The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Li, H. AU - Liu, X.Y. AU - Lu, P. AU - Sun, B.G. AU - Tang, L.L. AU - Wang, J.G. AU - Wu, F.F. AU - Yang, Y.L. AU - Zhou, Z.R. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Modified Trigger Mode of Streak Camera to Measure Bunch Longitudinal Distribution in HLS II J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - In Hefei Light Source, the streak camera was used to measure the bunch length and longitudinal distribution using synchronous light. As the RF frequency of HLS II was 204MHz, the streak camera worked at the frequency of 102MHz (half of 204MHz). Because of the bunch lengthening, the streak camera faced the problem, the streak image on the phosphor screen will overlap when the bunch length was above 200.5ps@5% linear error and 10% overlap. In order to solve this problem, an effective solution was to change the working frequency of the streak camera to 136MHz (two thirds of 204MHz), and then the streak image on the phosphor screen will overlap when the bunch length was above 285.6ps@5% linear error and 10% overlap. So a front-end electronic was needed before the synchronizing signals feed into the streak camera. The front-end electronic was designed to convert the 204MHz synchronizing signal to 136MHz. PB - JACoW CP - Geneva, Switzerland SP - 184 EP - 186 KW - electron KW - optics KW - controls KW - brightness KW - hardware DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-MOPMB041 UR - http://jacow.org/ipac2016/papers/mopmb041.pdf ER -