[SLAC] [SLAC Pubs and Reports]
SLAC-PUB-8085
Environmental Impact from Accelerator Operation at SLAC
Abstract
Environmental impacts from electron accelerator operations at the
Stanford Linear Accelerator Center, which is located near populated
areas, are illustrated by using examples of three different
accelerator facilities: the low power (a few watts) SSRL, the high
power (a few kilowatts) PEP-II, and the 50-kW SLC. Three types of
major impacts are discussed: 1) off-site doses from skyshine
radiation, mainly neutrons, 2) off-site doses from radioactive air
emission, mainly 13N, and 3) radioactivities, mainly
3H, produced in the groundwater. It was found that, from
SSRL operation, the skyshine radiation result in a MEI (Maximum
Exposed Individual) of 0.3 mu Sv/y while a conservative calculation
using CAP88 showed a MEI of 0.36 mu Sv/y from radioactive air
releases. The calculated MEI doses due to future PEP-II operation are
30 mu Sv/y from skyshine radiation and 2 mu Sv/y from air releases. The
population doses due to radioactive air emission are 0.5 person-mSv
from SSRL and 12 person-mSv from PEP-II. Because of the stronger
decrease of skyshine dose as the distance increases, the population
dose from skyshine radiation are smaller than that from air
release. The third environmental impact, tritium activity produced in
the groundwater, was also demonstrated to be acceptable from both the
well water measurements and the FLUKA calculations for the worst case
of the SLC high-power dump.
Full Text
PDF
Compressed PostScript
More Information
Full bibliographic data for this document, including its complete author list,
is (or soon will be) available from SLAC's
SPIRES-HEP
Database.
Please report problems with this file to
posting@slac.stanford.edu.
The SLAC preprint inventory is provided by the
SLAC Technical Publications Department.
Page generated 04 Apr 2001 @ 15:05 PDT by htmlme.pl