Author: Di Giacomo, M.
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.