| Article | |
| Report number | arXiv:1812.06736 |
| Title | A hydrogen beam to characterize the ASACUSA antihydrogen hyperfine spectrometer |
| Author(s) |
Malbrunot, C. (CERN ; Stefan Meyer Inst. Subatomare Phys.) ; Diermaier, M. (Stefan Meyer Inst. Subatomare Phys.) ; Simon, M.C. (Stefan Meyer Inst. Subatomare Phys.) ; Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Arguedas Cuendis, S. (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H. (Wako, RIKEN) ; Evans, C. (Brescia U. ; INFN, Pavia) ; Fleck, M. (Stefan Meyer Inst. Subatomare Phys.) ; Kolbinger, B. (Stefan Meyer Inst. Subatomare Phys.) ; Lanz, A. (Stefan Meyer Inst. Subatomare Phys.) ; Leali, M. (Brescia U. ; INFN, Pavia) ; Maeckel, V. (Wako, RIKEN) ; Mascagna, V. (INFN, Pavia ; U. Brescia) ; Massiczek, O. (Stefan Meyer Inst. Subatomare Phys.) ; Matsuda, Y. (Tokyo U., Komaba) ; Nagata, Y. (Tokyo U. of Sci.) ; Sauerzopf, C. (Stefan Meyer Inst. Subatomare Phys.) ; Venturelli, L. (Brescia U. ; INFN, Pavia) ; Widmann, E. (Stefan Meyer Inst. Subatomare Phys.) ; Wiesinger, M. (Stefan Meyer Inst. Subatomare Phys.) ; Yamazaki, Y. (Wako, RIKEN) ; Zmeskal, J. (Stefan Meyer Inst. Subatomare Phys.) |
| Publication | 2019-08-11 |
| Imprint | 2018-12-17 |
| Number of pages | 11 |
| In: | Nucl. Instrum. Meth. A 935 (2019) 110-120 |
| DOI | 10.1016/j.nima.2019.04.060 |
| Subject category | physics.atom-ph ; Other Fields of Physics |
| Accelerator/Facility, Experiment | CERN ASACUSA |
| Abstract | The antihydrogen programme of the ASACUSA collaboration at the antiproton decelerator of CERN focuses on Rabi-type measurements of the ground-state hyperfine splitting of antihydrogen for a test of the combined Charge-Parity-Time symmetry. The spectroscopy apparatus consists of a microwave cavity to drive hyperfine transitions and a superconducting sextupole magnet for quantum state analysis via Stern-Gerlach separation. However, the small production rates of antihydrogen forestall comprehensive performance studies on the spectroscopy apparatus. For this purpose a hydrogen source and detector have been developed which in conjunction with ASACUSA's hyperfine spectroscopy equipment form a complete Rabi experiment. We report on the formation of a cooled, polarized, and time modulated beam of atomic hydrogen and its detection using a quadrupole mass spectrometer and a lock-in amplification scheme. In addition key features of ASACUSA's hyperfine spectroscopy apparatus are discussed.t |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2019 The Authors (License: CC-BY-4.0) |
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