Abstract
Middle East Technical University – Defocusing Beam Line (METU-DBL) project is an irradiation facility providing 15 MeV to 30 MeV kinetic energy protons for testing various high radiation level applications, ranging from Hi-Lumi LHC upgrade, space electronic components to nuclear material research. The project located inside the premises of the TAEA (Turkish Atomic Energy Agency) SANAEM (Saraykoy Nuclear Education and Research Center) close to Ankara, provides users a wide selectable flux menu (105–1010 p/cm2/s). The facility is now being commissioned and the facility will be providing a large test area (20 cm x 15 cm) for material, detector and electronics tests. The proton beam is monitored along the beamline using aluminum oxide screens and the flux and uniformity is measured using three detectors attached to the robotic system for cross- checks. A fiber scintillator detector scans the large irradiation area while small area diamond detector and Timepix3 detector are used for spot checks for calibration. Several samples can be radiated simultaneously inside the irradiation area and the robotic system provides 5 separate holders for samples which can be moved in or out, providing users flexibility for the desired fluence. This talk will first introduce METU- DBL as a radiation test facility, then discuss the radiation monitoring of the beam area and the radiation room, while highlighting how this facility can be used for future testing of materials for radiation tolerance.
Highlights
Electronic devices are exposed to high dose radiation in the Hi-Lumi LHC [1] and space environment
In the scope of METU-DBL (Defocusing Beam Line) project, a beamline has been constructed at Turkish Atomic Energy Authority (TAEA)’s proton accelerator facility’s (PAF) R&D room
The schematic design of the proton accelerator facility is given in Fig. 1, where a central cyclotron provides proton beams to two simultaneous irradiation rooms
Summary
Electronic devices are exposed to high dose radiation in the Hi-Lumi LHC [1] and space environment. Beam optics studies of METU-DBL follow the ESA/ESCC No 25100 standard This subsystem consists of quadrupole magnets to enlarge the proton beam, collimators to reduce the proton flux and a beam screen to observe the beam profile. This subsystem is in charge of the management of the test table components (detectors as well as the devices under tests), the control of the adjustable conical collimator and a mobile radiation measurement robot These tasks are performed either autonomously or by user commands. These are necessary to measure the proton beam flux and the uniformity of METU-DBL target area.
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