TY - CPAPER
AU - Curbis, F.
AU - Mansten, E.
AU - Olsson, D.F.
AU - Thorin, S.
TI - Relative Bunch Length Measurements at MAX IV Linac
J2 - Proc. of FEL2015
AB - The commission of the MAX IV linac recently started and among other features, some attention has been dedicated to the characterization of the bunch length compression. Instead of the most commonly used magnetic chicanes, in the MAX IV linac two double achromats can compress the photo-cathode beam from a few ps to hundred fs level. Since the linac is not yet equipped with dedicated diagnostics for absolute bunch measurements, we performed relative measurement of the bunch length. We take advantage of the transition radiation emitted by the bunch when crossing a ceramic gap discontinuity, which is situated after the bunch compressors. The signal is picked up by horn antennas and directed to diodes sensitive to different frequencies. In this contribution we show the first experimental results and the comparison with simulations of our specific geometry.
PB - JACoW
CY - Geneva, Switzerland
ER -