OLD [4/14] Estimated Beam Rates at the Exit of AIRIS

These rates were appropriate for the ATLAS User's meeting in 2014. However, since then, the estimated rates have been revised and only the ones on the previous page should be used.

Beam RatesFor 10 MeV/u primary beams (~8-9 MeV/u secondary beams). Rates can be uncertain up to an order of magnitude. For any questions or comments please contact Calem Hoffman or Brahim Mustapha. [4/22/14] 

Parameters included in the rate estimations

Primary Beam:

  • Energy - 10 MeV/u
  • Intensity - 1 particle-uA
  • Targets:

  • ~1 mg/cm2 average thickness [6.6x1019 atoms per cm2]
  • Liquid film targets for proton and deuterons and solid rotating Be and C targets

  • Cross Sections:

  • Integrated cross sections were estimated from experiment or calculated using DWBA
  • Angular distributions were calculated using the code PTOLEMY

  • AIRIS Transmission:

  • Transmission through AIRIS was calculated for a number of specific cases using TRACK
  • Reaction kinematics, angular distributions, and recoil particle straggling were accounted for using LISE++ to generate the input particle rays for TRACK
  • The secondary beam transport was opitmized while ensuring suficient suppression of the unreacted primary beam
  • Smooth functions based on these data were determined for the different classes of reaction type e.g. (d,p), (d,n), +2n, +2p etc.
  • Charge State Fraction:

  • For 10 MeV/u primary beams, Z < 9 is 1 (100% in the fully stripped charge state)
  • Above Z = 8, a linear extrapolation was applied to account for the largest fraction charge state (which may not be highest charge state)

  • Table of Information Used in Beam Rate Estimates