TY - CPAPER
AU - Antonelli, M.
AU - Cautero, G.
AU - De Sio, A.
AU - Di Fraia, M.
AU - Giuressi, D.
AU - Lizzit, S.
AU - Menk, R.H.
AU - Pace, E.
TI - Diamond-Based Photon BPMs for Fast Electron-Beam Diagnostics in Synchrotron Radiation Sources
J2 - Proc. of IBIC2014
AB - Electron-beam stability is amongst the primary concerns in current Synchrotron Radiation (SR) sources; in particular, in third-generation SR facilities high-brightness beamlines using undulator radiation are extremely sensitive to electron-beam oscillations. Orbit stabilization has been intensively addressed in the past years and many SR machines have been equipped with a Fast Orbit Feedback (FOFB) based on electron Beam-Position Monitors (eBPMs). On the other hand, photon Beam-Position Monitors (pBPMs), besides providing beamline users with crucial calibration data, are also a useful tool for keeping the electron beam under control, by monitoring position and intensity of the delivered radiation. The machine control system can take advantage of this information in order to improve the stability of the electron-beam. A diagnostic beamline, utilizing a couple of fast pBPMs based on single-crystal CVD diamond detectors, has been built and inserted into the central dead-end outlet of one of Elettra’s bending-magnets. Tests have been carried out both during normal machine operations and by deliberately moving the orbit during dedicated shifts. Owing to the outstanding properties of diamond in terms of speed and radiation hardness, the results show how the aforementioned system allows the beam position to be monitored with sub-micrometric precision at the demanding readout rates required by the FOFB. The radiation hardness of the sensors allows the operation over extended periods of time without special maintenance. Therefore, this system is particularly suited for storage-ring sections lacking in electron-beam monitoring and the tested diagnostic line represents a demonstrator for future implementation of pBPMs at several bending-magnet front ends of Elettra.
PB - JACoW
CY - Geneva, Switzerland
SP - 342
EP - 345
KW - electron
KW - photon
KW - radiation
KW - diagnostics
KW - detector
DA - 2014/10
PY - 2014
SN - 978-3-95450-141-0
UR - http://jacow.org/IBIC2014/papers/tupf13.pdf
ER -