A Scintillating-fiber Beam Profile Monitor for the DAFNE BTF
A scintillating-fiber beam profile detector has been designed, built and tested, for the monitoring of the position and size of the electron beam of the DAFNE, the recently commissioned electron beam-test facility at the Frascati LNF. A description of the detector construction and assembly, together with the results achieved during the 2003-2004 run, are here reported.
Performance and upgrade of the DAFNE Beam Test Facility (BTF)
The DAFNE Beam Test Facility (BTF) at the Frascati National Laboratory of INFN (LNF) has been operational since October 2002. This facility provides electron and positron beams with tunable energy from 25 MeV to 750 MeV, while the intensity can be varied from 10/sup 10//pulse @ 0-50 Hz down to a single particle. In the last two years many experiments and beam tests have been hosted, so that the large use of the facility pushed the DAFNE staff to upgrade both the beam line, in order to improve the duty cycle, limited by frequent beam injection in the DAFNE main rings, and the diagnostic devices. The beam characteristics, the user experience and their typical measurements, the diagnostic tools developed and the available equipment are presented. Finally, we report on the facility upgrade and on operation in the new configuration.
DAFNE Beam Test Facility Upgrade Proposal
Introduction During year 2002 the DAFNE Beam Test Facility (BTF) has been successfully commissioned. In the fall of the same year, the first users started taking data exploiting the beam extracted from the DAFNE injection system, down to the BTF experimental hall. The BTF performance and the first user experience are fully described elsewhere [1]. The availability of the facility was limited by the main DAFNE experiments, KLOE and DEAR. The KLOE detector is able to take data also during the injection of the beam, practically leaving no time for BTF operation. During DEAR (FINUDA from 2003 on) operation the available duty cycle for the BTF is ≈ 50%. The limitations imposed by the main experiments, as well as the growing interest for the facility pushed us to study a modification of the beam line in order to improve the operation duty cycle.