AWAKE spectrometer meeting

Name: AWAKE spectrometer meeting
Start: 2017-06-26T11:00:00+02:00
End: 2017-06-26T12:00:00+02:00
Location: No location set

Monday 26 Jun 2017, 11:00 → 12:00 Europe/Zurich

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Present: Fearghus, Ishkhan, Matthew, Simon, Stefano

Mirrors and mounts - Stefano

- Mirrors received. They all look fine and in good condition.

-> Need to be transported for coating.

- No new news on mirror supports; still waiting for quotes.

-> Working on calibration with moving target.

Dark room - Fearghus

- Had a meeting to discuss dimensions.

- Increased size of fire-door window to 550 x 200 cm^2. Cost is $3250.

August run - Fearghus

- Install scintillator and (cheap) camera(s)

- Measure backgrounds. Should learn:

-> Profile of background on screen

-> Relation to magnet current

-> Background as a function of conditions, e.g. plasma density

-> Relate backgroundto beam size from Marlene's diagnostic.

Measure vacuum chamber position - Fearghus

- Talked to Jan.

-> Need to first understand how a survey and better uncertainty in position will affect energy measurement.

Lenses - Fearghus / Stefano

- Lenses used in first spectrometer tests. Still at CERN and in stock. Also others which could be used.

- Three Nikon (f mount) lenses bought by UCL are at CERN.

Light switch for hall - Fearghus

- Agreed and will be located outside hall.

Temperature - Fearghus

-> Need to look up what 12C for the cooler means running camera at.

Trigger control circuit - Simon

-> Simple magnetic switch on door can be bought off the shelf.

-> Circuit for light sensitivity to be manufactured at UCL.

- All seems to be in order for this failsafe to ensure the CCD does not get overloaded with light.

Workpackage description - Fearghus

- On EDMS and informed Edda and Ans.

-> Stefano has requested a short write-up on the vibrational analysis from ESO people by end of August.

Next meeting, Monday 17 July @ 10:00 (UK) / 11:00 (CERN).

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