CTF3 Streak Camera Results and Improvements Aurélie Rabiller BE-BI-PM 09.02.2012.

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Presentation transcript:

CTF3 Streak Camera Results and Improvements Aurélie Rabiller BE-BI-PM

Summary 2011 Measurements in CR, DL and CLEX Optical lines improvements Streak camera operation Discussion 2CTF3 streak camera - February 2012

Streak camera optical lines OTR light sources Synchrotron light sources DL lab CLEX lab CR lab 3CTF3 streak camera - February 2012

2011 Measurements Combiner ring: Bunch length stability and bunch spacing Bunch length: 200 ps window Turn 1 to Turn 4 ( ) Very few measurements this year due to the difficulties to operate the beam + Misalignment of the optical line Multi-turn bunch length stability (July) Bunch Spacing (July) Bunch spacing : 500 ps window Turn2 and 3 ( ) 4CTF3 streak camera - February 2012

CLEX: bunch length and bunch spacing Bunch length and bunch spacing along the train (July) Bunch length and bunch spacing along train: 25 ps/mm speed 2011 Measurements First measurements with the line done successfully Need more beam time to finish commissioning 5CTF3 streak camera - February 2012

Optical lines improvements Combiner ring: re-alignment of the lines => next week Delay Loop: re-aligned last year, shoud be ready for measurements (No measurements last year due to difficulties to send the beam in DL) CLEX: - addition of a light shielding => next month - replacement of the lens by an elliptical mirror => this year Third streak camera equiped with readout camera => ready => One streak camera for each lab 6CTF3 streak camera - February 2012

Operation of the streak cameras General procedure: spot adjustment in focus mode (no sweep) : the spot should be centered on the slit and as focused as possible slit reduced to mm (depending of the spot size and the light intensity) In Focus mode, the camera is really sensitive to light switch in sweep mode with the biggest time window (1ns) to find the train (trigger delays adjustment) Reduce step by step the time window with trigger and gain adjustment For this procedure, the presence in the lab is required 7CTF3 streak camera - February 2012

Old streaks: Manual control of shutter, slopes and gain => For the operation of old streaks, presence in the lab required no online values => data needed to be processed (Matlab or equivalent) New streak: automatic control of shutter, slopes and gain online bunch length value provided possibility to use cursors on the graphic window for rough bunch spacing values possibility to control the camera with LabView application Operation of the streak cameras 8CTF3 streak camera - February 2012

Online processing of the data (Labview application or else) Remote control of the cameras... Discussion 9CTF3 streak camera - February 2012