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Intensity and phase space limitations of various heavy-ion acceleration methods

Technical Report ·
OSTI ID:6602288
A heavy-ion accelerator suitable for production of new transuranic elements should be capable of providing beams of any given element with energies in excess of 6 MeV per nucleon. Intensities should be of the order of 10/sup 11/ particles per second or more. Proposed heavy-ion linacs and cyclotrons which use conventional ion sources with preacceleration and stripping can readily achieve the desired energies. However, by conservative estimates the intensities provided by these acceleration methods should be low by about one order of magnitude, the cyclotron yielding the larger number of particles. New types of ion sources, such as plasma-containment devices, laser-produced plasmas etc., are potentially capable of producing short pulses of high-charge state ions (Z > 20) which could be accelerated directly without stripping. However, even if 10/sup 11/ particles could be produced per pulse, it is estimated that, depending on pulse length, the space charge limit of the accelerator could reduce the intensity by several orders of magnitude. The electron ring accelerator should be a promising alternative to the other schemes. Calculations show that ion energies in the range of 1000 to 2000 MeV should be feasible by the simple expansion method. For ion masses M > 80 the energy is practically independent of the mass. No high charge states are required, and intensities of 10/sup 11/ ions per second or more can be expected.
Research Organization:
Maryland Univ., College Park (USA)
DOE Contract Number:
AC05-76ER03491
OSTI ID:
6602288
Report Number(s):
DOE/ER/03491-T7; TR-70-110; ON: DE87006854
Country of Publication:
United States
Language:
English