TY - CPAPER
AU - Thieberger, P.
AU - Brooks, S.J.
AU - Hamdi, K.
AU - Hulsart, R.L.
AU - Mahler, G.J.
AU - Michnoff, R.J.
AU - Minty, M.G.
AU - Trbojevic, D.
TI - Proposed Pulse Stretching of BPM Signals for the Position Determination of Very Short and Closely Spaced Bunches
J2 - Proc. of IBIC2014
AB - A proposal for a future ultra relativistic polarized electron-proton collider (eRHIC) is based in part on the transport of multiple electron beams of different energies through two FFAG beam transports around the 3834 m long RHIC tunnel circumference in order to recirculate them through an Energy Recovery Linac for their stepwise acceleration and deceleration. For each of these transports, the beams will travel in a common vacuum chamber, horizontally separated from each other by a few mm. Determining the position of the individual bunches is challenging due to their very short length (~12 ps rms) and their temporal proximity (less than 4 ns in some cases). Providing pulses adequate for accurate sampling is further complicated by the less-than-ideal response of long coaxial cables. Here we propose two approaches to produce enhanced, i.e. stretched pulse shapes of limited duration; one based on specially shaped BPM electrodes and the other one on analog integration of more conventional stripline BPM signals. In both cases, signals can be generated which contain relatively flat portions which should be easier to sample with good precision without requiring picoseconds timing accuracy.
PB - JACoW
CY - Geneva, Switzerland
SP - 294
EP - 297
KW - electron
KW - simulation
KW - synchrotron-radiation
KW - collider
KW - synchrotron
DA - 2014/10
PY - 2014
SN - 978-3-95450-141-0
UR - http://jacow.org/IBIC2014/papers/tupf02.pdf
ER -