Addressing the systematics in phase-imaging ion-cyclotron-resonance measurements at the Canadian Penning Trap mass spectrometer

18 Jul 2019, 11:30
Ball Room (McGill University)

Ball Room

McGill University

Thomson House 3650 McTavish Montreal, Quebec, H3A 1Y2 Canada


Dwaipayan Ray (University of Manitoba)


Phase-imaging ion-cyclotron-resonance (PI-ICR) is a novel technique for determining the cyclotron frequency ($\nu_{c}$) of an ion trapped in a Penning trap. First developed by the SHIPTRAP group at GSI [1], this technique relies on measuring the radial phase a trapped ion accumulates over a period of time. At the Canadian Penning Trap mass spectrometer (CPT) in Argonne National Laboratory (ANL), PI-ICR is currently employed [2,3]. The measurement campaigns and extensive tests over the last few years have revealed a number of systematics relating to the alignment between the magnetic field and ejection optics, the stability of the Penning trap electric field, and the initial magnetron motion of the ions [4]. These systematics and the efforts to address them will be presented.

This work is supported by Natural Sciences and Engineering Research Council (NSERC, Canada) under Application Number SAPPJ-2018-00028, U.S. Department of Energy (DOE), Office of Nuclear Physics under Contract Number DE-AC02-06CH11357(ANL), and Facility for Rare Isotope Beams - China Scholarship Council (FRIB-CSC) Fellowship under Grant Number 201704910964.

[1] S. Eliseev et al., Appl. Phys. B 114 (2014) 107.
[2] R. Orford, N. Vassh et al., Phys. Rev. Lett. 120 (2018) 262702.
[3] D.J. Hartley, F.G. Kondev, R. Orford et al., Phys. Rev. Lett. 120 (2018) 182502.
[4] R. Orford, PhD thesis, McGill University, Canada (2018).

Primary authors

Dwaipayan Ray (University of Manitoba) Dr Rodney Orford (McGill University, currently at Lawrence Berkeley National Laboratory) Dr Jason A. Clark (Argonne National Laboratory) Prof. Guy Savard (Argonne National Laboratory/University of Chicago) Prof. Kumar S. Sharma (University of Manitoba) Adrian Valverde (Argonne National Laboratory) Dr Xinliang Yan (Argonne National Laboratory) Dr Buchinger Fritz (McGill University)

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