Speaker
Bhaskar Mukherjee
(DESY)
Description
In April 2006, the Free Electron Laser (FEL) generating 13 nm laser light
with a high brilliance started its routine operation at DESY. The FEL facility is
named FLASH (Free Electron Laser in Hamburg), driven by a 145 m long, 1
GeV superconducting electron linac. A myriad of state-of-the-art electronic
devices comprised of microelctronic components, which are susceptible
ionising radiations have been installed in the close proximity of the FLASH
linac, producing a significant level of parasitic radiations during its routine
operation. We have evaluated the gamma and neutron doses along the
entire length of the linac at different operating conditions using radiochromic
films and superheated emulsion (bubble) detector respectively. This report
highlights the methods and results of in-situ dosimetry of neutron/gamma
mixed radiation fields produced by 1 GeV superconducting electron linac
driving the FLASH.
Author
Bhaskar Mukherjee
(DESY)
