Automatic Frequency Control System for a Microwave Linear Electron Accelerator

Journal Article · Fri Jun 01 00:00:00 EDT 1962 · Rev. Sci. Instr.

DOI:https://doi.org/10.1063/1.1746635· OSTI ID:4820462

Karzmark, C J

In the operation of microwave electron linear accelerators, adjustment of the frequency-determining element of the power source is frequently required to optimize performance. These adjustments are necessitated by thermal-mechanical changes of the accelerator structure proper as well as independent changes of the oscillator frequency. An automatic frequency control system was designed to maximize the x-ray output for an S-band accelerator used in radiation therapy. Frequency modulation of the oscillator produces a phase sensitive amplitude modulation component in the x-ray output. This information is used with a suitable detector and servo system to effect frequency corrections.

• Research Organization: Stanford Medical Center, Palo Alto, Calif.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-023952
• OSTI ID: 4820462
• Journal Information: Rev. Sci. Instr., Journal Name: Rev. Sci. Instr. Vol. Vol: 33
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CONTROL SYSTEMS
ELECTRONS
ENGINEERING AND EQUIPMENT
FREQUENCY
LINEAR ACCELERATORS
MICROWAVES
OSCILLATIONS
RADIOTHERAPY
SERVOMECHANISMS
SIGNALS
X RADIATION