David presents a concept of a new front end slit with linear motors, absolute encoders and a light- weight slit head to allow fast scanning. The slits should be particular useful for soft- Xray beamlines.
- some discussion about pinhole scans or knife edge scans- agreement: to define an aperature 4 slit blades are required
- hard X-ray beamlines seam to be satisfied with the existing slits
- planned prototype installation SIM beamline mid 2020
- the expected temperature at the blades is relative high 200C could cause vacuum problems, the expected repeatability is 5 mum
- Claude: the temperature/cooling issue will be investigated in more detail
remark from Wayne Sep 23:
Dear David,
As an input to your Fast Slits development:
Cedrat presented at MEDSI 2018 several fast slit setups they're working on.
I put some pictures and videos on //scratch0/scratch/GW61
Their presentation can also be found under: http://accelconf.web.cern.ch/AccelConf/medsi2018/talks/thopma01_talk.pdf
Just as an input.