MPS Minutes 20210527 - Revision history

Lennarz: /* Second stage trip */

2021-05-27T23:11:35Z

Second stage trip

← Older revision		Revision as of 23:11, 27 May 2021
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	*HH added two more status bits to recognize status of connection (connection timing system to BLM and connection FSD to timing system) unplugged, i.e., if pulse is longer than 1 us.		*HH added two more status bits to recognize status of connection (connection timing system to BLM and connection FSD to timing system) unplugged, i.e., if pulse is longer than 1 us.
	*As soon as trip is cleared to go back to stage 1, these bits are also cleared.		*As soon as trip is cleared to go back to stage 1, these bits are also cleared.
	*		*HH to update documentation and perform tests with test crate next week.

	==HV BLM issue (iseg) ==		==HV BLM issue (iseg) ==

Lennarz: /* Second stage trip */

2021-05-27T23:10:54Z

Second stage trip

← Older revision		Revision as of 23:10, 27 May 2021
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	*HH generating an additional 5us to existing 5us => 10us		*HH generating an additional 5us to existing 5us => 10us
	*There's requirement for pulses to be no wider than 1us, but we should be good as timing system generates 900ns pulse. HH to confirm with MR.		*There's requirement for pulses to be no wider than 1us, but we should be good as timing system generates 900ns pulse. HH to confirm with MR.
	*HH added two more status bits.		*HH added two more status bits to recognize status of connection (connection timing system to BLM and connection FSD to timing system) unplugged, i.e., if pulse is longer than 1 us.
			*As soon as trip is cleared to go back to stage 1, these bits are also cleared.
			*

	==HV BLM issue (iseg) ==		==HV BLM issue (iseg) ==

Lennarz: /* Second stage trip */

2021-05-27T23:05:06Z

Second stage trip

← Older revision		Revision as of 23:05, 27 May 2021
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	*HH fixed issue with pulses - > Test with Ricky's crate on Monday.		*HH fixed issue with pulses - > Test with Ricky's crate on Monday.
	*For trip we no longer rely on timing system, but module will handle it itself and trip on the falling edge.		*For trip we no longer rely on timing system, but module will handle it itself and trip on the falling edge.
	*		*HH generating an additional 5us to existing 5us => 10us
			*There's requirement for pulses to be no wider than 1us, but we should be good as timing system generates 900ns pulse. HH to confirm with MR.
			*HH added two more status bits.

	==HV BLM issue (iseg) ==		==HV BLM issue (iseg) ==

Lennarz: /* Second stage trip */

2021-05-27T23:02:14Z

Second stage trip

← Older revision		Revision as of 23:02, 27 May 2021
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	==Second stage trip ==		==Second stage trip ==
			*HH had issues with VME bridge module
			*Timings have to be very precise, otherwise one runs into issues with module. But CAEN documentation is really poor.
			*HH fixed issue with pulses - > Test with Ricky's crate on Monday.
			*For trip we no longer rely on timing system, but module will handle it itself and trip on the falling edge.
			*

	==HV BLM issue (iseg) ==		==HV BLM issue (iseg) ==

Lennarz at 22:53, 27 May 2021

2021-05-27T22:53:37Z

← Older revision		Revision as of 22:53, 27 May 2021
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	*MA, AL to do Post-Mortem tests.		*MA, AL to do Post-Mortem tests.
	*AD approved Martin's document in docushare.		*AD approved Martin's document in docushare.

			==Action Items ==
			*AD to set address via IOC shell tomorrow (Friday). Work permit required.
			*MA, AL to do Post-Mortem tests.
			*AL to write up doc for LED calibration.
			*MA to test PMT for fibre
			*MA, AL to install low energy MPS detectors and spare.
			*HH to continue on second stage trip and update documents.
			*MA to check with Doug on cable floor protective covers

Lennarz: /* HV BLM issue (iseg) */

2021-05-27T22:51:24Z

HV BLM issue (iseg)

← Older revision		Revision as of 22:51, 27 May 2021
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	==HV BLM issue (iseg) ==		==HV BLM issue (iseg) ==
			*HH had a look at the spares storage rack and did not find a single slot HV PS, but only a couple 2 slot units.
			*There is a metal cover over the entire board. It looks like iseg did not want a users to open it up just to change the module address.
			*There seems to be no manual way to set the address.
			*AD to set address via IOC shell tomorrow (Friday). Work permit required.
			*Exchange first and second module to see if trip issue moves for next Post Mortem tests.

	== E-hall work ==		== E-hall work ==

Lennarz: /* E-hall work */

2021-05-27T22:48:00Z

E-hall work

← Older revision		Revision as of 22:48, 27 May 2021
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	== E-hall work ==		== E-hall work ==
			*AL, MA connected all detectors in e-hall on Tuesday and tested all PMTs with LEDs except EHAT:PMT4, which had an SHV connector on LED cable in the hall instead of BNC. But label was correct. HH to replace connector after meeting.
			*Also tested all LICs by ramping up voltage and checking response.
			*AL changed all high energy labels on the roof and reconnected things.
			*MA reconnected all Ar lines. Now have sufficient flow rate. But turned off Ar for now until we expect beam.
			*Helmholz coil was installed this morning. AL, MA to install low energy detectors today. And install spare detector for diagnostics as requested by Brandon.
			*After low energy detectors are installed, work in e-hall should be finished for the moment.

	== Fibre ==		== Fibre ==

Lennarz: /* Fibre */

2021-05-27T22:44:13Z

Fibre

← Older revision		Revision as of 22:44, 27 May 2021
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	== Fibre ==		== Fibre ==
			*No update
			*MA to test PMT
			*Might use empty channel on module 1

	== AOB ==		== AOB ==

Lennarz: /* AOB */

2021-05-27T22:43:25Z

AOB

← Older revision		Revision as of 22:43, 27 May 2021
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	== AOB ==		== AOB ==
			*HH replaced broken HV connector on roof for ELBT:PMT1C.
			*AD to correct LED label in epics on driver from EHBT:PMT4 to EHAT:PMT4.
			*MA: Wiki now accessible without vpn connection. Should be ok, as documents are only linked and not uploaded. To access those one still has to use vpn.
			*AL still needs to write up doc for LED calibration. For LICs, we'll probably just use regular spills (in between targets for instance) to test LIC response in the future.
			*MA, AL to do Post-Mortem tests.
			*AD approved Martin's document in docushare.

Lennarz: Created page with "Present: MA, RC, AD, HH, KL, RN, AL (recorder) ==Second stage trip == ==HV BLM issue (iseg) == == E-hall work == == Fibre == == AOB =="

2021-05-27T22:39:36Z

Created page with "Present: MA, RC, AD, HH, KL, RN, AL (recorder) ==Second stage trip == ==HV BLM issue (iseg) == == E-hall work == == Fibre == == AOB =="

New page

Present: MA, RC, AD, HH, KL, RN, AL (recorder)

==Second stage trip ==

==HV BLM issue (iseg) ==

== E-hall work ==

== Fibre ==

== AOB ==