RLA (Recirculating Linear Accelerator) accelerating cavity improvements
In the Recirculating Linear Accelerator, we will inject a 10-kA to 20-kA electron beam, and then focus and guide it with an IFR plasma channel, which is created with a low energy electron beam. The REB will be transported through a closed racetrack or a spiral beam line to be re-accelerated by the ringing waveform of dielectric cavities. By adding more accelerating cavities along the beam line, high energies can be achieved. Experiments are in progress to study IFR beam transport issues. A new injector is needed for beam re- acceleration experiments. We are presently installing this new REB injector which will-provide a higher amplitude ({approximately}4 MV), longer duration ({approximately}40-ns FWHM), more rectangularly shaped({approximately}25-ns full width at 90% peak) waveform and a colder beam than were achievable with the previous 1.5-MV injector. The resultant constant beam energy can be more efficiently matched the guiding IFR plasma channel in the beam line and to the turning section magnetic fields. We are now developing new cavities that produce accelerating voltage pulses with improved waveform flatness, width, and amplitudes that do not suffer unacceptable degradation over the first four ringing periods. This effort requires network solver and electrostatic field stress analysis computer codes, and a scaled test model to compare actual waveforms to those predicted by the simulations. 10 refs., 9 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- Sponsoring Organization:
- DOD; DOE/DP
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6750725
- Report Number(s):
- SAND-90-1938C; CONF-9006228--1; ON: DE90014567
- Country of Publication:
- United States
- Language:
- English
Similar Records
Recirculating Linear Accelerator (RLA) injection experiments
Pulsed power performance of the new RLA (Recirculating Linear Accelerator)
Related Subjects
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATORS
BEAM INJECTION
BEAM TRANSPORT
BEAMS
CAVITY RESONATORS
DESIGN
ELECTRIC IMPEDANCE
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
IMPEDANCE
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNETIC FIELDS
MODIFICATIONS
PARTICLE BEAMS
RESONATORS