Speaker
Doris Forkel-Wirth
(CERN-SC)
Description
From 2006 onwards the total number of protons per year accelerated by the
SPS machine and provided to its fixed target program, CNGS and LHC will
exceed by far all what has been achieved in the past. The consequences with
respect to radiation protection issues will become serious. Additional thick
shielding will be required in the caverns of SPS Point 4 and Point 5 if ECA4
and ECA5 shall remain accessible during beam operation. The total number
of protons on the beam dumps in BA1 will be limited by the effective dose
received by members of the public via the emission of gaseous radioactivity
from TT10. Either AB’s operation group will strictly respect a pre-defined
quota of protons on the SPS beam dumps or the displacement of the dumps
to a more favourable location will be required. The radiation dose rates during
shut-downs will be strongly increased when compared to previous years. The
dose to the maintenance personnel will be high if no corrective measures will
be applied like the use of remote handling devices or of radiation hard
material. Job and dose planning will become anyhow obligatory. Last but not
least, the number of protons accelerated by the SPS shall be justified.
Author
Doris Forkel-Wirth
(CERN-SC)
