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TY - CONF AU - Rossi, A.R. AU - Bacci, A. AU - Chiadroni, E. AU - Cianchi, A. AU - Curatolo, C. AU - Drebot, I. AU - Giribono, A. AU - Mostacci, A. AU - Petrillo, V. AU - Rossetti Conti, M. AU - Serafini, L. AU - Vaccarezza, C. AU - Variola, A. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Quadrupole Scan Emittance Measurements for the ELI-NP Compton Gamma Source J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - The high brightness electron LINAC of the Compton Gamma Source at the ELI Nuclear Physics facility in Romania is accelerating a train of 32 bunches with a nominal charge of 250 pC and nominal spacing of 16 ns. To achieve the design gamma flux, all the bunches along the train must have the designed Twiss parameters. Beam sizes are measured with optical transition radiation monitors, allowing a quadrupole scan for Twiss parameters measurements. Since focusing the whole bunch train on the screen may lead to permanent screen damage, we investigated non-conventional scans such as scans around a maximum of the beam size or scans with a controlled minimum spot size. This paper discusses the implementation issues of such a technique in the actual machine layout. PB - JACoW CP - Geneva, Switzerland SP - 126 EP - 129 KW - emittance KW - electron KW - quadrupole KW - linac KW - laser DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-MOPMB019 UR - http://jacow.org/ipac2016/papers/mopmb019.pdf ER -