Ion Sources - Revision history

Iwiedenhoever: /* General */

2023-09-30T13:55:19Z

General

← Older revision		Revision as of 09:55, 30 September 2023
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	'''WARNING - The ion sources of the accelerator laboratory will be at extremely high voltages during operation, up to 120000 V.		'''WARNING - The ion sources of the accelerator laboratory will be at extremely high voltages during operation, up to 120000 V.

	Touching this equipment causes life-threatening electrical shocks'''		Touching this equipment while at high voltage potential causes life-threatening electrical shocks'''

	All parts of the equipment at high Voltage are enclosed by grounded metal cages for the protection of laboratory users.		All parts of the equipment at high Voltage are enclosed by grounded metal cages for the protection of laboratory users.

Iwiedenhoever at 19:17, 19 September 2023

2023-09-19T19:17:20Z

Iwiedenhoever at 19:10, 19 September 2023

2023-09-19T19:10:36Z

Iwiedenhoever at 19:04, 19 September 2023

2023-09-19T19:04:39Z

← Older revision		Revision as of 15:04, 19 September 2023
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	# Reaching this state is required '''before any access''' to the SNICS Source cage or the SNICS Power Supply cage, for service or repair.		# Reaching this state is required '''before any access''' to the SNICS Source cage or the SNICS Power Supply cage, for service or repair.
	# Bring the source to "Cold Idle" Mode, following the steps described above.		# Bring the source to "Cold Idle" Mode, following the steps described above.
	# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "~~Preaccelerator Power Supply~~".		# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Pre-accelerator high-Voltage supply".
	# '''Lock-out the power plug using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out". and filling an entry in the lock-out-tag-out book.		# '''Lock-out the power plug using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out". and filling an entry in the lock-out-tag-out book.
	# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.		# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.
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	# If no source-operation parameters have been recorded or cannot be found set the SNICS Cathode and Extractor supplies to 7.5 KV.		# If no source-operation parameters have been recorded or cannot be found set the SNICS Cathode and Extractor supplies to 7.5 KV.
	# Open the source exit valve		# Open the source exit valve
	# '''Remove the lock''' on the pre-accelerator ~~power~~ supply ~~module~~ power cord and plug it in, noting the "unlocked" state in the "log-out Tag-out" log located in the control room.		# '''Remove the lock''' on the pre-accelerator high-Voltage supply power cord and plug it in, noting the "unlocked" state in the "log-out Tag-out" log located in the control room.
	# Turn the pre-accelerator ~~power~~ supply on and push the green "High Voltage button".		# Turn the pre-accelerator high-Voltage supply on and push the green "High Voltage" button.
	# In the Control room: Turn on the pre-accelerator panel and raise the pre-accelerator to the desired Voltage, typically 120 kV.		# In the Control room: Turn on the pre-accelerator panel and raise the pre-accelerator to the desired Voltage, typically 120 kV.
	# Insert the L.E. faraday cup and depress the corresponding push button on the integrator panel. Select the most sensitive scale on the integrator initially and then adjust the scale if and when the beam current pegs the meter.		# Insert the L.E. faraday cup and depress the corresponding push button on the integrator panel. Select the most sensitive scale on the integrator initially and then adjust the scale if and when the beam current pegs the meter.

Iwiedenhoever at 19:02, 19 September 2023

2023-09-19T19:02:54Z

← Older revision		Revision as of 15:02, 19 September 2023
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	# In the Tandem Vault, open the source exit valve after verifying the source vacuum status.		# In the Tandem Vault, open the source exit valve after verifying the source vacuum status.
	# Verify that the source cage is closed and that the source is ready to start beam production		# Verify that the source cage is closed and that the source is ready to start beam production
	# ~~In the control room, turn~~ on the pre-accelerator ~~power~~ supply ~~and~~ increase the Voltage to the value required for the beam, which is typically 120 kV.		# Turn on the pre-accelerator high-Voltage supply
			# In the control room increase the Voltage to the value required for the beam, which is typically 120 kV.
	# Increase the Ionizer heater current in four-Ampere steps, separated by two-minute intervals while observing the beam current measured on the LE CUP		# Increase the Ionizer heater current in four-Ampere steps, separated by two-minute intervals while observing the beam current measured on the LE CUP
	# Note in the Tandem Log Book, located in the Control Room, the time the source was reactivated and make not of the beam currents.		# Note in the Tandem Log Book, located in the Control Room, the time the source was reactivated and make not of the beam currents.
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	# Reaching this state is required '''before any access''' to the SNICS Source cage or the SNICS Power Supply cage, for service or repair.		# Reaching this state is required '''before any access''' to the SNICS Source cage or the SNICS Power Supply cage, for service or repair.
	# Bring the source to "Cold Idle" Mode, following the steps described above.		# Bring the source to "Cold Idle" Mode, following the steps described above.
	# In the Tandem vault, switch off the pre-accelerator ~~power~~ supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Preaccelerator Power Supply".		# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Preaccelerator Power Supply".
	# '''Lock-out the power plug using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out". and filling an entry in the lock-out-tag-out book.		# '''Lock-out the power plug using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out". and filling an entry in the lock-out-tag-out book.
	# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.		# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.

Iwiedenhoever at 19:00, 19 September 2023

2023-09-19T19:00:41Z

Iwiedenhoever: /* Sputter Source */

2023-09-19T16:17:59Z

Sputter Source

← Older revision		Revision as of 12:17, 19 September 2023
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	= Sputter Source =		= Sputter Source =
	[[File:SNIC operation.png\|~~400px~~\|thumb\|right\|Sputter source Operation schematic]]		[[File:SNIC operation.png\|300px\|thumb\|right\|Sputter source Operation schematic]]
	[[File:SNICS ionSourceVolatge.png\|~~500px~~\|thumb\|Sputter source Volatge Schematic]]		[[File:SNICS ionSourceVolatge.png\|300px\|thumb\|Sputter source Volatge Schematic]]

	The Sputter Source is used for most beams at the FSU accelerator. It is also identified by its brand name "SNICS".		The Sputter Source is used for most beams at the FSU accelerator. It is also identified by its brand name "SNICS".

Iwiedenhoever: /* General */

2023-09-18T10:33:16Z

General

← Older revision		Revision as of 06:33, 18 September 2023
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	Only qualified personnel B. Schmidt, Dr. L.Baby or Dr. I. Wiedenhoever are allowed to secure the High-voltage ion source areas using the		Only qualified personnel B. Schmidt, Dr. L.Baby or Dr. I. Wiedenhoever are allowed to secure the High-voltage ion source areas using the
	~~Lock-out tag-out~~ procedures described below.		Lockout procedures described below.

	Always follow the operating procedures described below.		Always follow the operating procedures described below.

Iwiedenhoever: /* General */

2023-09-18T10:32:09Z

General

← Older revision		Revision as of 06:32, 18 September 2023
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	= General =		= General =
	'''WARNING - The ion sources of the accelerator laboratory will be at extremely high voltages during operation, up to 120000 V.		'''WARNING - The ion sources of the accelerator laboratory will be at extremely high voltages during operation, up to 120000 V.

	Touching this equipment causes life-threatening electrical shocks'''		Touching this equipment causes life-threatening electrical shocks'''

	All parts of the equipment at high Voltage are enclosed by grounded metal cages for the protection of laboratory users.		All parts of the equipment at high Voltage are enclosed by grounded metal cages for the protection of laboratory users.

Iwiedenhoever: /* General */

2023-09-18T10:31:53Z

General

← Older revision		Revision as of 06:31, 18 September 2023
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	= General =		= General =
	'''WARNING - The ion sources of the accelerator laboratory will be at extremely high voltages during operation, up to 120000 V~~, which~~		'''WARNING - The ion sources of the accelerator laboratory will be at extremely high voltages during operation, up to 120000 V.
	causes electrical ~~shock, threatening~~ the ~~life~~ of ~~anybody touching it or coming near it~~.~~'''~~		Touching this equipment causes life-threatening electrical shocks'''
			All parts of the equipment at high Voltage are enclosed by grounded metal cages for the protection of laboratory users.

	~~All parts of the equipment under high Voltage are enclosed by grounded metal cages for protection of the laboratory users.~~
	Three cages are present: 1) The cage surrounding the SNICS ion source body		Three cages are present: 1) The cage surrounding the SNICS ion source body
	2) the SNICS power supply cage 3) The cage surrounding the helium ion source and the new tritium ion source.		2) the SNICS power supply cage 3) The cage surrounding the helium ion source and the new tritium ion source.

← Older revision		Revision as of 15:17, 19 September 2023
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	[[File:RFSourceEinzelLensSchematic.png\|500px\|thumb\|right\|RF-Source Einzel Lens Schematic]]		[[File:RFSourceEinzelLensSchematic.png\|500px\|thumb\|right\|RF-Source Einzel Lens Schematic]]
	# Remove the lockout ~~devices~~ on the "Gap lens~~" and "Probe~~" power supplies and plug ~~them~~ into power outlets marked "Vacuum interlocked".		# '''Remove the lockout device''' on the "Gap lens" power supplies and plug it into power outlets marked "Vacuum interlocked".
	# Remove the lockout tag and return it to the Control room, closing the entry in the log book.		# Remove the lockout tag and return it to the Control room, closing the entry in the log book.
	# Set the "Gap Lens" HV supply to positive polarity, leaving it switched off for now.		# Set the "Gap Lens" HV supply to positive polarity, leaving it switched off for now.
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	# Switch the Gap-Lens power supply to negative polarity.		# Switch the Gap-Lens power supply to negative polarity.
	# Switch the cup current polarity to "negative".		# Switch the cup current polarity to "negative".
	# Close the cage doors and switch the Gap Lens supply "on" with the rod from the outside of the cage.		# Close the cage doors and switch the Gap Lens supply "on" with the control-rod from the outside of the cage.
	# Raise the Gap-lens voltage to -5 kV.		# Raise the Gap-lens voltage to -5 kV with the control-rod from outside the cage.
	# There should be a negative current reading on the cup. Optimize the beam using helium pressure, probe magnet and probe voltages.		# There should be a negative current reading on the cup. Optimize the beam using helium pressure, probe magnet and probe voltages with their respective control-rods.
	# Remove the lockout device on the pre-accelerator high-voltage supply power plug remove the corresponding tag and return it to the Control room, closing the entry in the log book.		# '''Remove the lockout device''' on the pre-accelerator high-voltage supply power plug remove the corresponding tag and return it to the Control room, closing the entry in the log book.
	# Turn the pre-accelerator HV supply on and raise the pre-accelerator voltage to 80kV.		# Turn the pre-accelerator HV supply on and raise the pre-accelerator voltage to 80kV.
	# Optimize the beam current in the accelerator LE cup using the 3-degree magnet current and the Ion source.		# Optimize the beam current in the accelerator LE cup using the 3-degree magnet current and the Ion source.

← Older revision		Revision as of 15:10, 19 September 2023
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	# In the control room, turn the source deflectors down and off.		# In the control room, turn the source deflectors down and off.
	# Turn the inflector magnet supply completely down.		# Turn the inflector magnet supply completely down.
	# At the SNICS power cage, turn the Lens, Extractor and Cathode H.V. supplies to zero with the control ~~rod~~ extending ~~from~~ the H.V. cage.		# At the SNICS power supply cage, turn the Lens, Extractor and Cathode H.V. supplies to zero with the control rods extending out of the H.V. cage.
	# Reduce the einzel lens voltage to zero by depressing the labeled rocker switch at the H.V. cage control panel.		# Reduce the einzel lens voltage to zero by depressing the labeled rocker switch at the H.V. cage control panel.
	# Note in the Tandem Log Book, located in the Control Room, the time the source was turned down to the "Cold Idle" mode.		# Note in the Tandem Log Book, located in the Control Room, the time the source was turned down to the "Cold Idle" mode.
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	# Bring the source to "Cold Idle" Mode, following the steps described above.		# Bring the source to "Cold Idle" Mode, following the steps described above.
	# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Pre-accelerator high-Voltage supply".		# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Pre-accelerator high-Voltage supply".
	# '''~~Lock-out~~ the power plug using a ~~lock-out~~ device available in the control room cabinet''', following the instructions for "Ion source ~~lock-out~~". and filling an entry in the ~~lock-out-tag-out~~ book.		# '''Lockout the power plug using a lockout device available in the control room cabinet''', following the instructions for "SNICS Ion source lockout". and filling an entry in the lockout log book.
	# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.		# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.
	# Turn the key switch at the panel to turn off the isolation transformer providing platform power to the H.V. cage. '''Remove the key from the control panel''' and place it in the lock box next to the panel. '''Lock the box''' and '''apply a tagout form'''. Make an entry into the ~~log~~-~~out-tag-out~~ book.		# Turn the key switch at the panel to turn off the isolation transformer providing platform power to the H.V. cage. '''Remove the key from the control panel''' and place it in the lock box next to the panel. '''Lock the box''' and '''apply a tagout form'''. Make an entry into the lockout-tagout book.
	# Open the cage door in front of the SNICS source.		# Open the cage door in front of the SNICS source.
	# A shorting rod is provided, which is attached by cable to the cage door. Hold the shorting rod by its insulated handle, with the tip of the rod touch the source on each side of the endmost ceramic insulator. Repeat touching the parts of the source multiple times, verify that no sparking to the tip occurs, establishing that all parts are at ground potential.		# A shorting rod is provided, which is attached by cable to the cage door. Hold the shorting rod by its insulated handle, with the tip of the rod touch the source on each side of the endmost ceramic insulator. Repeat touching the parts of the source multiple times, verify that no sparking to the tip occurs, establishing that all parts are at ground potential.
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	# If no source-operation parameters have been recorded or cannot be found set the SNICS Cathode and Extractor supplies to 7.5 KV.		# If no source-operation parameters have been recorded or cannot be found set the SNICS Cathode and Extractor supplies to 7.5 KV.
	# Open the source exit valve		# Open the source exit valve
	# '''Remove the lock''' on the pre-accelerator high-Voltage supply power cord and plug it in, noting the "unlocked" state in the "~~log-out Tag-out~~" log located in the control room.		# '''Remove the lock''' on the pre-accelerator high-Voltage supply power cord and plug it in, noting the "unlocked" state in the "lockout tagout" log book located in the control room.
	# Turn the pre-accelerator high-Voltage supply on and push the green "High Voltage" button.		# Turn the pre-accelerator high-Voltage supply on and push the green "High Voltage" button.
	# In the Control room: Turn on the pre-accelerator panel and raise the pre-accelerator to the desired Voltage, typically 120 kV.		# In the Control room: Turn on the pre-accelerator panel and raise the pre-accelerator to the desired Voltage, typically 120 kV.
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	This procedure will only be performed by B. Schmidt, Dr. L. Baby or Dr. I. Wiedenhoever.		This procedure will only be performed by B. Schmidt, Dr. L. Baby or Dr. I. Wiedenhoever.
	# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord.		# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord.
	# '''~~Lock-out~~ the power plug labeled "Pre-accelerator high-Voltage" using a ~~lock-out~~ device available in the control room cabinet''', following the instructions for "Ion source lock-out" and filling an entry in the ~~lock-out-tag-out book~~.		# '''Lockout the power plug labeled "Pre-accelerator high-Voltage" using a lockout device available in the control room cabinet''', following the instructions for "Ion source lock-out" and filling an entry in the lockout tagout logbook.
	# At the back-end on the outside of the source cage, turn the "Gap Lens" power supply to "zero" and the "Probe Power Supply" to zero.		# At the back-end on the outside of the source cage, turn the "Gap Lens" power supply to "zero" and the "Probe Power Supply" to zero.
	# Open the back-cage door. A grounding-hook connected to a grounded cable is provided.		# Open the back-cage door. A grounding-hook connected to a grounded cable is provided.
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	# Hang the hook on the corner of the upper platform.		# Hang the hook on the corner of the upper platform.
	# Switch off the "Gap Lens" and "Probe" Power Supplies.		# Switch off the "Gap Lens" and "Probe" Power Supplies.
	# Unplug the power "Gap Lens" and "Probe" Power Supplies and secure the with '''~~Lock-out~~ devices''', and attach a '''~~Tag~~''' to them.		# Unplug the power "Gap Lens" and "Probe" Power Supplies and secure the with '''lockout devices''', and attach a '''tag''' to them.
	# Write a corresponding entry in the ~~lock-out-tag-out~~ book.		# Write a corresponding entry in the lockout tagout log book.
	# If the source is to be brought into the "Cold Secured State", remove the RF power.		# If the source is to be brought into the "Cold Secured State", remove the RF power.

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	[[File:RFSourceEinzelLensSchematic.png\|500px\|thumb\|right\|RF-Source Einzel Lens Schematic]]		[[File:RFSourceEinzelLensSchematic.png\|500px\|thumb\|right\|RF-Source Einzel Lens Schematic]]
	# Remove the ~~Lock-out~~ devices on the "Gap lens" and "Probe" power supplies and plug them into power outlets marked "Vacuum interlocked".		# Remove the lockout devices on the "Gap lens" and "Probe" power supplies and plug them into power outlets marked "Vacuum interlocked".
	# Remove the ~~Lock-out~~ tag and return it to the Control room, closing the entry in the log book.		# Remove the lockout tag and return it to the Control room, closing the entry in the log book.
	# Set the "Gap Lens" HV supply to positive polarity, leaving it switched off for now.		# Set the "Gap Lens" HV supply to positive polarity, leaving it switched off for now.
	# Insert the cup and switch it to "positive polarity"		# Insert the cup and switch it to "positive polarity"
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	# Raise the Gap-lens voltage to -5 kV.		# Raise the Gap-lens voltage to -5 kV.
	# There should be a negative current reading on the cup. Optimize the beam using helium pressure, probe magnet and probe voltages.		# There should be a negative current reading on the cup. Optimize the beam using helium pressure, probe magnet and probe voltages.
	# Remove the ~~Lock-out~~ device on the pre-accelerator high-voltage supply power plug remove the corresponding tag and return it to the Control room, closing the entry in the log book.		# Remove the lockout device on the pre-accelerator high-voltage supply power plug remove the corresponding tag and return it to the Control room, closing the entry in the log book.
	# Turn the pre-accelerator HV supply on and raise the pre-accelerator voltage to 80kV.		# Turn the pre-accelerator HV supply on and raise the pre-accelerator voltage to 80kV.
	# Optimize the beam current in the accelerator LE cup using the 3-degree magnet current and the Ion source.		# Optimize the beam current in the accelerator LE cup using the 3-degree magnet current and the Ion source.

← Older revision		Revision as of 15:00, 19 September 2023
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	== Ion source operation states ==		== Ion source operation states ==
	The ion source and pre-accelerator can be in put into different states, depending on the phases of operation. The following procedures will make reference to transitions from on state to another. A) "Secured, Cold" state: All power sources are removed and locked-out. B) "Cold Idle" state: All power sources are turned off, but can be re-applied, the source and power supply cages stay closed. C) "Warm Idle" state: The power sources to the source remain on, but the "ionizer current" is turned down to preserve the source material fur further use. D) "Beam" state: producing ion beam to be injected into the tandem accelerator.		The ion source and pre-accelerator can be in put into different states, depending on the phases of operation. The following procedures will make reference to transitions from one state to another. A) "Secured, Cold" state: All power sources are removed and locked-out. B) "Cold Idle" state: All power sources are turned off, but can be re-applied, the source and power supply cages stay closed. C) "Warm Idle" state: The power sources to the source remain on, but the "ionizer current" is turned down to preserve the source material fur further use. D) "Beam" state: producing ion beam to be injected into the tandem accelerator.

	'''The source needs to be in the "Secured, Cold" state before any access to the ion source cage or the power supply cage is made.'''		'''The source needs to be in the "Secured, Cold" state before any access to the ion source cage or the power supply cage is made.'''
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	When a break or interruption in the experiment occurs and the negative ion source will not be required for four or more hours, it is desirable to turn down the source to prolong its operational life time.		When a break or interruption in the experiment occurs and the negative ion source will not be required for four or more hours, it is desirable to turn down the source to prolong its operational life time.
	# In the control room, turn the ~~preaccelerator~~ high voltage supply to zero Volts ~~and switch the power supply off~~.		# In the control room, turn the pre-accelerator high voltage supply to zero Volts.
	# In the Tandem vault, close the source exit valve.		# In the Tandem vault, close the source exit valve and switch the pre-accelerator high-Voltage supply off.
	# Reduce the Cesium Boiler Heater to 35 on the variac scale by turning the control rod located at the high voltage cage.		# Reduce the Cesium Boiler Heater to 35 on the variac scale by turning the control rod located at the high voltage cage.
	# Reduce the ionizer heater current by turning the control rod attached to the ionizer power supply located at the SNICS power supply cage. Reduce the current in four-Ampere steps separated by two minute intervals to fifteen Amperes.		# Reduce the ionizer heater current by turning the control rod attached to the ionizer power supply located at the SNICS power supply cage. Reduce the current in four-Ampere steps separated by two minute intervals to fifteen Amperes.
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	# In the Tandem Vault, open the source exit valve after verifying the source vacuum status.		# In the Tandem Vault, open the source exit valve after verifying the source vacuum status.
	# Verify that the source cage is closed and that the source is ready to start beam production		# Verify that the source cage is closed and that the source is ready to start beam production
	# In the control room, turn on the ~~preaccelerator~~ power supply and increase the Voltage to the value required for the beam, which is typically 120 kV.		# In the control room, turn on the pre-accelerator power supply and increase the Voltage to the value required for the beam, which is typically 120 kV.
	# Increase the Ionizer heater current in four-Ampere steps, separated by two-minute intervals while observing the beam current measured on the LE CUP		# Increase the Ionizer heater current in four-Ampere steps, separated by two-minute intervals while observing the beam current measured on the LE CUP
	# Note in the Tandem Log Book, located in the Control Room, the time the source was reactivated and make not of the beam currents.		# Note in the Tandem Log Book, located in the Control Room, the time the source was reactivated and make not of the beam currents.
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	# Note in the Tandem Log Book, located in the Control Room, the time the source was turned down to the "Cold Idle" mode.		# Note in the Tandem Log Book, located in the Control Room, the time the source was turned down to the "Cold Idle" mode.

	== Bringing the ~~Preaccelerator~~ and SNICS Source to "Secured, Cold" state. ==		== Bringing the Pre-accelerator and SNICS Source to "Secured, Cold" state. ==
	This procedure will only be performed by Brian Schmidt, Dr. L. Baby or Dr. I. Wiedenhoever		This procedure will only be performed by Brian Schmidt, Dr. L. Baby or Dr. I. Wiedenhoever

	# Reaching this state is required '''before any access''' to the SNICS Source cage or the SNICS Power Supply cage, for service or repair.		# Reaching this state is required '''before any access''' to the SNICS Source cage or the SNICS Power Supply cage, for service or repair.
	# Bring the source to "Cold Idle" Mode, following the steps described above.		# Bring the source to "Cold Idle" Mode, following the steps described above.
	# In the Tandem vault, switch off the ~~preaccelerator~~ power supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Preaccelerator Power Supply".		# In the Tandem vault, switch off the pre-accelerator power supply, which is located in a rack below the RF Buncher assembly and unplug the power cord labeled "Preaccelerator Power Supply".
	# '''Lock-out the power plug using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out". and filling an entry in the lock-out-tag-out book.		# '''Lock-out the power plug using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out". and filling an entry in the lock-out-tag-out book.
	# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.		# In the SNICS source power cage, verify that the Extraction, Cathode and Lens High-Voltage supplies read "zero" Volts.
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	# A shorting rod is provided, which is attached by cable to the cage door. Hold the shorting rod by its insulated handle, with the tip of the rod touch the source on each side of the endmost ceramic insulator. Repeat touching the parts of the source multiple times, verify that no sparking to the tip occurs, establishing that all parts are at ground potential.		# A shorting rod is provided, which is attached by cable to the cage door. Hold the shorting rod by its insulated handle, with the tip of the rod touch the source on each side of the endmost ceramic insulator. Repeat touching the parts of the source multiple times, verify that no sparking to the tip occurs, establishing that all parts are at ground potential.
	# Hang the shorting rod on the source body, between the air lock VAT valve and the HPS vacuum fitting clamp.		# Hang the shorting rod on the source body, between the air lock VAT valve and the HPS vacuum fitting clamp.
	# The source and ~~preaccelerator~~ are now in "Secured Cold" state, Access to the external source body and the power supply enclosure is now possible.		# The source and pre-accelerator are now in "Secured Cold" state, Access to the external source body and the power supply enclosure is now possible.

	== Bringing the source up from "Cold Secured" state to "Beam" state ==		== Bringing the source up from "Cold Secured" state to "Beam" state ==
Line 154:		Line 154:
	== Bring the source from "Beam" to "Cold Secured State" or "Warm Secured State" ==		== Bring the source from "Beam" to "Cold Secured State" or "Warm Secured State" ==
	This procedure will only be performed by B. Schmidt, Dr. L. Baby or Dr. I. Wiedenhoever.		This procedure will only be performed by B. Schmidt, Dr. L. Baby or Dr. I. Wiedenhoever.
	# In the Tandem vault, switch off the ~~preaccelerator power~~ supply, which is located in a rack below the RF Buncher assembly and unplug the power cord.		# In the Tandem vault, switch off the pre-accelerator high-Voltage supply, which is located in a rack below the RF Buncher assembly and unplug the power cord.
	# '''Lock-out the power plug labeled "~~Preaccelerator Power~~" using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out" and filling an entry in the lock-out-tag-out book.		# '''Lock-out the power plug labeled "Pre-accelerator high-Voltage" using a lock-out device available in the control room cabinet''', following the instructions for "Ion source lock-out" and filling an entry in the lock-out-tag-out book.
	# At the back-end on the outside of the source cage, turn the "Gap Lens" power supply to "zero" and the "Probe Power Supply" to zero.		# At the back-end on the outside of the source cage, turn the "Gap Lens" power supply to "zero" and the "Probe Power Supply" to zero.
	# Open the back-cage door. A grounding-hook connected to a grounded cable is provided.		# Open the back-cage door. A grounding-hook connected to a grounded cable is provided.
Line 189:		Line 189:
	# Raise the Gap-lens voltage to -5 kV.		# Raise the Gap-lens voltage to -5 kV.
	# There should be a negative current reading on the cup. Optimize the beam using helium pressure, probe magnet and probe voltages.		# There should be a negative current reading on the cup. Optimize the beam using helium pressure, probe magnet and probe voltages.
	# Remove the Lock-out device on the ~~preaccelerator~~ high-voltage supply power plug remove the corresponding tag and return it to the Control room, closing the entry in the log book.		# Remove the Lock-out device on the pre-accelerator high-voltage supply power plug remove the corresponding tag and return it to the Control room, closing the entry in the log book.
	# Turn the ~~preaccelerator~~ HV supply on and raise the ~~preaccelerator~~ voltage to 80kV.		# Turn the pre-accelerator HV supply on and raise the pre-accelerator voltage to 80kV.
	# Optimize the beam current in the accelerator LE cup using the 3-degree magnet current and the Ion source.		# Optimize the beam current in the accelerator LE cup using the 3-degree magnet current and the Ion source.