Electron beam characterization via quantum coherent optical magnetometry

Nicolas DeStefano; Saeed Pegahan; Aneesh Ramaswamy; Seth Aubin; T. Averett; Alexandre Camsonne; Svetlana Malinovskaya; Eugeniy E. Mikhailov; Gunn Park; Shukui Zhang; Irina Novikova

doi:10.1063/5.0234219

Electron beam characterization via quantum coherent optical magnetometry

Nicolas DeStefano
, Saeed Pegahan
, Aneesh Ramaswamy
, Seth Aubin
, T. Averett
, Alexandre Camsonne
, Svetlana Malinovskaya
, Eugeniy E. Mikhailov
, Gunn Park
, Shukui Zhang
, Irina Novikova

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We present a quantum optics-based detection method for determining the position and current of an electron beam. As electrons pass through a dilute vapor of rubidium atoms, their magnetic field perturbs the atomic spin's quantum state and causes polarization rotation of a laser resonant with an optical transition of the atoms. By measuring the polarization rotation angle across the laser beam, we recreate a 2D projection of the magnetic field and use it to determine the e-beam position, size, and total current. We tested this method for an e-beam with currents ranging from 30 to 110 μ A. Our approach is insensitive to electron kinetic energy, and we confirmed that experimentally between 10 and 20 keV. This technique offers a unique platform for noninvasive characterization of charged particle beams used in accelerators for particle and nuclear physics research.

Original language	English
Article number	264001
Journal	Applied Physics Letters
Volume	125
Issue number	26
DOIs	https://doi.org/10.1063/5.0234219
State	Published - Dec 23 2024
Externally published	Yes

Funding

This work is supported by U.S. DOE Contract No. DE-AC05-06OR23177, NSF Award No. 2326736, and Jefferson Lab LDRD program. The collaboration thanks Jiahui Li and Cutter Fugett for their assistance in the early stages of the project.

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10.1063/5.0234219

Cite this

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title = "Electron beam characterization via quantum coherent optical magnetometry",

abstract = "We present a quantum optics-based detection method for determining the position and current of an electron beam. As electrons pass through a dilute vapor of rubidium atoms, their magnetic field perturbs the atomic spin's quantum state and causes polarization rotation of a laser resonant with an optical transition of the atoms. By measuring the polarization rotation angle across the laser beam, we recreate a 2D projection of the magnetic field and use it to determine the e-beam position, size, and total current. We tested this method for an e-beam with currents ranging from 30 to 110 μ A. Our approach is insensitive to electron kinetic energy, and we confirmed that experimentally between 10 and 20 keV. This technique offers a unique platform for noninvasive characterization of charged particle beams used in accelerators for particle and nuclear physics research.",

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T1 - Electron beam characterization via quantum coherent optical magnetometry

AU - DeStefano, Nicolas

AU - Pegahan, Saeed

AU - Ramaswamy, Aneesh

AU - Aubin, Seth

AU - Averett, T.

AU - Camsonne, Alexandre

AU - Malinovskaya, Svetlana

AU - Mikhailov, Eugeniy E.

AU - Park, Gunn

AU - Zhang, Shukui

AU - Novikova, Irina

PY - 2024/12/23

Y1 - 2024/12/23

N2 - We present a quantum optics-based detection method for determining the position and current of an electron beam. As electrons pass through a dilute vapor of rubidium atoms, their magnetic field perturbs the atomic spin's quantum state and causes polarization rotation of a laser resonant with an optical transition of the atoms. By measuring the polarization rotation angle across the laser beam, we recreate a 2D projection of the magnetic field and use it to determine the e-beam position, size, and total current. We tested this method for an e-beam with currents ranging from 30 to 110 μ A. Our approach is insensitive to electron kinetic energy, and we confirmed that experimentally between 10 and 20 keV. This technique offers a unique platform for noninvasive characterization of charged particle beams used in accelerators for particle and nuclear physics research.

AB - We present a quantum optics-based detection method for determining the position and current of an electron beam. As electrons pass through a dilute vapor of rubidium atoms, their magnetic field perturbs the atomic spin's quantum state and causes polarization rotation of a laser resonant with an optical transition of the atoms. By measuring the polarization rotation angle across the laser beam, we recreate a 2D projection of the magnetic field and use it to determine the e-beam position, size, and total current. We tested this method for an e-beam with currents ranging from 30 to 110 μ A. Our approach is insensitive to electron kinetic energy, and we confirmed that experimentally between 10 and 20 keV. This technique offers a unique platform for noninvasive characterization of charged particle beams used in accelerators for particle and nuclear physics research.

UR - https://www.scopus.com/pages/publications/85213043087

U2 - 10.1063/5.0234219

DO - 10.1063/5.0234219

M3 - Article

AN - SCOPUS:85213043087

SN - 0003-6951

VL - 125

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

M1 - 264001

ER -

Electron beam characterization via quantum coherent optical magnetometry

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