Irradiation Investigations for TESLA and X-FEL experiments at.pdfVIP

Irradiation Investigations for TESLA and X-FEL experiments at DESY a a a a Dominik Konrad Rybka , Arkadiusz Kalicki , Krzysztof Pozniak , Ryszard Romaniuk , b c Bhaskar Mukherjee , Stefan Simrock aInstitute of Electronic Systems, Warsaw Univeristy of Technology bRadiation Protection Group, DESY cMachine RF Group for Proton Ring Accelerators, DESY ABSTRACT Electronic components during High Energy Physics experiments are exposed to high level of radiation. Radiation environment causes many problems to electronic devices. This report highlights the major hazards to electronics caused by radiation. Several experiments were done and results are included. Keywords: Irradiation, gamma, neutron, TESLA, X-FEL, LINAC II, DESY, FPGA, TLD, LED, CCD, CMOS 1. INTRODUCTION Two new projects TESLA (Tera Electon Volt Superconducting Linear Accelerator) and X-FEL (X-ray Free Elec- tron Laser) are being developed at the DESY (Deutsches Elektronen-Synchrotron) in Hamburg, Germany. These projects are unique because of idea to place control electronic systems in collider tunnel, near superconducting cavities. It may cause many problems in routine work of electronic devices, because of its exposure to a moderate dose of neutron and gamma radiation. The integrated flux of fast neutrons close to the cryomodule will be of the order of up to 1∗1012cm−2/20 years. The gamma dose rate close to the crymodule cannot exceed 10 rad / hour based on a maximum permitted additional cryo heatload o