AWAKE spectrometer meeting

Tuesday 30 May 2017, 16:00 → 17:00 Europe/Zurich

Present: Fearghus, Lawrence, Matthew, Simon, Stefano (39th birthday today)

Absent: Ishkhan (honeymoon so away !), Michele

 

Fearghus, Lawrence and Matthew to access AWAKE area next Wednesday morning to view installation of dipole and vacuum chamber as well as experiment in general. 

-> Stefano add Matthew to BI Impact.

 

Mirror supports - Stefano

- Meeting with Nicolas and Candy

  - Discussed points raised by Fearghus and any issues will be corrected.

  - Nicolas to do first control by tomorrow.

  - Stefano then to do the next control.

  - Will go to the workshop on Wednesday and discuss with them to get quotes, etc.

  - Under expectation of receipt of supports mid-August.

  - In the meantime, preparatory work, e.g. drilling holes, will take place.

  - First week of September for installation. 

 

Mirrors - Stefano

- Ready to be shipped.

- Need to pay for insurance for shipping and so UCL to expect this to be charged to Team Account.

- Delivery by end of June.

- Thomas needs a couple of weeks to coat mirrors, standard Al protected.  So ready in July.

 

Dark room - Stefano / Fearghus

- CERN will do the dark room anyway.

- Still need a breakdown of costs for any possible UCL contribution.

  -> Matthew to discuss with Edda and Ans.

- Optical tables is currently 1800 x 900 mm^2; option is to have 900 x 600 mm^2.

  - https://www.newport.com/c/vision-isostations

  - https://www.newport.com/p/M-VIS2436-IG2-125A

  - The camera is 800 x 170 mm^2.

  -> BI will buy the small table and put the large table in one of their labs.  Decided to do this. 

 

Interlock - Stefano

- Different cards for e.g. doors, light levels, etc.

-> Need to understand trigger source.

 

Temperature / humidity - Fearghus

- In hand - Fearghus in contact with someone.

 

Lights - Fearghus

- Location of lights under discussion with Ans.

-> Remote light switch needed and what is the cost ?

 

Light detection system - Simon

- Under discussion with some people in UCL labs.

 

Work-package description - Stefano/Fearghus

- Include ESO parts on vibration, etc. at a later date.

- Up-to-date but missing :

  - Vibrational analysis from ESO colleagues

  - Mirror supports

  - Dark room

  - Fire door window

  - Failsafe device

which will all be complete or advanced in about a month.

-> Lawrence to explain situation in his talk in the TB and ask if the document should be released and updated or wait until more complete in about 1 month.

 

Background analysis - Lawrence

-> Would like to increase iris diameter.  Needs discussion with plasma cell people.

-> Or would like a lower Z material.  Ditto.

- Collimation not so effective.

- Need information from this run on beam size from Marlene's diagnostic.

 

Will meet next week at AWAKE meetings and the next dedicated spectrometer meeting a week or two after that.