Modeling the APLE injector solenoid magnetic field with the Biot-Savart Law
- Los Alamos National Lab., NM (United States)
- Boeing Aerospace and Electronics Co., Seattle, WA (United States)
The APLE (Average Power Laser Experiment) photoinjector accelerates electrons to 5 MeV with four cavities. A solenoid placed between the first two cavities focuses the low energy (1.2 MeV) electron beam. The beam transport and the beam quality of the injector depend on the detailed field profile of the solenoid. To describe the solenoid magnetic field accurately, we integrate the fields from each section of the solenoid using the Biot-Savart's Law. This integration can produce an accurate model of the solenoid field installed in the APLE injector. The solenoid consists of three layers with a shared axis. Each layer is connected by spirals, and the ends are terminated with the leads. We evaluate the magnetic field from each component of solenoid and study the asymmetric transverse field along the beam axis that was observed in the experiment. We determine the angle of the solenoid axis by a best match of transverse field components measured on the beam axis z.The Biot-Savart algorithm is implemented in the particle simulation code PARMELA, and the injector optimization was performed.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- DOD; Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6855659
- Report Number(s):
- LA-UR-92-3231; CONF-9208142--15; ON: DE93003695
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
426002* -- Engineering-- Lasers & Masers-- (1990-)
43 PARTICLE ACCELERATORS
430200 -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ALGORITHMS
BEAM EMITTANCE
BEAM INJECTION
BIOT-SAVART LAW
COMPUTER CODES
CONFIGURATION
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRON BEAM INJECTION
EQUIPMENT
FREE ELECTRON LASERS
HELICAL CONFIGURATION
LASERS
MAGNETIC FIELDS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
P CODES
SOLENOIDS