Title :
Planned optical diagnostics for the APS low-energy undulator test line
Author :
Lumpkin, A.H. ; Berg, W.J. ; Yang, B.X.
Author_Institution :
Adv. Photon Source, Argonne Nat. Lab., IL, USA
Abstract :
At the Advanced Photon Source (APS), an alternate configuration of the injector linacs (low-energy undulator test line) using an rf gun as the source is projected to provide low normalized emittance electron beams (εn~5π mm mrad). In order to characterize such beams, the present intercepting Chromox screens with limited spatial resolution and temporal response are being complemented by optical transition radiation (OTR) screens at selected positions in the beamline to provide sub-100 μm spatial resolution and sub-ps response times. Both gated cameras and streak cameras will be used to measure the beam properties. Additionally, coherent transition radiation (CTR) and diffraction radiation (DR) based techniques will be evaluated. These beam characterizations will support self-amplified spontaneous emission (SASE) scaling experiments
Keywords :
electron accelerators; particle beam diagnostics; storage rings; transition radiation detectors; wigglers; APS low-energy undulator test line; Advanced Photon Source; Chromox screens; beam characterizations; coherent transition radiation; diffraction radiation; injector linacs; limited spatial resolution; low normalized emittance electron beams; optical diagnostics; optical transition radiation screens; self-amplified spontaneous emission scaling experiments; temporal response; Cameras; Delay; Electron beams; Electron optics; Linear accelerators; Optical diffraction; Spatial resolution; Stimulated emission; Testing; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749865
