Coherent sychrotron radiation detector for a non-invasive subpicosecond bunch length monitor

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:283611

Krafft, G A; Wang, D; Price, E; Feldl, E ^[1]; Porterfield, D; Wood, P; Crowe, T ^[2]

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1. Continuous Electron Beam Accelerator Facility, Newport News, VA (United States)
2. Virginia Univ., Charlottesville, VA (United States)

This CSR detector was developed to monitor nondestructively the length of a subpicosecond bunch with high sensitivity. The monitor uses a state of the art GaAs Schottky whisker diode which is operated at room temperature at a wavelength of a few hundred microns. The detector is capable of detecting radiation power as low as 10 nW, depending on wavelength. This paper describes design specifications, parameter ranges, and monitor features and also reports its performance and comparison between measurement and calculation. The measurement results are cross-compared with an independent bunch length measurement using phase modulation. It was found that the output power varies with bunch length and that detectors at shorter wavelengths are preferred.

• Research Organization: Continuous Electron Beam Accelerator Facility, Newport News, VA (United States); Virginia Univ., Charlottesville, VA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 283611
• Report Number(s): DOE/ER/40150--365; CEBAF-PR--95-047; CONF-950512--401; ON: DE96013326
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM INJECTION
BEAM MONITORS
CEBAF ACCELERATOR
COHERENT RADIATION
SCHOTTKY BARRIER DIODES
SYNCHROTRON RADIATION