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|Title: ||Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection|
|Authors: ||Phillips, P. J.|
Gillespie, W. A.
Jamison, S. P.
van der Meer, A. F. G.
MacLeod, Allan M.
|Affiliation: ||University of Abertay Dundee. School of Computing & Engineering Systems|
Electron bunch diagnostics
|Issue Date: ||2007|
|Publisher: ||Joint Accelerator Conferences Website|
|Type: ||Conference Paper|
|Rights: ||This is the published version of the Conference Paper (c)DIPAC 2007. Available from Joint Accelerated Conferences Website (JACoW) at: http://www.jacow.org/|
|Citation: ||Phillips, P.J. et al. 2007. Single shot longitudinal bunch profile measurements by temporally resolved electro-optical detection. In: Proceedings of 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators: DIPAC 2007, Venice May 20-23 2007. [Online] Available from: http://accelconf.web.cern.ch/AccelConf/FEL2008/papers/tupph076.pdf|
|Abstract: ||For the high gain operation of a SASE FEL, extremely short electron bunches are essential to generate sufficiently high peak currents. At the superconducting linac of FLASH at DESY, we have installed an electro- optic measurement system to probe the time structure of the electric field of single ~100 fs electron bunches. In this technique, the field induced birefringence in an electro-optic crystal is encoded on a chirped picosecond laser pulse. The longitudinal electric field profile of the electron bunch is then obtained from the encoded optical pulse by a single shot cross correlation with a 35 fs laser pulse using a second harmonic crystal (temporal decoding). An electro-optical signal exhibiting a feature with 118 fs FWHM was observed, and this is close to the limit of resolution due to the material properties of the particular electro-optic crystal used. The measured electro-optic signals are compared to bunch shapes simultaneously measured with a transverse deflecting cavity.|
|Appears in Collections:||Computing & Engineering Systems Collection|
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