We report the manipulation of positron orbits in a toroidal dipole magnetic field configuration realized with electric fields generated by segmented electrodes. When the toroidal circulation motion of positrons in the dipole field is coupled with time-varying electric fields generated by azimuthally segmented outer electrodes, positrons undergo oscillations of their radial positions. This enables quick manipulation of the spatial profiles of positrons in a dipole field trap by choosing appropriate frequency, amplitude, phase, and gating time of the electric fields. According to numerical orbit analysis, we applied these electric fields to positrons injected from the NEPOMUC slow positron facility into a prototype dipole field trap experiment with a permanent magnet. Measurements with annihilation γ-rays clearly demonstrated the efficient compression effects of positrons into the strong magnetic field region of the dipole field configuration. This positron manipulation technique can be used as one of essential tools for future experiments on the formation of electron-positron plasmas.
Skip Nav Destination
,
,
,
,
,
,
,
,
,
,
,
Article navigation
23 January 2018
NON-NEUTRAL PLASMA PHYSICS X: 12th International Workshop on Non-Neutral Plasmas
10–13 July 2017
Appleton, Wisconsin, USA
Research Article|
January 23 2018
Manipulation of positron orbits in a dipole magnetic field with fluctuating electric fields Available to Purchase
H. Saitoh;
H. Saitoh
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
5
The University of Tokyo
, Kashiwa, Japan
Search for other works by this author on:
J. Horn-Stanja;
J. Horn-Stanja
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
Search for other works by this author on:
S. Nißl;
S. Nißl
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
Search for other works by this author on:
E. V. Stenson;
E. V. Stenson
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
Search for other works by this author on:
U. Hergenhahn;
U. Hergenhahn
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
6
Leibniz Institute of Surface Modification
, Leipzig, Germany
Search for other works by this author on:
T. Sunn Pedersen;
T. Sunn Pedersen
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
7
Ernst Moritz Arndt Universität
, Greifswald, Germany
Search for other works by this author on:
M. Singer;
M. Singer
2
Technische Universität München
, Garching, Germany
Search for other works by this author on:
M. Dickmann;
M. Dickmann
2
Technische Universität München
, Garching, Germany
Search for other works by this author on:
C. Hugenschmidt;
C. Hugenschmidt
2
Technische Universität München
, Garching, Germany
Search for other works by this author on:
M. R. Stoneking;
M. R. Stoneking
3
Department of Physics, Lawrence University
, Appleton, USA
Search for other works by this author on:
J. R. Danielson;
J. R. Danielson
4
University of California
, San Diego, USA
Search for other works by this author on:
C. M. Surko
C. M. Surko
4
University of California
, San Diego, USA
Search for other works by this author on:
H. Saitoh
1,5
J. Horn-Stanja
1
S. Nißl
1
E. V. Stenson
1
U. Hergenhahn
1,6
T. Sunn Pedersen
1,7
M. Singer
2
M. Dickmann
2
C. Hugenschmidt
2
M. R. Stoneking
3
J. R. Danielson
4
C. M. Surko
4
1
Max Planck Institute for Plasma Physics, Greifswald and Garching
, Germany
5
The University of Tokyo
, Kashiwa, Japan
6
Leibniz Institute of Surface Modification
, Leipzig, Germany
7
Ernst Moritz Arndt Universität
, Greifswald, Germany
2
Technische Universität München
, Garching, Germany
3
Department of Physics, Lawrence University
, Appleton, USA
4
University of California
, San Diego, USA
AIP Conf. Proc. 1928, 020013 (2018)
Citation
H. Saitoh, J. Horn-Stanja, S. Nißl, E. V. Stenson, U. Hergenhahn, T. Sunn Pedersen, M. Singer, M. Dickmann, C. Hugenschmidt, M. R. Stoneking, J. R. Danielson, C. M. Surko; Manipulation of positron orbits in a dipole magnetic field with fluctuating electric fields. AIP Conf. Proc. 23 January 2018; 1928 (1): 020013. https://doi.org/10.1063/1.5021578
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Effect of coupling agent type on the self-cleaning and anti-reflective behaviour of advance nanocoating for PV panels application
Taha Tareq Mohammed, Hadia Kadhim Judran, et al.
Design of a 100 MW solar power plant on wetland in Bangladesh
Apu Kowsar, Sumon Chandra Debnath, et al.
With synthetic data towards part recognition generalized beyond the training instances
Paul Koch, Marian Schlüter, et al.
Related Content
Progress of the APEX experiment for creation of an electron-positron pair plasma
AIP Conf. Proc. (January 2018)
Performance of the (n,γ)‐Based Positron Beam Facility NEPOMUC
AIP Conf. Proc. (January 2009)
Novel time-of-flight spectrometer for the analysis of positron annihilation induced Auger electrons
Rev. Sci. Instrum. (October 2006)
Novel pulsed particle accelerator for energy dependent positron re-emission experiments
Rev. Sci. Instrum. (May 2016)
Positron orbit effects during injection and confinement in a magnetic dipole trap
Phys. Plasmas (May 2020)