Tandem Accelerator - Revision history

Iwiedenhoever at 11:07, 27 September 2023

2023-09-27T11:07:11Z

← Older revision		Revision as of 07:07, 27 September 2023
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	[[File:TandemVault.png\|500px\|thumb\|right]]		[[File:TandemVault.png\|500px\|thumb\|right]]

	{{Warning \| ~~NEED~~ PROOF READING }}		{{Warning \| NEEDS PROOF READING }}

	= Tandem Beamline SF6-Gas Security Ball Valves =		= Tandem Beamline SF6-Gas Security Ball Valves =

Rtang at 21:54, 1 May 2022

2022-05-01T21:54:12Z

← Older revision		Revision as of 17:54, 1 May 2022
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	[[File:TandemVault.png\|500px\|thumb\|right]]		[[File:TandemVault.png\|500px\|thumb\|right]]

	~~<span style="color:red">'''~~NEED PROOF READING~~</span>~~		{{Warning \| NEED PROOF READING }}

	= Tandem Beamline SF6-Gas Security Ball Valves =		= Tandem Beamline SF6-Gas Security Ball Valves =

Rtang: /* Contact */

2022-04-25T19:17:35Z

Contact

← Older revision		Revision as of 15:17, 25 April 2022
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	= Contact =		= Contact =
	Lagy Baby mailto:lbaby@fsu.edu		* Lagy Baby mailto:lbaby@fsu.edu
	Ingo Wiedenhoever mailto:iwiedenhoever@fsu.edu		* Ingo Wiedenhoever mailto:iwiedenhoever@fsu.edu

Rtang: /* Power Failure Procedures */

2022-04-25T19:17:23Z

Power Failure Procedures

← Older revision		Revision as of 15:17, 25 April 2022
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	# The pumps in the target room should be checked to ensure that they are running normally. Restart or close off as necessary.		# The pumps in the target room should be checked to ensure that they are running normally. Restart or close off as necessary.
	# When mains voltage is restored the changeover breaker will wait a short time, to ensure that the supply will probably remain on, and then will automatically change over and the emergency generator will shutdown. If the breaker hangs up it can be assisted up with the 2-by-4. When the mains supply has been restored to the pumping stations the previous checks should be repeated. When all vacuums are normal the beamline valves should be checked and reopened as necessary. Make sure that the vacuum is good on both sides before opening any valve.		# When mains voltage is restored the changeover breaker will wait a short time, to ensure that the supply will probably remain on, and then will automatically change over and the emergency generator will shutdown. If the breaker hangs up it can be assisted up with the 2-by-4. When the mains supply has been restored to the pumping stations the previous checks should be repeated. When all vacuums are normal the beamline valves should be checked and reopened as necessary. Make sure that the vacuum is good on both sides before opening any valve.

			= Contact =
			Lagy Baby mailto:lbaby@fsu.edu
			Ingo Wiedenhoever mailto:iwiedenhoever@fsu.edu

Rtang: /* Header 2 */

2022-04-12T13:51:22Z

Header 2

← Older revision		Revision as of 09:51, 12 April 2022
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	= Tandem Beamline SF6-Gas Security Ball Valves =		= Tandem Beamline SF6-Gas Security Ball Valves =

	~~== Header 2 ==~~

	Each beam line exiting the Tandem has a large diameter, pneumatically actuated Worcester Controls ball valve that will automatically close under normal operating conditions if a pressure rise on the order of in. of Hg is detected on the Tandem side of the valve. Because the Tandem is filled with SF6 at 85 psi and the accelerator tubes and beamline are under vacuum a failure of an O-ring seal, accelerator tube metal to glass bond or any major compromise of vacuum integrity within the machine could have catastrophic results. The intention of the valves are two fold. One is to contain the gas to prevent its loss, a $70,000 investment. The other is to prevent damage to the equipment on the beam line that is designed to withstand the implosive forces of vacuum and not the explosive 85 psi tank pressure.		Each beam line exiting the Tandem has a large diameter, pneumatically actuated Worcester Controls ball valve that will automatically close under normal operating conditions if a pressure rise on the order of in. of Hg is detected on the Tandem side of the valve. Because the Tandem is filled with SF6 at 85 psi and the accelerator tubes and beamline are under vacuum a failure of an O-ring seal, accelerator tube metal to glass bond or any major compromise of vacuum integrity within the machine could have catastrophic results. The intention of the valves are two fold. One is to contain the gas to prevent its loss, a $70,000 investment. The other is to prevent damage to the equipment on the beam line that is designed to withstand the implosive forces of vacuum and not the explosive 85 psi tank pressure.

Rtang at 13:51, 12 April 2022

2022-04-12T13:51:03Z

← Older revision		Revision as of 09:51, 12 April 2022
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	= Tandem Beamline SF6-Gas Security Ball Valves =		= Tandem Beamline SF6-Gas Security Ball Valves =

			== Header 2 ==

	Each beam line exiting the Tandem has a large diameter, pneumatically actuated Worcester Controls ball valve that will automatically close under normal operating conditions if a pressure rise on the order of in. of Hg is detected on the Tandem side of the valve. Because the Tandem is filled with SF6 at 85 psi and the accelerator tubes and beamline are under vacuum a failure of an O-ring seal, accelerator tube metal to glass bond or any major compromise of vacuum integrity within the machine could have catastrophic results. The intention of the valves are two fold. One is to contain the gas to prevent its loss, a $70,000 investment. The other is to prevent damage to the equipment on the beam line that is designed to withstand the implosive forces of vacuum and not the explosive 85 psi tank pressure.		Each beam line exiting the Tandem has a large diameter, pneumatically actuated Worcester Controls ball valve that will automatically close under normal operating conditions if a pressure rise on the order of in. of Hg is detected on the Tandem side of the valve. Because the Tandem is filled with SF6 at 85 psi and the accelerator tubes and beamline are under vacuum a failure of an O-ring seal, accelerator tube metal to glass bond or any major compromise of vacuum integrity within the machine could have catastrophic results. The intention of the valves are two fold. One is to contain the gas to prevent its loss, a $70,000 investment. The other is to prevent damage to the equipment on the beam line that is designed to withstand the implosive forces of vacuum and not the explosive 85 psi tank pressure.

Rtang: /* Tandem Beamline Vacuum Protection System */

2022-04-11T21:03:48Z

Tandem Beamline Vacuum Protection System

← Older revision		Revision as of 17:03, 11 April 2022
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	= Tandem Beamline Vacuum Protection System =		= Tandem Beamline Vacuum Protection System =

			[[File:BeamLineControlPanel.jpg\|500px\|thumb\|right]]

	The logic and status chassis for the Tandem Vault beam lines is above the switching magnet power supply, North of the H.E. vault shield door. There is a status panel also in the Control Room above the beamline devices panel (figure 4). The L.E., H.E., Sputter Source and Polarized Source vacuum indications are displayed in the Control Room also.		The logic and status chassis for the Tandem Vault beam lines is above the switching magnet power supply, North of the H.E. vault shield door. There is a status panel also in the Control Room above the beamline devices panel (figure 4). The L.E., H.E., Sputter Source and Polarized Source vacuum indications are displayed in the Control Room also.
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	The fast valve control box/penning gauge controllers themselves do have many common features. The valve control boxes can be used to open and close a valve at will in the unprotected mode (no vacuum consideration). In the protected mode, the valve can only be opened if the vacuum at the associated gauge head is better than the chosen set point, approximately 5 x 10−6. A controller that has sensed a vacuum excursion will have a flashing LED; to rearm the protection circuit and open the valve(s) that has tripped close, depress the push button reset switch on the front panel of that controller, the LED should stop flashing. Be cautious with the beamline valves: if all the controllers sense a good vacuum and all valve switches are in the open position, all four fast valves will open simultaneously. If this is not desired, place the valve control box switches to close, reset the tripped penning gauge controller, and then open the valves individually. If a penning gauge controller is out of service or it is desirable to prevent a controller from closing the beam line valves, it can be overridden at the logic panel by placing the switch indicated for that controller in the override position. The Ball valves should only be overridden after a staff member familiar with this system has been consulted.		The fast valve control box/penning gauge controllers themselves do have many common features. The valve control boxes can be used to open and close a valve at will in the unprotected mode (no vacuum consideration). In the protected mode, the valve can only be opened if the vacuum at the associated gauge head is better than the chosen set point, approximately 5 x 10−6. A controller that has sensed a vacuum excursion will have a flashing LED; to rearm the protection circuit and open the valve(s) that has tripped close, depress the push button reset switch on the front panel of that controller, the LED should stop flashing. Be cautious with the beamline valves: if all the controllers sense a good vacuum and all valve switches are in the open position, all four fast valves will open simultaneously. If this is not desired, place the valve control box switches to close, reset the tripped penning gauge controller, and then open the valves individually. If a penning gauge controller is out of service or it is desirable to prevent a controller from closing the beam line valves, it can be overridden at the logic panel by placing the switch indicated for that controller in the override position. The Ball valves should only be overridden after a staff member familiar with this system has been consulted.


	= Tandem Pelletron Interlock Panel =		= Tandem Pelletron Interlock Panel =

Rtang: /* Tandem Pressure Vessel Sulfur Hex Alarm Circuit Description */

2022-04-11T20:04:36Z

Tandem Pressure Vessel Sulfur Hex Alarm Circuit Description

← Older revision		Revision as of 16:04, 11 April 2022
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	# Open the HE fast valve and close the hand valve before the 90◦ magnet.		# Open the HE fast valve and close the hand valve before the 90◦ magnet.
	# Place the SNICS source exit, baffle and backing valves back in the protected mode and close the exit valve.		# Place the SNICS source exit, baffle and backing valves back in the protected mode and close the exit valve.

			= Venting the Tandem to Air =

			See [[SF6_Gas_Handling_System#Venting_the_Tandem_to_Air \| Venting the Tandem to Air]]


	= Tandem Pressure Vessel Sulfur Hex Alarm Circuit Description =		= Tandem Pressure Vessel Sulfur Hex Alarm Circuit Description =

Rtang at 19:50, 11 April 2022

2022-04-11T19:50:25Z

← Older revision		Revision as of 15:50, 11 April 2022
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	[[File:TandemVault.png\|500px\|thumb\|right]]		[[File:TandemVault.png\|500px\|thumb\|right]]

	~~{{font~~ color\|red~~\|This text is different}}~~		<span style="color:red">'''NEED PROOF READING</span>

	= Tandem Beamline SF6-Gas Security Ball Valves =		= Tandem Beamline SF6-Gas Security Ball Valves =

Rtang at 19:49, 11 April 2022

2022-04-11T19:49:50Z

← Older revision		Revision as of 15:49, 11 April 2022
Line 1:		Line 1:
	[[File:TandemVault.png\|500px\|thumb\|right]]		[[File:TandemVault.png\|500px\|thumb\|right]]

			{{font color\|red\|This text is different}}

	= Tandem Beamline SF6-Gas Security Ball Valves =		= Tandem Beamline SF6-Gas Security Ball Valves =