New MOPOS front-end (Manfred)
- Reminder of beam specifications (any changes since EDMS document?)
- Working frequency of 200MHz only (no more 40MHz chain for single bunches)
- Effect of diode limiter to be tested in lab (will coupler survive)
- Are there other solutions for the high sensitivity channel (gain control)?
- Choice of best sensitivity (L/M/H) for position to be decided (SW or FPGA) - more studies needed
- Several components yet to be radiation qualified (GaAs switches etc)
- Stripline type BPM signal levels to be verified (attenuator required?)
- Could we improve on the calibration generator?
New MOPOS project milestones (Andrea)
- System expected to be operational after LS2 (latest schedule here: https://ls1ls2.web.cern.ch/sites/ls1ls2.web.cern.ch/files/LS2.jpg) with MOPOS dismantled
- Enough RF splitters to have one full sextant in parallel (Old/New)
- Main production must start by early 2019
- System based on 6 VME crates with a total of ~70 VFCs (each VFC covers 4 BPMs)
- 2018 key year for electronics tests - clear milestone plan available
- Draft version of VFC documentation (memory map) available - doubts about best way to cover turn-by-turn data (all turns or pre-selected start)
- Back-up plan to keep old MOPOS until new system operational
LEIR injection BPMs (Michele)
- 2 BPMs installed between LN3 and LEIR (ITE line) (PS switch-yard)
- First one suffers from electron-cloud build-up
- Clear effect of PS magnet stray-field (compensation?)
- Proposal :
- Modify head amplifier to counter RF issues
- Test in lab to do and then production
- Once full line equipped (YETS) need to see best cure for issues observed (magnets or)
Access to TN (Stephane Bart)
- Linux and Windows based computers
- Unfortunately load-balancing does not work so each user needs his/her own machine
- BITSxx machines to be decommissioned early 2018
- Replacement PCs (Linux/Windows) to be requested from vpc-support@cern.ch with dedicated BI customisation (initial set-up)
- List of existing machines to be extracted with a proposed upgrade plan (Stephen et al)
- CC7 machines also available for FESA3 software development