Difference between revisions of "Upgrade/VeloModules"
| Line 24: | Line 24: | ||
* LV (incl. PC for controls?) | * LV (incl. PC for controls?) | ||
* DAQ | * DAQ | ||
| − | * | + | * fibers to connect to DAQ |
* database to summarize results | * database to summarize results | ||
| Line 32: | Line 32: | ||
* PC with PVSS to control LV and HV | * PC with PVSS to control LV and HV | ||
* DAQ | * DAQ | ||
| − | * | + | * fibers to connect to DAQ |
* PC to run data analysis (needs to happen in real time as data volumes are very large) | * PC to run data analysis (needs to happen in real time as data volumes are very large) | ||
* database to summarize results | * database to summarize results | ||
| Line 40: | Line 40: | ||
* if not in the cleanroom, a 'tent' to protect setup | * if not in the cleanroom, a 'tent' to protect setup | ||
| − | + | We will have only one DAQ system, the so-called 'mini-DAQ'. A system consists of a PCI express card in | |
| − | + | an ASUS ESC 4000 G3 server PC. (See https://www.asus.com/us/Commercial-Servers-Workstations/ESC4000_G3/). As we have only one system, we either need to do both tests in the same place, or pull fibers. | |
| − | |||
| − | + | A lot of what we do depends on where we do test 2. If we do it in the clean room, then we need a blow system for the CO2. If we do it in the vacuum lab, then we need to pull a lot of optical fibers. To take this decision, we need to understand: | |
| + | * when is the blow system available? how often do we need to change bottles? is bottled CO2 dry and clean enough? is a blow system with cryogenic CO2 an option? | ||
| + | * is the standard CO2 cooler reliable enough? | ||
| + | |||
| + | Things that we can prepare before the decision on the location of test 2: | ||
| + | * finish the vacuum tank (Q4 2016) | ||
| + | * collect LV and HV units, 19 inch rack (Q4 2016) | ||
| + | * configure the PC for LV and HV controls (Q1 2017? does this make sense if we do not have a module yet?) | ||
| + | * prepare DAQ system (Q1 2017) | ||
Revision as of 17:34, 26 September 2016
Under construction
Communication
- This wiki: https://wiki.nikhef.nl/lhcb/Upgrade/VeloModules
- ELOG: https://webapps.nikhef.nl/elog/VELO_Upgrade_Cooling_VELOpix/
- Progress reports in MT meetings: http://www.nikhef.nl/pub/experiments/bfys/lhcb/vertex/documents/minutes/
- OPP reports: http://www.nikhef.nl/pub/experiments/bfys/lhcb/vertex/documents/oppreports/VeloUpgradeModules/
- LHCb Velo upgrade web page: https://lbtwiki.cern.ch/bin/view/VELO/VELOUpgrade
- photographs:
Documentation
Setup for module production QA (last update 22/9/2016)
There are two tests:
1. quick electrical test ("20 seconds"), mainly to check that wirebonds are ok. This test should take place in the clean-room. For this we need:
- LV (incl. PC for controls?)
- DAQ
- fibers to connect to DAQ
- database to summarize results
2. burn-in test ("24 hours"). For this we need:
- LV
- HV (till 1000V; must have precise current control/monitor )
- PC with PVSS to control LV and HV
- DAQ
- fibers to connect to DAQ
- PC to run data analysis (needs to happen in real time as data volumes are very large)
- database to summarize results
- 19 inch rack
- CO2 cooling
- vacuum tank
- if not in the cleanroom, a 'tent' to protect setup
We will have only one DAQ system, the so-called 'mini-DAQ'. A system consists of a PCI express card in an ASUS ESC 4000 G3 server PC. (See https://www.asus.com/us/Commercial-Servers-Workstations/ESC4000_G3/). As we have only one system, we either need to do both tests in the same place, or pull fibers.
A lot of what we do depends on where we do test 2. If we do it in the clean room, then we need a blow system for the CO2. If we do it in the vacuum lab, then we need to pull a lot of optical fibers. To take this decision, we need to understand:
- when is the blow system available? how often do we need to change bottles? is bottled CO2 dry and clean enough? is a blow system with cryogenic CO2 an option?
- is the standard CO2 cooler reliable enough?
Things that we can prepare before the decision on the location of test 2:
- finish the vacuum tank (Q4 2016)
- collect LV and HV units, 19 inch rack (Q4 2016)
- configure the PC for LV and HV controls (Q1 2017? does this make sense if we do not have a module yet?)
- prepare DAQ system (Q1 2017)