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AWAKE spectrometer meeting
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Europe/Zurich
Present: Fearghus, Ishkhan, Matthew, Simon
Ishkhan
- Light calibration on linear stage. See slides.
- Under development.
- Parts being ordered.
- Absolute calibration ? I.e. relative movement between light stage and screen ?
-> Should not be an issue once all fixed (?)
-> Attach legs of stage to spectrometer vacuum vessel (?)
-> Get light as close to screen as possible.
-> Why a 14 cm bulb ? And not something smaller ? This covers the vertical extent of screen ? Need something much smaller.
-> Motors can be controlled remotely. Done automatically in control software ?
Fearghus
- August run:
- Tripod from BI with camera and lens on it, placed in line with screen.
-> Look to use (UCL) Nikon lens.
-> May want to order our own camera, more suited to lens and system.
-> When new (smaller) optical table comes, swap and remove large table; goes where ?
-> Ordered double-sided sticky tape for sticking scintillator screen to vacuum.
- Talking to Jan & Phillipe about survey of vacuum chamber and magnet position.
- Hope to get 0.5 mm accuracy.
-> To work with Michele on camera software.
-> Michele on light breaker circuit: What is acceptable light ? To discuss further.
- Transport of 15 MeV electron beam ? Looking into.
-> Edda has looked at spectrometer tech. doc. ; should be sent out for checks ? What does this mean; it is not complete ?
To meet next week; decide date on Monday when Stefano is back.
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