Title :
Non-destructive single shot bunch length measurements for the CLIC Test Facility 3
Author :
Dabrowski, A. ; Velasco, M. ; Braun, H.H. ; Corsini, R. ; Döbert, S. ; Lefévre, T. ; Tecker, F. ; Urschütz, P.
Author_Institution :
Northwestern Univ., Evanston
Abstract :
A non-destructive bunch length detector has been installed in the CLIC test facility (CTF3). Using a series of down-converting mixing stages and filters, the detector analyzes the power spectrum of the electromagnetic field picked-up by a single waveguide. This detector evolved from an earlier system which was regularly used for bunch length measurements in the previous CLIC test facility, namely CTF2 [1,2]. Major improvements are increase of frequency reach from 90 GHz to 170 GHz, allowing for sub-ps sensitivity, and single shot measurement capability using FFT analysis from large bandwidth waveform digitisers. The results of the commissioning of the detector in 2006 are presented.
Keywords :
accelerator RF systems; analogue-digital conversion; electromagnetic fields; electron accelerators; electron beams; high-pass filters; linear accelerators; particle beam bunching; waveguides; CLIC test facility 3; CTF3; FFT analysis; RF signals; down-converting mixing stage; electromagnetic field; filters; large bandwidth waveform digitisers; nondestructive single shot bunch length detector; power spectrum; waveguide; Detectors; Electromagnetic fields; Electromagnetic waveguides; Electrons; Frequency measurement; Length measurement; Linear particle accelerator; Radio frequency; Structural beams; Test facilities;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440055
