Physics – Accelerator Physics
Scientific paper
2000-04-25
Nucl.Instrum.Meth.A458:710-719,2001
Physics
Accelerator Physics
14 pages (Latex), 13 figures (Postscript), submitted to Nuclear Instruments and Methods A
Scientific paper
10.1016/S0168-9002(00)00898-6
Test measurements on the silicon pixel detector for the beam trajectory monitor at the free electron laser of the TESLA test facility are presented. To determine the electronic noise of detector and read-out and to calibrate the signal amplitude of different pixels the 6 keV photons of the manganese K line are used. Two different methods determine the spatial accuracy of the detector: In one setup a laser beam is focused to a straight line and moved across the pixel structure. In the other the detector is scanned using a low-intensity electron beam of an electron microscope. Both methods show that the symmetry axis of the detector defines a straight line within 0.4 microns. The sensitivity of the detector to low energy X-rays is measured using a vacuum ultraviolet beam at the synchrotron light source HASYLAB. Additionally, the electron microscope is used to study the radiation hardness of the detector.
Hansen Klavs
Hillert Sonja
Holl Peter
Ischebeck R.
Karstensen S.
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