COMPARATIVE STUDIES OF RECONSTRUCTION METHODS TO ACHIEVE MULTI-DIMENSIONAL PHASE SPACE INFORMATION

High Intensity Proton Accelerators like SNS, PSI or future machines like ESS or Isis upgrade cannot tolerate high losses due to activation. Standard beam diagnostics may not provide enough information about potential loss sources like beam � lamentation or halo. Moreover, the application of interceptive methods like slits or pepperpot can be seriously discouraged by either high power deposition or explicit requirements for non-destructive methods like on-line diagnostics near superconducting cavities. Reconstruction of the beam distribution with a tomography method based on Maximum Entropy could help to overcome those problems and is easily to integrate in already existing facilities becausethe algorithmdoesnot dependon the experimental pro� le measurement technique. Furthermore beam tomography can be employed on both spatial and phase-space reconstruction. The paper compares results from two differentsoftware packages from PSI (Maximum Entropy Tomography MENT) with the code used at RAL (MemSys5).