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Title: The LBL (Lawrence Berkeley Laboratory) multiple beam experiments

Conference ·
OSTI ID:6778816

The multiple-beam induction linac approach to a heavy ion driver for inertial confinement, fusion features continuous current amplification along the accelerator and a minimum of beam manipulations from source to pellet. Current amplification and bunch length control require careful shaping of the accelerating voltages. MBE-4 is designed as a four-beam induction linac that models much of the accelerator physics of the electrostatically focused section of a significantly longer induction accelerator. Four space-charge-dominated Cs/sup +/ beams, initially about one meter in length at a current of 13 mA, are focused by electrostatic quadrupoles and accelerated in parallel from 200 to nearly 600 keV. The energy will reach approximately one MeV when the accelerator is complete. Experiments have proceeded in parallel with the construction of the apparatus which began in FY 85 and is now more than half complete. The results show a current amplification, so far, by a factor of 2.8 in good agreement with the longitudinal acceleration calculations.

Research Organization:
Lawrence Berkeley Lab., CA (USA)
DOE Contract Number:
AC03-76SF00098
OSTI ID:
6778816
Report Number(s):
LBL-22217; CONF-870302-140; ON: DE87009165
Resource Relation:
Conference: Particle accelerator conference, Washington, DC, USA, 16 Mar 1987; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English