Status and outlook of CHIP-TRAP: The Central Michigan University high precision Penning trap

M. Redshaw, R. A. Bryce, P. Hawks, N. D. Gamage, C. Hunt, R. M.E.B. Kandegedara, I. S. Ratnayake, L. Sharp

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


At Central Michigan University we are developing a high-precision Penning trap mass spectrometer (CHIP-TRAP) that will focus on measurements with long-lived radioactive isotopes. CHIP-TRAP will consist of a pair of hyperbolic precision-measurement Penning traps, and a cylindrical capture/filter trap in a 12 T magnetic field. Ions will be produced by external ion sources, including a laser ablation source, and transported to the capture trap at low energies enabling ions of a given m/q ratio to be selected via their time-of-flight. In the capture trap, contaminant ions will be removed with a mass-selective rf dipole excitation and the ion of interest will be transported to the measurement traps. A phase-sensitive image charge detection technique will be used for simultaneous cyclotron frequency measurements on single ions in the two precision traps, resulting in a reduction in statistical uncertainty due to magnetic field fluctuations.

Original languageEnglish
Pages (from-to)302-306
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
StatePublished - Jun 1 2016


  • Carbon clusters
  • Ion source
  • Laser ablation
  • Mass measurements
  • Penning trap


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