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MEASUREMENTS OF TRANSVERSE PROJECTED EMITTANCE FOR DIFFERENT BUNCH CHARGES AT PITZ

S. Rimjaem, J. Grabosch, L. Hakobyan, Y. Ivanisenko, M. Khojoyan, G. Klemz, M. Krasilnikov, Mahmoud Mahgoub, Mikhail Nozdrin, Andrii P. Shapovalov, Roman Spesyvtsev, Lazar Staykov, Frank Peter Stephan, G. Vashchenko, Dieter Richter

Open publisher page 5 citations

Abstract

Transverse projected emittance optimization is one of the main research activities at the Photo Injector Test facility at DESY, Zeuthen site (PITZ). The emittance measurement program in the 2008/2009 run period concentrated on the measurement using a single slit scan technique. The photocathode laser profile was optimized yielding small emittance. In standard projected emittance measurements, a flat-top temporal profile was used. For the nominal 1 nC bunch charge, emittance values down to less than 1 mmmrad were measured. Emittance optimizations for lower charges were also conducted using the same measurement setup and procedure as for the case of 1 nC. Optimizations and measurement results of the transverse projected emittance for the bunch charges of 1, 0.5, 0.25 and 0.1 nC are presented and discussed in this paper.

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What this paper is about

Transverse projected emittance optimization is one of the main research activities at the Photo Injector Test facility at DESY, Zeuthen site (PITZ). The emittance measurement program in the 2008/2009 run period concentrated on the measurement using a single slit scan technique. The photocathode laser profile was optimized yielding small emittance. In standard projected emittance measurements, a flat-top temporal profile was used. For the nominal 1 nC bunch charge, emittance values down to less than 1 mmmrad were measured. Emittance optimizations for lower charges were also conducted using the same measurement setup and procedure as for the case of 1 nC. Optimizations and measurement results of the transverse projected emittance for the bunch charges of 1, 0.5, 0.25 and 0.1 nC are presented and discussed in this paper.

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Available abstract

Transverse projected emittance optimization is one of the main research activities at the Photo Injector Test facility at DESY, Zeuthen site (PITZ). The emittance measurement program in the 2008/2009 run period concentrated on the measurement using a single slit scan technique. The photocathode laser profile was optimized yielding small emittance. In standard projected emittance measurements, a flat-top temporal profile was used. For the nominal 1 nC bunch charge, emittance values down to less than 1 mmmrad were measured. Emittance optimizations for lower charges were also conducted using the same measurement setup and procedure as for the case of 1 nC. Optimizations and measurement results of the transverse projected emittance for the bunch charges of 1, 0.5, 0.25 and 0.1 nC are presented and discussed in this paper.

Key concepts: Thermal emittance, DESY, Transverse plane, Physics, Optics, Photocathode, Beam emittance, Beam (structure)

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