TY - CPAPER
AU - Miyahara, F.
AU - Furukawa, K.
AU - Ichimiya, R.
AU - Iida, N.
AU - Ikeno, M.
AU - Kaji, H.
AU - Okazaki, T.
AU - Satoh, M.
AU - Shoji, M.
AU - Suwada, T.
AU - Tanaka, M.
AU - Yano, Y.
TI - Beam Diagnostics and Timing Monitoring for SuperKEKB Injector Linac
J2 - Proc. of IBIC2014
AB - The SuperKEKB injector linac has multiple operation modes for the electron beam injection into 3 separate rings, SuperKEKB HER, PF (Photon Factory) Ring and PF-AR, and the positron beam injection into the damping ring and the SuperKEKB LER. The operation modes can be switched every 20 milli-second with arbitrary order. The beam parameters such as charge, energy and emittance are different for each of the rings. Moreover, the bunch charge of the electron beam, 5nC, is 5 times higher and the emittance of ~10 mm•mrad is 30 times lower than those of the KEKB injector. Thus, development of BPM readout system with a wide dynamic range and installation of optical fiber detector with a good S/N ratio for the wire scanners and bunch-length monitor have been performed. For stable operation of the linac, many timing signals have to be monitored as well. To that end we have developed 32-bit multi-hit time-to-digital converters (TDCs) with 1-ns resolution. The first beam tests of those systems are reported in this paper.
PB - JACoW
CY - Geneva, Switzerland
SP - 110
EP - 113
KW - linac
KW - timing
KW - electron
KW - positron
KW - target
DA - 2014/10
PY - 2014
SN - 978-3-95450-141-0
UR - http://jacow.org/IBIC2014/papers/mopf28.pdf
ER -