Recirculating Linear Accelerator (RLA) injection experiments
Recirculating an electron beam in phase with a repeating accelerating-cavity voltage is a technique for producing a compact, high gradient, high current (> 10 kA), linear induction accelerator. We are conducting experiments on a racetrack configuration with an ion focus regime (IFR) electrostatic channel created by a 300-V, 800-mA e-beam guided with a 200-G magnetic field in low pressure (0.2 to 0.4 mTorr) argon gas. Two inherently low impedance, radial, dielectric cavities are being operated in a single-pass mode. The isolated Blumlein injector cavity produces a 2.0-MV, >10-kA, 25-ns duration electron beam, and the ET-2 accelerating cavity generates an approximately 1.5-MV repeating waveform to post-accelerate the beam on four passes. The immediate area of interest is how to efficiently couple the beam onto the IFR channel from the injector which is external to the racetrack. We summarize our recent attempts to use a wire zone coupling scheme and our initial evaluations of the injector geometry to produce a lower emittance electron beam that will aid in future coupling studies. This discussion also includes near-term experimental plans for transporting the injected beam to the IFR channel.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Science Applications International Corp., Albuquerque, NM (USA); Diversus, Inc., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5813382
- Report Number(s):
- SAND-87-2345C; CONF-8709146-21; ON: DE88000930
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
430302* -- Particle Accelerators-- Injection & Extraction Systems
ACCELERATORS
BEAM CURRENTS
BEAM EMITTANCE
BEAM INJECTION
BEAMS
CAVITY RESONATORS
CHANNELING
CURRENTS
ELECTRON BEAMS
ELECTRON CHANNELING
ELECTRONIC EQUIPMENT
EQUIPMENT
LEPTON BEAMS
LINEAR ACCELERATORS
PARTICLE BEAMS
RESONATORS