Performance of a streak camera using reflective input optics

Authors: Guenther Rehm (Diamond Light Source) , Cyrille Thomas (Diamond Light Source) , Ian Martin (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: The first International Particle Accelerator Conference (IPAC’10)
Peer Reviewed: No

State: Published (Approved)
Published: May 2010

Abstract: Electron bunch profile and length measurement from large bandwidth synchrotron radiation with a streak camera can be strongly limited by the chirp introduced by the length of material present in the input refractive optics of streak cameras. Elimination of the chirp can be done either by filtering the bandwidth of the synchrotron radiation pulses, by measuring time resolved spectra with the streak camera, or by replacing the front optics lenses by focusing mirrors. The first solution reduces the power available, thus limiting measurements to a minimum bunch current that can be too high to assess the ’zero’ current bunch length. The second elegant solution allows measurement of the bunch length with the whole bandwidth and available power but with loss of the second sweep axis in the camera, so that no beam dynamics can be observed. In order to prevent any pulse chirp, keep all the available power and capability of beam dynamics observation, we designed new input optics exclusively with mirrors. We present here our design and the results of the system with our streak camera, measuring picosecond bunch profile in the new Diamond low-alpha lattice.

Subject Areas: Physics

Technical Areas: Diagnostics , Optics

Added On: 01/12/2010 18:17

Discipline Tags:

Optics Physics

Technical Tags: