab.in2p3.fr> <561298993.426384745.1726843242967.JavaMail.zimbra@ijclab.in2p3.fr> Message-ID: Hi Gabriel, Bob would probably be better suited to answer a question on manually controlling the detector. I will update you on the progress of the pressure controls as they come along. Marc ________________________________ From: Gabriel Charles Sent: Friday, September 20, 2024 10:40 AM To: Marc Mcmullen ; Bob Miller Cc: Denny Insley ; Morgan Cook IV ; Marc Mcmullen via dsg-hallb_gas ; Patrizia Rossi Subject: [EXTERNAL] Re: ALERT in Clean Room Hi, Thank you Marc for your quick answer. The hard part of the system is to control the absolute pressure in the detector. Is there a quick way to test it at higher pressure than the atmospheric one or at atmospheric pressure? Maybe with just a debit meter and bubbler at the gas output of the detector? What do you think? Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Marc Mcmullen" ?: "Bob Miller" , "Gabriel Charles" Cc: "Denny Insley" , "Morgan Cook, IV" , "Marc Mcmullen via dsg-hallb_gas" , "Patrizia Rossi" Envoy?: Vendredi 20 Septembre 2024 16:31:43 Objet: Re: ALERT in Clean Room Hi Bob, I expect that the pressure controls for the ALERT DC will be ready for testing by 10/30/24. It should take at least a few days to modify the current flow control code to read the two pressure transducers on the tank and control the 24VDC solenoid. Today I will work on getting the hardware connected (3 MFCs, 1 solenoid). Can you send the information on the pump or fan you intend to use for exhaust pressure. As for the Target straw test, it has been running for ~ 300 hours without any leaks. Marc ________________________________ From: Bob Miller Sent: Friday, September 20, 2024 10:08 AM To: Gabriel Charles Cc: Denny Insley ; Marc Mcmullen ; Morgan Cook IV Subject: Re: ALERT in Clean Room Hi Gabriel, The gas panel has been modified to operate at 1050 mbar. It will be fully assembled on Monday. Marc is working on the controls. I am not sure when the controls will be ready, but it should be soon. We were not aware of your need for the gas panel and it is not ready to use. I will let you know when it is ready and tested. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Gabriel Charles Sent: Friday, September 20, 2024 9:49 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Bob and Morgan, The Orsay guys in the EEL building are ready to perform a leak test on the detector. The gas bench has been modified since last time. Could you find time to show them how to operate it, please? They are ready to do it already. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Morgan Cook, IV" ?: "Gabriel Charles" Cc: "Bob Miller" , "Denny Insley" Envoy?: Vendredi 7 Juin 2024 20:39:33 Objet: Re: ALERT in Clean Room Hi Gabriel, I connected a bottle sometime before lunch so you should have some flow through the system. -M ________________________________ From: Morgan Cook IV Sent: Friday, June 7, 2024 7:49 AM To: Gabriel Charles Cc: Bob Miller ; Denny Insley Subject: Re: ALERT in Clean Room Hi Gabriel, The was a mix-up with both the gas company and Procurement that needed to get resolved. Gas is here now, I'll get one on-line today, hopefully this morning sometime. I'll let you know. Regards, Morgan ________________________________ From: Gabriel Charles Sent: Thursday, June 6, 2024 10:04 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Morgan, Any news from the bottles? A team from Orsay will at JLab next week, it would be perfect is the bottles are in place. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Morgan Cook, IV" ?: "Gabriel Charles" Cc: "Bob Miller" , "Denny Insley" Envoy?: Jeudi 9 Mai 2024 15:42:39 Objet: Re: ALERT in Clean Room Hi Gabriel, 4 bottles of He-CO2 80/20 have been ordered. They're supposed to be delivered by the end of the month, 5/31. Regards, Morgan ________________________________ From: Gabriel Charles Sent: Friday, May 3, 2024 9:38 AM To: Morgan Cook IV Cc: Bob Miller ; Denny Insley Subject: [EXTERNAL] Re: ALERT in Clean Room Hi, We see in our hv setup unstable conditions, voltages that hold at some point do not hold 2 hours later, same goes for the signal. Then, when a new bottle is installed, the HV can reach higher values. Though, we have seen signal with this gas mixture when the new bottle was installed! It is a great news. Unfortunately, after a few hours of tests the signal was not good anymore and more spark would occur. Due to these sparks we have probably burnt one Dream chip (we still have many spares) but I prefer to stop the hv for the moment. At this point, I suspect the inhomegeneity of the gas mixture to be responsible for voltage unstabilities. As you already mentionned that you want to order new bottles, I would appreciate if indeed you can do so and we will resume our tests when the bottles will be available. It will also depends on the availability of the scintillators that are used by other experiments. Thank you for your strong and quick support during this first test period, it is appreciated. Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Morgan Cook, IV" ?: "Bob Miller" , "Gabriel Charles" Cc: "Denny Insley" Envoy?: Vendredi 3 Mai 2024 14:11:25 Objet: Re: ALERT in Clean Room that's what I was afraid of; that first bottle seemed to go pretty quickly. Most likely, they've lost some pressure since we bought them for BONUS. I'll check the ones on the pad and order some more. -M ________________________________ From: Bob Miller Sent: Thursday, May 2, 2024 2:56 PM To: Morgan Cook IV ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Hi Morgan, Based on the advertised volume of 220 cubic feet, the bottles should have 1800 psig when full. The bottle you connected with 200 psig will only last 2 days. Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Morgan Cook IV Sent: Thursday, May 2, 2024 11:01 AM To: Bob Miller ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room lol, yes. one is connected and turned on. It's only showing a couple of hundred psi though. I don't remember how much pressure the He/CO2 usually have. ________________________________ From: Bob Miller Sent: Thursday, May 2, 2024 10:36 AM To: Morgan Cook IV ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Thanks Morgan, Is one connected to the gas panel and turned on? Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Morgan Cook IV Sent: Thursday, May 2, 2024 10:34 AM To: Bob Miller ; Gabriel Charles Cc: Denny Insley Subject: Re: ALERT in Clean Room Hi Bob, I put 2 bottles in the clean room, and we have 2 more on the gas pad. Are we planning on testing/purging the detector throughout the SAD? If so, I'll need to order more but am hesitant to if the mix is going to change. Regards, Morgan ________________________________ From: Bob Miller Sent: Thursday, May 2, 2024 9:27 AM To: Gabriel Charles Cc: Denny Insley ; Morgan Cook IV Subject: Re: ALERT in Clean Room Hi Gabriel, When the gas mixture if finalized, we can order more mixed gas. * K bottles of 80He/20CO2 * Linde quote $560 each, 21 day lead time * 220 Cubic feet = 220 * 28.31 = 6228 liters * detector flow of 15 lph * 6228L/15L/hrs = 415 hrs = 17 days So we will estimate 2 bottles per month and order 4 bottles to start the experiment. As we use the gas, we will order more bottles. Regards, Bob Miller Hall B Lead Engineer (757) 822-9586 ________________________________ From: Gabriel Charles Sent: Thursday, May 2, 2024 9:07 AM To: Bob Miller Subject: [EXTERNAL] Re: ALERT in Clean Room Hi Bob, I got your message after I replied. Thank you for the new bottle. That raises the question of the cost of the bottles by the way. As far I understand, for now, we are using bottles used for BONuS12 experiment. What will happen when new bottles will be required? Have a nice day, -- Gabriel CHARLES IJCLab/IN2P3/CNRS, University Paris-Saclay +33 1 69 15 64 42 Pictures about detectors: https://www.instagram.com/particledetectors/ ________________________________ De: "Bob Miller" ?: "Denny Insley" , "Morgan Cook, IV" Cc: "Marc Mcmullen via dsg-hallb_gas" , "Gabriel Charles" , "Marc Mcmullen" Envoy?: Jeudi 2 Mai 2024 14:56:24 Objet: Re: ALERT in Clean Room Hi Denny, Please install a full K bottle of 80% Helium / 20% CO2 in the clean room. Turn on the bottle when finished so ALERT can continue their testing. Thanks, Bob Miller Hall B Lead Engineer (757) 822-9586 Bob Miller Hall B Lead Engineer (757) 822-9586 -------------- next part -------------- An HTML attachment was scrubbed... URL: