Photon Science Directions in Poland at the Large Scale Accelerator’s Based Infrastructures
J. Szlachetko, A.I. Wawrzyniak
NSRC SOLARIS, Kraków, Poland
R. Nietubyc
NCBJ, Świerk/Otwock, Poland
Polish scientific society, for many decades, has been actively participating in research exploring synchrotrons and free-electron lasers facilities worldwide. Recently, the construction of the SOLARIS National Synchrotron Radiation Centre in Kraków was completed. SOLARIS belongs to the family of low energy synchrotrons with a 1.5 GeV storage ring and presently offers several beamlines for user operation. In parallel, the PolFEL free-electron laser facility at National Centre for Nuclear Research in Warsaw is under construction, and the facility will deliver the first photon beams in 2023. We will present areas of accelerator-based photon research where the Polish scientific community is active and discuss trends and research routes of interest to be implemented at SOLARIS and PolFEL facilities.
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R. Nietubyc, P. Krawczyk
NCBJ, Świerk/Otwock, Poland
PolFEL - Polish Free Electron Laser will be driven by a continuous wave superconducting accelerator consisting of low emittance superconducting RF electron gun, four accelerating cryomodules, bunch compressors, beam optics components and diagnostic elements. The accelerator will split in three branches leading to undulators producing VUV, IR and THz radiation, respectively. Two accelerating cryomodules will be installed before a dogleg directing electron bunches towards IR and THz branches. Additional two cryomodules will be placed in the VUV branch accelerating electron bunches up to 185 MeV at 50 kHz repetition rate. Moreover, the electron beam after passing the VUV undulator will be directed to the Inverse Compton Scattering process for high energy photons experiments in a dedicated station. In order to measure and optimise the electron beam parameters along the entire accelerator the main diagnostics components like BPMs, charge monitors, YAG screens, coherent diffraction radiation (CDR) monitors and beam loss monitors are foreseen. Within this presentation the concept of the electron beam diagnostics will be discussed.
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Beam Loss Monitor for Polish Free Electron Laser (PolFEL): Design and Tests
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R. Kwiatkowski, R. Nietubyc, J. Szewiński, D.R. Zaloga
NCBJ, Świerk/Otwock, Poland
A.I. Wawrzyniak
NSRC SOLARIS, Kraków, Poland
Funding:European Regional Development Fund in the framework of the Smart Growth Operational Programme and Regional Operational Programme for Mazowieckie Voivodeship. The Beam Loss Monitor (BLM) system is primarily used for machine protection and is especially important in the case of high energy density of accelerated beam, when such a beam could cause serious damages due to uncontrolled loss. PolFEL linear accelerator is designed with the beam parameters, which made BLM an essential system for machine protection. The design of BLM system for PolFEL is composed of several scintillation probes placed along and around the accelerator. The paper reports on design and first tests of prototype detector, which is planned to be used for PolFEL project. The prototype was tested in NCBJ and SOLARIS, using radioactive calibration samples and linear electron accelerator as a sources. We also present results of numerical investigation of radiation generated due to interaction of fast electrons with accelerator components.
