| Paper |
Title |
Page |
| TUP009 |
First Operation of the FLASH Machine Protection System with Long Bunch Trains
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262 |
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- L. Fröhlich, L. Fröhlich
Uni HH, Hamburg
- M. Görler, P. Göttlicher, D. Noelle, D. Pugachov, H. Schlarb, S. Schreiber, M. Staack, M. Werner
DESY, Hamburg
- A. Hamdi, M. Luong, J. Novo
CEA, Gif-sur-Yvette
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The linac-based free electron laser facility FLASH at DESY Hamburg is designed to transport an electron beam with an average power of more than 50 kW. To avoid serious damage to accelerator components, a fast active machine protection system (MPS) stops the production of new bunches if hazardous machine conditions are detected. This paper gives an overview of the MPS topology and its subsystems. Furthermore, we present results from the commissioning of the fast beam interlock system that has for the first time allowed to operate the accelerator with macropulses of up to 600 bunches.
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| TUP062 |
Experimental Optimization of TTF2 RF Photoinjector for Emittance Damping
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391 |
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- Y. Kim
FEL/Duke University, Durham, North Carolina
- K. Floettmann, F. Loehl, S. Schreiber
DESY, Hamburg
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To get lasing and saturation at FEL facilities, we should generate high quality electron beams with a low emittance, a high peak current, and a low energy spread. Generally, the RF photoinjector is a key component to generate such a high quality beams. During DESY TESLA Test Facility (TTF) phase 2 commissioning, we optimized our L-band RF photoinjector and bunch compressor by comparing measurement results and simulation ones. In this paper, we describe our optimization experiences to get about 1.1 mm.mrad transverse normalized emittance for 1.0 nC single bunch charge and 4.4 ps RMS bunch length from TTF phase 2 RF photoinjector.
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