Sector 30 collimator radiation

Technical Report · Thu Feb 22 00:00:00 EST 1990

DOI:https://doi.org/10.2172/7247881· OSTI ID:7247881

Namito, Y ^[1]; Nelson, W R; Benson, E

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1. Ship Research Inst., Tokyo (Japan)

The collimators at Sector 30 of the SLAC accelerator are designed to scrape off a significant fraction (e.g., {approximately}20%) of the SLC beam. The electromagnetic cascade shower that develops in the collimator, and in the scraper and waveguide downbeam, leads to very high radiation exposures of TV cameras (and other devices) located nearby. The collimator (point) source accounts for one-third of the dose and is best shielded by extending the radius of the copper scraper. Radiation from the waveguide accounts for the remaining two-thirds of the dose, and is difficult to shield since it is a line source. However, the spectrum from the waveguide is expected to be softer than that from the collimator. This paper discusses shielding of these sources.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 7247881
• Report Number(s): SLAC-CN-374; ON: DE90008768; TRN: 90-008842
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ELECTROMAGNETIC RADIATION
SHIELDING
COLLIMATORS
DOSE RATES
PHYSICAL RADIATION EFFECTS
STANFORD LINEAR COLLIDER
TELEVISION CAMERAS
WAVEGUIDES
ACCELERATOR FACILITIES
ACCELERATORS
CAMERAS
LINEAR ACCELERATORS
RADIATION EFFECTS
RADIATIONS
430303* - Particle Accelerators- Experimental Facilities & Equipment
654001 - Radiation & Shielding Physics- Radiation Physics
Shielding Calculations & Experiments