shielding of a accelerator facility

[CCONTE@correu.gencat.es]

Hello,

Does anybody know of any problem in having a 18MV accelerator for
radiotherapy treatments in a bunker (shielded room) whose walls are
made of lead + concrete?. That is, neutrons get first to the lead shield
and then to the concrete, and not the other way round, which is most
common among shielded bunker doors (in fact neutrons and fotons get
first to a paraffin layer and then to the lead).

Thanks in advance.

Carmen Conte
cconte@correu.gencat.es
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