MPS Minutes 20220120: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 3: | Line 3: | ||
*Needs to be done at reasonable background levels, i.e., not with high dark current conditions from cavities. | *Needs to be done at reasonable background levels, i.e., not with high dark current conditions from cavities. | ||
*Should this go hand in hand with scan to verify coverage after a long shut down period? | *Should this go hand in hand with scan to verify coverage after a long shut down period? | ||
*Add flow chart | *Add flow chart for sequence of events | ||
*AL to implement comments for BLM calibration requirements/specs document and send out to reviewers | |||
*Add requirements: For instance, beam needs to be off for calibration, cavities off => procedure during downtime | |||
*Add Rod, Alex and Brandon as reviewer, Mike for final approval | |||
*Make sure to define times precisely | |||
*Use 2 calibration points for PMTs to verify linearity | |||
==View screen / BLM interlocks for tuning== | ==View screen / BLM interlocks for tuning== | ||
*AL preparing documents for requirements and specs | *AL preparing documents for requirements and specs | ||
* | *Add requirements and table | ||
*6-7 VS with 1 or 2 BLMs to be prevented from tripping | |||
*Be clear on definition of "disabled". Trip function should be disabled, but readback must be available. | |||
==FLASH/Darklight effect on MPS== | ==FLASH/Darklight effect on MPS== | ||
| Line 16: | Line 23: | ||
*1kW for FLASH dump in pulse mode. 1W in continuous mode. There might be extra room for BLM thresholds ==> AL to follow up with Luca E. | *1kW for FLASH dump in pulse mode. 1W in continuous mode. There might be extra room for BLM thresholds ==> AL to follow up with Luca E. | ||
*original dump design was for 500W ? | *original dump design was for 500W ? | ||
==Fibre== | ==Fibre== | ||
* | *MA in contact with Hamamatsu on lead times for PMTs. Seem to be around 2-3 months. | ||
* | *2 PMTs may be available from Conny | ||
*Thomas Lindner took his PMT back end of 2021 | |||
*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 | |||
==AOB== | ==AOB== | ||
*Making LICs for BL4N once cases are down a bit | |||
*HH offers to be around when Phil L. shows AL and MA how to manufacturer LICs. Possible option to make the LICs in electronics shop. | |||
*MA to check with Phil L. if all parts are available. | |||
*Do we have enough for full length of tunnel? | |||
*Might make longer LICs depending on required position resolution | |||
*Tricky part might be the end caps to seal Argon connections. | |||
==Action Items== | |||
*AL to follow up with Luca E. on power levels for FLASH dump. | |||
*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 | |||
*2nd stage trip implementation: | |||
**Final status of implementation? | |||
**What is left to do/needed? | |||
*Do all channels already have an HV OK? Do some still need to be added to watchdog? | *Do all channels already have an HV OK? Do some still need to be added to watchdog? | ||
Revision as of 00:34, 21 January 2022
BLM calibration
- AL preparing documents for requirements and specs
- Needs to be done at reasonable background levels, i.e., not with high dark current conditions from cavities.
- Should this go hand in hand with scan to verify coverage after a long shut down period?
- Add flow chart for sequence of events
- AL to implement comments for BLM calibration requirements/specs document and send out to reviewers
- Add requirements: For instance, beam needs to be off for calibration, cavities off => procedure during downtime
- Add Rod, Alex and Brandon as reviewer, Mike for final approval
- Make sure to define times precisely
- Use 2 calibration points for PMTs to verify linearity
View screen / BLM interlocks for tuning
- AL preparing documents for requirements and specs
- Add requirements and table
- 6-7 VS with 1 or 2 BLMs to be prevented from tripping
- Be clear on definition of "disabled". Trip function should be disabled, but readback must be available.
FLASH/Darklight effect on MPS
- Darklight and FLASH installation complete
- Email from Luca Egoriti last week: hoping to put beam on the FLASH station (the old EMBD dump) as soon as the e-linac is back in shape, and since the shielding envelope has changed we foresee higher dose rates in the ehall coming from the target/dump. Hence, we wanted to let you know since there might be some MPS work to be done to accommodate the modifications
- Recommissioning required for medium and high energy section.
- 1kW for FLASH dump in pulse mode. 1W in continuous mode. There might be extra room for BLM thresholds ==> AL to follow up with Luca E.
- original dump design was for 500W ?
Fibre
- MA in contact with Hamamatsu on lead times for PMTs. Seem to be around 2-3 months.
- 2 PMTs may be available from Conny
- Thomas Lindner took his PMT back end of 2021
- 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
AOB
- Making LICs for BL4N once cases are down a bit
- HH offers to be around when Phil L. shows AL and MA how to manufacturer LICs. Possible option to make the LICs in electronics shop.
- MA to check with Phil L. if all parts are available.
- Do we have enough for full length of tunnel?
- Might make longer LICs depending on required position resolution
- Tricky part might be the end caps to seal Argon connections.
Action Items
- AL to follow up with Luca E. on power levels for FLASH dump.
- 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
- 2nd stage trip implementation:
- Final status of implementation?
- What is left to do/needed?
- Do all channels already have an HV OK? Do some still need to be added to watchdog?