I had a phone call with Steve from SNS about our maesurements on VB and the next steps.
Here are the main points:

1. They curently work on a new VB version which would be more stable against touching but this means also a higher reflectivity (first measurements at 2mum wavelengths show a 20 times higher value than the original VB) They are further try to work on this
2. For the original VB sample, he proposed a special covering of the parts with VB (namely the Doughnut-baffle) until the installation is done and a removal after the installation.
3. He will send me a cost estimation on the Doughnut-baffle by the end of next week
4. I also got information on the outgassing. It should be very low.
5. I will provide him our maximum budget for the Doughnut-baffle