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ELETTRA

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PM10 Characterisation of Fast Faraday Cups at the ELETTRA Linac diagnostics, electron, instrumentation, linac 113
 
  • M. Ferianis, S. Bassanese, G. D'Auria
    ELETTRA, Sincrotrone Trieste, Trieste, Italy
  • C. Deibele
    SNS, Spalation Neutron Source, Oak Ridge, TN, USA
  • M. Poggi
    INFN-LNL, Laboratori Nazionali di Legnaro, Legnaro, Italy
  A major upgrade of the ELETTRA injector is currently on going: the 1 GeV LINAC will be replaced with a 100 MeV LINAC and a 2.5 GeV Booster Synchrotron. A new set of diagnostics is now under development for these two new machines. The new Fast Tune measurement system for the Booster represents a significant improvement as compared to the present Tune measurement system. With the Booster cycling at 3 Hz, horizontal and vertical tunes have to be measured during the energy ramp, whose duration is 160 ms. To completely characterise the dynamics of the Booster during the energy ramp, a set of 25 tune values has been required, corresponding to a 6.4 ms interval between successive measurements. The accuracy of this measurement is <10-3. Such frequency spans are achievable using a Real Time Spectrum Analyser (Tektronix 3026), which is a fast sampling instrument with built-in FFT algorithm and data presentation. In this paper, after describing the system specifications and architecture, we present the results of the preliminary tests, which have been carried out both in the laboratory and on the Storage Ring.