Design and Performance of a Magnetic Bottle Electron Spectrometer for High-Energy Photoelectron Spectroscopy
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2024
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| author | Borne, Kurtis ONeal, Jordan T Wang, Jun Isele, Erk Obaid, Razib Berrah, Nora Cheng, Xinxin Bucksbaum, Philip H James, Justin Kamalov, Andri Larsen, Kirk A Li, Xiang Lin, Ming-Fu Liu, Yusong Marinelli, Agostino Summers, Adam Thierstein, Emily Wolf, Thomas Rolles, Daniel Walter, Peter Cryan, James P Driver, Taran |
| author_facet | Borne, Kurtis ONeal, Jordan T Wang, Jun Isele, Erk Obaid, Razib Berrah, Nora Cheng, Xinxin Bucksbaum, Philip H James, Justin Kamalov, Andri Larsen, Kirk A Li, Xiang Lin, Ming-Fu Liu, Yusong Marinelli, Agostino Summers, Adam Thierstein, Emily Wolf, Thomas Rolles, Daniel Walter, Peter Cryan, James P Driver, Taran |
| contents | We describe the design and performance of a magnetic bottle electron spectrometer~(MBES) for high-energy electron spectroscopy.
Our design features a ${\sim2}$~m long electron drift tube and electrostatic retardation lens, achieving sub-electronvolt (eV) electron kinetic energy resolution for high energy (several hundred eV) electrons with close to 4$π$ collection efficiency.
A segmented anode electron detector enables the simultaneous collection of photoelectron spectra in high resolution and high collection efficiency modes.
This versatile instrument is installed at the TMO endstation at the LCLS x-ray free-electron laser (XFEL).
In this paper, we demonstrate its high resolution, collection efficiency and spatial selectivity in measurements where it is coupled to an XFEL source.
These combined characteristics are designed to enable high-resolution time-resolved measurements using x-ray photoelectron, absorption, and Auger-Meitner spectroscopy.
We also describe the pervasive artifact in MBES time-of-flight spectra that arises from a periodic modulation in electron detection efficiency, and present a robust analysis procedure for its removal. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_13083 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Design and Performance of a Magnetic Bottle Electron Spectrometer for High-Energy Photoelectron Spectroscopy Borne, Kurtis ONeal, Jordan T Wang, Jun Isele, Erk Obaid, Razib Berrah, Nora Cheng, Xinxin Bucksbaum, Philip H James, Justin Kamalov, Andri Larsen, Kirk A Li, Xiang Lin, Ming-Fu Liu, Yusong Marinelli, Agostino Summers, Adam Thierstein, Emily Wolf, Thomas Rolles, Daniel Walter, Peter Cryan, James P Driver, Taran Instrumentation and Detectors We describe the design and performance of a magnetic bottle electron spectrometer~(MBES) for high-energy electron spectroscopy. Our design features a ${\sim2}$~m long electron drift tube and electrostatic retardation lens, achieving sub-electronvolt (eV) electron kinetic energy resolution for high energy (several hundred eV) electrons with close to 4$π$ collection efficiency. A segmented anode electron detector enables the simultaneous collection of photoelectron spectra in high resolution and high collection efficiency modes. This versatile instrument is installed at the TMO endstation at the LCLS x-ray free-electron laser (XFEL). In this paper, we demonstrate its high resolution, collection efficiency and spatial selectivity in measurements where it is coupled to an XFEL source. These combined characteristics are designed to enable high-resolution time-resolved measurements using x-ray photoelectron, absorption, and Auger-Meitner spectroscopy. We also describe the pervasive artifact in MBES time-of-flight spectra that arises from a periodic modulation in electron detection efficiency, and present a robust analysis procedure for its removal. |
| title | Design and Performance of a Magnetic Bottle Electron Spectrometer for High-Energy Photoelectron Spectroscopy |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2406.13083 |