| Paper |
Title |
Page |
| MOPC045 |
First Measurement Results of the PSI 500kV Low Emittance Electron Source
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169 |
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- M. Pedrozzi, Å. Andersson, R. J. Bakker, R. Ganter, C. Gough, C. P. Hauri, R. Ischebeck, S. Ivkovic, Y. Kim, F. Le Pimpec, K. B. Li, P. Ming, A. Oppelt, M. Paraliev, T. Schietinger, V. Schlott, B. Steffen, A. F. Wrulich
PSI, Villigen
- S. C. Leemann
MAX-lab, Lund
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The Paul Scherrer Insitute (PSI) is presently developing a low emittance electron source for the PSI-XFEL project. The target beam parameters at the source are I=5.5 A, Q=0.2 nC and a slice emittance below 0.2 mm.mrad. The gun concept consists of a high gradient "diode“ stage followed by a two-frequency two-cell cavity to allow fine tuning of the longitudinal phase space. This paper reports on the first experimental results obtained with the PSI 500 kV test stand. The facility consists of a 500 kV diode stage followed by a diagnostic beam line including an emittance monitor. An air-core transformer based high voltage pulser is capable of delivering a pulse of 250 ns FWHM with amplitude up to 500 kV. The diode gap between two mirror polished electrodes is adjustable to allow systematic gradient studies. The electrons are produced by a 266nm UV laser delivering 4μJoules on the Cu-cathode.
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| WEPC011 |
Using Multi-bend Achromats in Synchrotron Radiation Sources
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2007 |
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- M. Eriksson, A. Hansson, S. C. Leemann, L.-J. Lindgren, M. Sjöström, E. J. Wallén
MAX-lab, Lund
- L. Rivkin, A. Streun
PSI, Villigen
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Multi-bend achromats offer small electron beam emittance, large energy acceptance and a good dynamic aperture. Two examples are discussed in the article, each using 7-bend achromats; a 12 achromat lattice and a 20 achromat one. Some possible technical solutions associated with the dense lattices are discussed: magnet technology, vacuum system and RF system. Some characteristics of the two rings are also presented; effects of Intra Beam Scattering, Touschek life-time and the electron beam parameter values.
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