Development of accelerator mass spectrometer based on a compact cyclotron

作者：Kim J W^*; Kim D G

来源：Journal of Instrumentation, 2011, 6: T07001.

DOI：10.1088/1748-0221/6/07/T07001

• Accelerator Applications
• Acceleration cavities and magnets superconducting (high-temperature superconductor
• radiation hardened magnets
• normal-conducting
• permanent magnet devices
• wigglers and undulators)
• Heavy-ion detectors
• Accelerator mass spectroscopy (AMS)

A small cyclotron has been designed for accelerator mass spectrometry, and the injection beam line is constructed as part of prototyping. Mass resolution of the cyclotron is estimated to be around 4000. The design of the cyclotron was performed with orbit-tracking computations using 3D magnetic and electric fields, and beam optics of the injection line was calculated using the codes such as IGUN and TRANSPORT. The radial injection scheme is chosen to place a beam on equilibrium orbit of the cyclotron. The injection line includes an ion source, Einzel lens, rf buncher, 90 degrees dipole magnet, and quadrupole triplet magnet. A carbon beam was extracted from the front part of the injection line. An rf cavity system for the cyclotron was built and tested. A multi channel plates (MCP) detector to measure low-current ion beams was also tested. Design considerations are given to analyzing a few different radioisotopes in form of positive ions as well as negative ions.

• 出版日期2011-7