Speaker
Alexey Mykhailenko
(Kiev Inst. of Nucl. Research)
Description
The Metal Microstrip Detector (MMD) is presented. The MMD is designed and
used for on-line profile monitoring of synchrotron radiation beams. The
results obtained at HASYLAB (DESY) with 20 keV synchrotron radiation are
discussed. The principle of its operation is based on the Secondary Electron
Emission (SEE): X-ray photons (or fast charged particles) hitting a narrow
(20-35 μm) metal strip with thickness 1-2 μm initiate SEE. Consequently
generated positive charge in the strip is integrated by high sensitive Charge
Integrator (CI), forming output signal proportional to the energy and
intensity of the initial beam. Such signals are collected from 32 equal strips,
processed by software representing current beam profile on PC. Also MMD
can be used for profiling of charged particles beams. The main advantages of
MMD are: extremely low mass of detecting material, very high radiation
tolerance (at gigarads level) and good position resolution (20 μm now and
smaller by order in the nearest future).
Author
Alexey Mykhailenko
(Kiev Inst. of Nucl. Research)
