MPS Minutes 20220210 - Revision history

Lennarz at 00:16, 15 February 2022

2022-02-15T00:16:27Z

← Older revision		Revision as of 00:16, 15 February 2022
Line 18:		Line 18:
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	*Regarding Ar flow interlocks to prevent running beam when Ar flow is not given, we need to request work request.		*Regarding Ar flow interlocks to prevent running beam when Ar flow is not given, we need to request work request.
			*AL talked to Jessica Blando regarding Ar supply. She said she would take over for Rick and continue to be in charge of purchasing. Have quick in person meeting tomorrow as well to check out the valve. JB also doesn't have key for shed?
	*Need to email Keiko to add Jessica to alarm list		*Need to email Keiko to add Jessica to alarm list
	*Discussion on whether we could use solenoid and recirculate Ar instead of the gas going to exhaust. Level of leak tightness may not be good enough to guarantee adequate purity of gas. Once could test this via detector response over time.		*Discussion on whether we could use solenoid and recirculate Ar instead of the gas going to exhaust. Level of leak tightness may not be good enough to guarantee adequate purity of gas. Once could test this via detector response over time.
Line 38:		Line 39:

	==AOB==		==AOB==
	*AL talked to Jessica Blando regarding Ar supply. She said she would take over for Rick and continue to be in charge of purchasing. Have quick in person meeting tomorrow as well to check out the valve. JB also doesn't have key for shed?
	*MA talked to Phil regarding LIC fabrication. Likely early March.		*MA talked to Phil regarding LIC fabrication. Likely early March.

Lennarz at 00:15, 15 February 2022

2022-02-15T00:15:33Z

← Older revision		Revision as of 00:15, 15 February 2022
Line 1:		Line 1:
	Meeting commenced: 10:00am		Meeting commenced: 10:00am
	Meeting adjourned: am		Meeting adjourned: 10:30am
	Present: HH, MA, KL, RN, MR, RC, AD, AL		Present: HH, MA, KL, RN, MR, RC, AD, AL

Line 6:		Line 6:
	*First beam on Tuesday afternoon		*First beam on Tuesday afternoon
	*Priority is on FLASH		*Priority is on FLASH
			**Plan for first FLASH tests with dead mouse or tissue in 2 weeks?
			**HH: Still one cable missing, that needed connector
			***Discussion on power limits. AL followed up with Luca. Confirmed 1kW maximum power in pulsed mode, which means 0.1mA for a maximum of 1s at 10 MeV. And for continuous beam it would be 200W
	*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans		*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans
			**Focus will be on dump line.
	**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.		**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.
	*They had beam again yesterday, egun ramp up looked like they went to 300kV without major issues. Looked fast on strip tool. Maybe 10 - 15min?		*They had beam again yesterday, egun ramp up looked like they went to 300kV without major issues. Looked fast on strip tool. Maybe 10 - 15min?
	*It looks like EINJ was at 980 MV/m. Yesterday EMBT:PMT3 was at 147 pC, EMBD:LIC2 saw 33 pC.		*It looks like EINJ was at 980 MV/m. Yesterday EMBT:PMT3 was at 147 pC, EMBD:LIC2 saw 33 pC.

			==Ar supply==
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	**Regarding Ar flow~~. Do we already have~~ interlocks ~~in place~~ to prevent running beam, when Ar flow is not given~~? As technically~~, ~~you don't have proper BLM response~~ and may not ~~catch beam loss~~. ~~We have specified when beam shall trip, but is~~ this ~~implemented? And does this also apply for inhibit?~~		*Regarding Ar flow interlocks to prevent running beam when Ar flow is not given, we need to request work request.
	*Martin had a few more minutes with Thomas, timeline for first tests?		*Need to email Keiko to add Jessica to alarm list
			*Discussion on whether we could use solenoid and recirculate Ar instead of the gas going to exhaust. Level of leak tightness may not be good enough to guarantee adequate purity of gas. Once could test this via detector response over time.


	==BLM calibration==		==BLM calibration==
	*AL ready to send out document, just need to get values for LICs. There was no Ar flow until ~~Tuesday~~		*AL ready to send out document, just need to get values for LICs. There was no Ar flow until Wednesday
	*Will do another manual calibration today, add values and send out		*Will do another manual calibration today, add values and send out
	*Question on sequence for PMT/LIC. If first calibration point is not checking out, should system continue to second point anyways? Or state calibration error immediately and abort calibration?		*Question on sequence for PMT/LIC. If first calibration point is not checking out, should system continue to second point anyways? Or state calibration error immediately and abort calibration? Probably, just abort calibration at point 1.
	*Should there be an automated second attempt of the system to calibrate a channel, or should this only be initiated by expert?		*Should there be an automated second attempt of the system to calibrate a channel, or should this only be initiated by expert?

Line 23:		Line 31:
	*AL preparing documents for requirements and specs		*AL preparing documents for requirements and specs
	*No update since last time		*No update since last time

	~~==FLASH/Darklight effect on MPS==~~

	*Discussion on power limits. Followed up with Luca. Confirmed 1kW maximum power in pulsed mode, which means 0.1mA for a maximum of 1s at 10 MeV. And for continuous beam it would be 200W.

	==Fibre==		==Fibre==
	*2 PMTs ~~may be available~~ from Conny??		*Turns out the potentially available PMTs from Conny, that one is broken and the other likely in use
	*~~Thomas L. had factory/of~~-~~the-shelve fibre coupler. We may need~~ 3D ~~printed~~ coupler ~~and just buy connector. HH thinks this is possbile. Have 3D printer with black plastic available for use~~.		*Martin is looking into 3-4 different types, once decided, will try to 3D print coupler.
	*~~MA will try to~~ get ~~drawings from manufacturer -> Was this done?~~		*Will get 2 PMTs.

	==AOB==		==AOB==
	*AL talked to Jessica Blando regarding Ar supply. She said she would take over for Rick and continue to be in charge of purchasing. Have quick in person meeting tomorrow as well to check out the valve. JB also doesn't have key for shed?		*AL talked to Jessica Blando regarding Ar supply. She said she would take over for Rick and continue to be in charge of purchasing. Have quick in person meeting tomorrow as well to check out the valve. JB also doesn't have key for shed?
			*MA talked to Phil regarding LIC fabrication. Likely early March.

	==Action Items==		==Action Items==
	*AL to follow up with Luca E. on power levels for FLASH dump.
	*AL to send out document for view screen/BLM interlock requirements/specs		*AL to send out document for view screen/BLM interlock requirements/specs
	*AL to implement comments for BLM calibration requirements/specs document and send out to reviewers		*AL to implement comments for BLM calibration requirements/specs document and send out to reviewers
	*MA~~: What SiPMs and or PMTs are we looking~~ to buy?		*Submit work request for Ar flow interlock
			*MA to buy PMTs
	*Fibre coupler: MA will try to get drawings from manufacturer for 3D printing option		*Fibre coupler: MA will try to get drawings from manufacturer for 3D printing option
	*MA to check with Phil L. if all parts are available for BL4N LICs.
	*2nd stage trip implementation:
	**Final status of implementation?
	**What is left to do/needed?
	*AL to take recommissioning scans in medium and high energy section, once beam is back.		*AL to take recommissioning scans in medium and high energy section, once beam is back.

Lennarz at 17:42, 10 February 2022

2022-02-10T17:42:48Z

← Older revision		Revision as of 17:42, 10 February 2022
Line 26:		Line 26:
	==FLASH/Darklight effect on MPS==		==FLASH/Darklight effect on MPS==

	*Discussion on power limits. Followed up with Luca. ~~Waiting on response~~.		*Discussion on power limits. Followed up with Luca. Confirmed 1kW maximum power in pulsed mode, which means 0.1mA for a maximum of 1s at 10 MeV. And for continuous beam it would be 200W.

	==Fibre==		==Fibre==

Lennarz at 17:38, 10 February 2022

2022-02-10T17:38:29Z

← Older revision		Revision as of 17:38, 10 February 2022
Line 8:		Line 8:
	*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans		*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans
	**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.		**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.
	*~~Background levels right now are low~~. ~~Good~~. It looks like EINJ is at 980 MV/m ~~and EACA~~ at ~~600 MV/m~~.		*They had beam again yesterday, egun ramp up looked like they went to 300kV without major issues. Looked fast on strip tool. Maybe 10 - 15min?
			*It looks like EINJ was at 980 MV/m. Yesterday EMBT:PMT3 was at 147 pC, EMBD:LIC2 saw 33 pC.
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss. We have specified when beam shall trip, but is this implemented? And does this also apply for inhibit?		**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss. We have specified when beam shall trip, but is this implemented? And does this also apply for inhibit?

Lennarz at 17:23, 10 February 2022

2022-02-10T17:23:03Z

← Older revision		Revision as of 17:23, 10 February 2022
Line 10:		Line 10:
	*Background levels right now are low. Good. It looks like EINJ is at 980 MV/m and EACA at 600 MV/m.		*Background levels right now are low. Good. It looks like EINJ is at 980 MV/m and EACA at 600 MV/m.
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.		**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss. We have specified when beam shall trip, but is this implemented? And does this also apply for inhibit?
	*Martin had a few more minutes with Thomas, timeline for first tests?		*Martin had a few more minutes with Thomas, timeline for first tests?

Lennarz at 17:18, 10 February 2022

2022-02-10T17:18:55Z

← Older revision		Revision as of 17:18, 10 February 2022
Line 8:		Line 8:
	*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans		*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans
	**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.		**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.
	*Background levels right now are low. Good.		*Background levels right now are low. Good. It looks like EINJ is at 980 MV/m and EACA at 600 MV/m.
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.		**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.

Lennarz at 17:14, 10 February 2022

2022-02-10T17:14:24Z

← Older revision		Revision as of 17:14, 10 February 2022
Line 8:		Line 8:
	*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans		*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans
	**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.		**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.
			*Background levels right now are low. Good.
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.		**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.

Lennarz at 17:06, 10 February 2022

2022-02-10T17:06:11Z

← Older revision		Revision as of 17:06, 10 February 2022
Line 7:		Line 7:
	*Priority is on FLASH		*Priority is on FLASH
	*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans		*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans
			**Once that's done, final thresholds can be set and updated in document "E-Linac BLM controls Configuration Specifications". And Darren can mount high energy LIC covers permanently.
	*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.		*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
	**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.		**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.
			*Martin had a few more minutes with Thomas, timeline for first tests?

	==BLM calibration==		==BLM calibration==
	*AL ready to send out document, just need to get values for LICs. There was no Ar flow until Tuesday		*AL ready to send out document, just need to get values for LICs. There was no Ar flow until Tuesday
			*Will do another manual calibration today, add values and send out
	*Question on sequence for PMT/LIC. If first calibration point is not checking out, should system continue to second point anyways? Or state calibration error immediately and abort calibration?		*Question on sequence for PMT/LIC. If first calibration point is not checking out, should system continue to second point anyways? Or state calibration error immediately and abort calibration?
	*Should there be an automated second attempt of the system to calibrate a channel, or should this only be initiated by expert?		*Should there be an automated second attempt of the system to calibrate a channel, or should this only be initiated by expert?

Lennarz: Created page with "Meeting commenced: 10:00am Meeting adjourned: am Present: HH, MA, KL, RN, MR, RC, AD, AL ==E-Linac status== First beam on Tuesday afternoon Priority is on FLASH *Thomas sai..."

2022-02-10T16:58:30Z

Created page with "Meeting commenced: 10:00am Meeting adjourned: am Present: HH, MA, KL, RN, MR, RC, AD, AL ==E-Linac status== *First beam on Tuesday afternoon *Priority is on FLASH *Thomas sai..."

New page

Meeting commenced: 10:00am
Meeting adjourned: am
Present: HH, MA, KL, RN, MR, RC, AD, AL

==E-Linac status==
*First beam on Tuesday afternoon
*Priority is on FLASH
*Thomas said maybe first option for MPS is today or on Monday to do re-commissioning scans
*AL turned on Ar flow on Tuesday -> Just one bottle. Other has different valve, which seemed stuck.
**Regarding Ar flow. Do we already have interlocks in place to prevent running beam, when Ar flow is not given? As technically, you don't have proper BLM response and may not catch beam loss.

==BLM calibration==
*AL ready to send out document, just need to get values for LICs. There was no Ar flow until Tuesday
*Question on sequence for PMT/LIC. If first calibration point is not checking out, should system continue to second point anyways? Or state calibration error immediately and abort calibration?
*Should there be an automated second attempt of the system to calibrate a channel, or should this only be initiated by expert?

==View screen / BLM interlocks for tuning==
*AL preparing documents for requirements and specs
*No update since last time

==FLASH/Darklight effect on MPS==

*Discussion on power limits. Followed up with Luca. Waiting on response.

==Fibre==
*2 PMTs may be available from Conny??
*Thomas L. had factory/of-the-shelve fibre coupler. We may need 3D printed coupler and just buy connector. HH thinks this is possbile. Have 3D printer with black plastic available for use.
*MA will try to get drawings from manufacturer -> Was this done?

==AOB==
*AL talked to Jessica Blando regarding Ar supply. She said she would take over for Rick and continue to be in charge of purchasing. Have quick in person meeting tomorrow as well to check out the valve. JB also doesn't have key for shed?

==Action Items==
*AL to follow up with Luca E. on power levels for FLASH dump.
*AL to send out document for view screen/BLM interlock requirements/specs
*AL to implement comments for BLM calibration requirements/specs document and send out to reviewers
*MA: What SiPMs and or PMTs are we looking to buy?
*Fibre coupler: MA will try to get drawings from manufacturer for 3D printing option
*MA to check with Phil L. if all parts are available for BL4N LICs.
*2nd stage trip implementation:
**Final status of implementation?
**What is left to do/needed?
*AL to take recommissioning scans in medium and high energy section, once beam is back.