Proof-of-Principle Tests for Slit-scan-based Slice Emittance Measurements at PITZ Article Swipe

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Raffael Niemczyk , Matthias Groß , Igor Isaev , Quantang Zhao , Prach Boonpornprasert , James Good , Xin Li , Gregor Loisch , F. Stephan , M. Krasilnikov , Osip Lishilin , Davit Kalantaryan , Yves Rénier , W. Hillert , David Melkumyan , Christian Koschitzki , A. Oppelt , Ye Chen , Houjun Qian , Holger Huck , Chaipattana Saisa-ard ·

YOU? · · 2018 · Open Access · · DOI: https://doi.org/10.3204/pubdb-2018-05139 · OA: W2972602590

Transverse slice emittance is one of the most important properties of high-brightness electron beams for free-electron lasers (FELs). The photo injector test facility atDESY in Zeuthen (PITZ) develops high-brightness electron sources for modern FELs. With a 23 MeV, 1 nC beam at PITZ the experimental slice emittance characterizationwith the quadrupole scan technique is complicated by strong space charge effects. Combining the slit scan technique with a transverse deflecting cavity (TDS) allows for time-resolved emittance measurements of such a space-charge-dominated beam. The first proof-of-principle results of slice emittance measurements at PITZ based on the ’TDS + slit scan’-technique are presented in this paper