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DOE OSTI · 2484270

Electron beam characterization via quantum coherent optical magnetometry

DeStefano, Nicolas [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000279324870)·Pegahan, Saeed [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000153440649)·Ramaswamy, Aneesh [Stevens Institute of Technology, Hoboken, NJ (United States)] (ORCID:0009000681882878)·Aubin, Seth [William & Mary, Williamsburg, VA (United States)] (ORCID:000000027154123X)·Averett, T. [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000204405836)·Camsonne, Alexandre [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)] (ORCID:0000000343332614)·Malinovskaya, Svetlana [Stevens Institute of Technology, Hoboken, NJ (United States)] (ORCID:0000000341253947)·Mikhailov, Eugeniy E. [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000155555183)·Park, Gunn [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)] (ORCID:0000000254442432)·Zhang, Shukui [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)] (ORCID:0000000278704628)·Novikova, Irina [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000184339092)
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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 μA. Our approach is insensitive to electron kinetic energy, and we confirmed that experimentally between 10 and 20 keV. In conclusion, 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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73 NUCLEAR PHYSICS AND RADIATION PHYSICSAccelerated beamsElectron beamsElectron kinetic energyFaraday cupLasersNuclear physicsPolarizationQuantum opticsQuantum stateTransition radiation

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DeStefano, Nicolas [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000279324870), Pegahan, Saeed [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000153440649), Ramaswamy, Aneesh [Stevens Institute of Technology, Hoboken, NJ (United States)] (ORCID:0009000681882878), Aubin, Seth [William & Mary, Williamsburg, VA (United States)] (ORCID:000000027154123X), Averett, T. [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000204405836), Camsonne, Alexandre [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)] (ORCID:0000000343332614), Malinovskaya, Svetlana [Stevens Institute of Technology, Hoboken, NJ (United States)] (ORCID:0000000341253947), Mikhailov, Eugeniy E. [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000155555183), Park, Gunn [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)] (ORCID:0000000254442432), Zhang, Shukui [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)] (ORCID:0000000278704628), Novikova, Irina [William & Mary, Williamsburg, VA (United States)] (ORCID:0000000184339092). 2024-12-23. Electron beam characterization via quantum coherent optical magnetometry. https://doi.org/10.1063/5.0234219

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