National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
The neutron flux characterization on the microtron MT25
Chvátil, David ; Králik, M. ; Granja, C. ; Krist, Pavel
Microtron is a small cyclic electron accelerator. When it is used as a source of neutrons, electrons must be converted to neutrons by means of nuclear reactions. Spectra of neutrons produced by high energy X-ray photons in lead and uranium targets installed on the microtron MT25 were measured by the Bonner sphere spectrometer with passive detectors of thermal neutrons. Neutron yield from uranium target was nearly two times higher than from the lead one.
Control Problems of Classical Type of Microtron and Application of Fuzzy Logic Controller
Krist, Pavel ; Bíla, J.
This work deals with control problems of the classical microtron with Kapitza type of the accelerating cavity. Fuzzy controller is used. The main problem, which led to use this type of controller, is a problematical measurement of the radio-frequency electric field inside accelerating cavity. Careful setting of this electric field is necessary for accelerating condition fulfillment.
Computing of MT 25 Microtron Dynamic Behavior and Fast Simulation
Krist, Pavel ; Bíla, J. ; Chvátil, David
This paper presents the design of a mathematical model and its fast simulation developed for the setup of the control system of the MT 25 microtron, which is a cyclic electron accelerator. This type of accelerator has been controlled manually until now. The mathematical model is based on calculations of the electron motion in the accelerating cavity and vacuum chamber. The simulation diagram was created in Matlab – Simulink.

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