Author: Longhitano, A.
Paper Title Page
TUPS075 Experimental determination of impedance and delay time of the 100 Ω meander transmission line for the SPIRAL2 Single Bunch Selector 1710
 
  • M. Di Giacomo
    GANIL, Caen, France
  • P. Balleyguier
    CEA/DAM/DPTA/SP2A, Bruyères-le-Châtel, France
  • A.C. Caruso, F. Consoli
    INFN/LNS, Catania, Italy
  • A. Longhitano
    ALTEK, San Gregorio (CATANIA), Italy
 
  The Spiral2 driver requires a Single Bunch Selector to reduce the bunch repetition rate at the experimental targets. A 100 Ω meander line is used in the beta 0.04 medium energy line of the Spiral2 driver. The non standard characteristic impedance figure helps to reduce the pulsed power but introduces the problem of calibrated measurements. The paper describes the results of the different methods used to measure the impedance and the delay of the electrodes.  
 
TUPS082 The LEBT Chopper for the Spiral 2 Project 1731
 
  • A.C. Caruso, F. Consoli, G. Gallo, D. Rifuggiato, E. Zappalà
    INFN/LNS, Catania, Italy
  • M. Di Giacomo
    GANIL, Caen, France
  • A. Longhitano
    ALTEK, San Gregorio (CATANIA), Italy
 
  The Spiral 2 driver uses a slow chopper situated in the common section of the low energy beam transport line to change the beam intensity, to cut off the beam in case of critical loss and to avoid hitting the wheel structure of rotating targets. The device has to work up to 10 kV, 1 kHz repetition frequency rate and its design is based on standard power circuits, custom alarm board and vacuum feed-through. The paper summarizes the design principles and describes the test results of the final device which has been installed on the beam line test bench.