| Paper |
Title |
Page |
| WG512 |
Longitudinal Diagnostics with THz Radiation
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48 |
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- H. Delsim-Hashemi, P. Schmüser
Uni HH, Hamburg
- O. Grimm, B. Schmidt
DESY, Hamburg
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According to the FEL theory, the longitudinal charge distribution in an electron bunch has an important effect on lasing process. For FLASH at DESY, structures in the order of 10 μm play a crucial role in SASE production. The investigation of the electron bunch longitudinal charge distribution and its bunch to bunch changes is one of the most important issues for optimizing the operation of the machine and improving its stability. Single shot spectroscopic in the 10–200 μm regime is beyond the capability of existing spectroscopic diagnostic tools. This paper introduces a new diagnostics method based on fast spectrally resolved detection of coherent infrared radiation from electron bunches. Measurement results at FLASH with this spectrometer in both scanning mode and single shot mode are presented and discussed.
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Slides
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