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Rao, Y.-N.

Paper Title Page
MPPE003 Monte Carlo Simulations of Thin Internal Target Scattering In CELSIUS
 
  • Y.-N. Rao
    TRIUMF, Vancouver
  • D. Reistad
    TSL, Uppsala
 
  In the practical operation of the storage ring CELSIUS with the hydrogen pellet target, we simetimes observe a cooling phenomenon in the longitudinal phase space, that is, the circulating beam's phase space gets shrunk instead of blown up. This phenomenon occurs independently on the electron cooling. In this paper, we aim to investigate and interpret this phenomenon as well as the beam lifetime in the presence of hydrogen pellet target with and without rf and with and without electron cooling in CELSIUS using Monte Carlo simulations.  
WPAE008 Redesign of a Low Energy Probe Head 1105
 
  • Y.-N. Rao, G.H. Mackenzie, T.C. Ries
    TRIUMF, Vancouver
 
  The present situation of the low energy probe L·102 in TRIUMF cyctron is that the thickness of finger 5 is uniform in the radial direction and its weight which amounts to ~447 g is affecting its re-circulating ball mechanism and causing it to fall below the median plane over its range of movement (13.890 to 161.515 inch). We first made simulations to determine the optimum thickness of the probe head vs the radial length so as to reduce its weight. And then, we compared the simulation results with experimental measurements made. Finally, we calculated the temperature rise caused by the beam power dumped on the probe, and figured out the maximum beam current that can be dumped on the finger.