Development of lame screen monitor for transverse beam size measurement of high current linac in Ukraine

In NSC KIPT (National Science Center, Kharkov Institute of Physics and Technology, Ukraine), a 100 MeV/100 kW electron linear accelerator has been developed. In order to ensure the performance of electron beam, two sets of transverse beam size monitor are installed in the injector segment and the transport line respectively. Due to the kilowatt level of the beam power, it is very difficult to find suitable materials for the beam-touching monitor. This paper introduced the simulation on the interaction between lames and beam with ANSYS, and the results of the vacuum temperature and deformation of lames were gotten. An initial beam experiment was done, and the output signals from the T300 carbon fiber bundles were measured under the test beam condition. The T300 carbon fiber bundle was chosen as the electrode material of the lame screen monitor. The mechanical design and signal processing system are very complex and dozens of signals were exported through the active vacuum components of the LSM.