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Progress of antihydrogen beam production using a double cusp trap
/ Nagata, Y (Tokyo U. of Agric. Tech. ; Wako, RIKEN) ; Kuroda, N (U. Tokyo (main)) ; Dupre, P (Wako, RIKEN) ; Radics, B (Wako, RIKEN) ; Tajima, M (U. Tokyo (main) ; Wako, RIKEN) ; Capon, A A (Stefan Meyer Inst. Subatomare Phys.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Kaga, C (ADSM, Hiroshima) ; Kolbinger, B (Stefan Meyer Inst. Subatomare Phys.) ; Leali, M (INFN, Brescia ; Brescia U.) et al.
We report the progress of the $\bar{\text{H}}$ beam production experiment and recent developments of the double cusp trap to improve of the beam intensity of the $\bar{\text{H}}$ atomic beams, the ASACUSA Micromegas tracker to monitoring the antihydrogen synthesis and the antihydrogen beam detector..
2017 - 10 p.
- Published in : JPS Conf. Proc. 18 (2017) 011007
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011007
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The development of the antihydrogen beam detector: Toward the three dimensional tracking with a BGO crystal and a hodoscope
/ Nagata, Y (Tokyo U. of Agric. Tech. ; Wako, RIKEN) ; Kuroda, N (Tokyo, U. Earth Sci. Astron.) ; Sauerzopf, C (Stefan Meyer Inst. Subatomare Phys.) ; Kolbinger, B (Stefan Meyer Inst. Subatomare Phys.) ; Malbrunot, C (CERN ; Stefan Meyer Inst. Subatomare Phys.) ; Capon, A A (Stefan Meyer Inst. Subatomare Phys.) ; Dupre, P (Wako, RIKEN) ; Radics, B (Wako, RIKEN) ; Tajima, M (Tokyo, U. Earth Sci. Astron. ; Wako, RIKEN) ; Kaga, C (ADSM, Hiroshima) et al.
We developed an antihydrogen beam detector for the microwave spectroscopy of the antihydrogen hyperfine splitting. The detector consists of a position sensitive BGO calorimeter and a hodoscope. [...]
2017 - 6 p.
- Published in : JPS Conf. Proc. 18 (2017) 011038
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011038
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Measurements and 3D reconstruction of antimatter annihilations with the ASACUSA Micromegas Tracker
/ Radics, B (RIKEN (main) ; Zurich, ETH) ; Breuker, H (CERN) ; Dupre, P (RIKEN (main)) ; Higashi, Y (U. Tokyo (main)) ; Kaga, C (ADSM, Hiroshima) ; Leali, M (INFN, Brescia ; Brescia U.) ; Lodi Rizzini, E (INFN, Brescia ; Brescia U.) ; Mascagna, V (INFN, Brescia ; Brescia U.) ; Matsudate, T (U. Tokyo (main)) ; Murtagh, D J (RIKEN (main)) et al.
The aim of the ASACUSA-CUSP experiment is to form a beam of antihydrogen atoms for in-flight precision spectroscopic measurements. This is performed by trapping and mixing antiprotons and positrons in a common nested-well potential, which is sitting in a double-cusp magnetic field with minimum-B field configuration. [...]
2017 - 6 p.
- Published in : JPS Conf. Proc. 18 (2017) 011010
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011010
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Antihydrogen synthesis in a double-cusp trap
/ Kuroda, Naofumi (Tokyo U., Komaba) ; Tajima, Minori (Tokyo U., Komaba ; RIKEN (main)) ; Radics, Balint (RIKEN (main)) ; Dupré, Pierre (RIKEN (main)) ; Nagata, Yugo (Tokyo U. of Agric. Tech.) ; Kaga, Chikato (ADSM, Hiroshima) ; Kanai, Yasuyuki (RIKEN (main)) ; Leali, Marco (Brescia U. ; INFN, Brescia) ; Rizzini, Evandro Lodi (Brescia U. ; INFN, Brescia) ; Mascagna, Valerio (Brescia U. ; INFN, Brescia) et al.
The ASACUSA CUSP experiment plans a high precision spectroscopy of the ground-state hyperfine splitting of antihydrogen to test CPT symmetry. To perform this, a Rabi-like antiatomic beam method has been developed with a novel double-cusp trap. [...]
2017 - 6 p.
- Published in : JPS Conf. Proc. 18 (2017) 011009
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011009
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5.
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Antihydrogen synthesis in a double-CUSP trap towards test of the CPT-symmetry
/ Radics, B (Nishina Ctr., RIKEN ; Zurich, ETH) ; Ishikawa, S (Tokyo U., Komaba) ; Kuroda, N (Tokyo U., Komaba) ; Murtagh, D J (Nishina Ctr., RIKEN) ; Nagata, Y (Nishina Ctr., RIKEN) ; Tajima, M (Tokyo U., Komaba) ; Gorp, S (Nishina Ctr., RIKEN) ; Abo, Y (ADSM, Hiroshima) ; Dupre, P (Nishina Ctr., RIKEN) ; Higashi, Y (Tokyo U., Komaba) et al.
The aim of the ASACUSA-CUSP experiment at CERN is to produce a cold, polarised antihydrogen beam and perform a high precision measurement of the ground-state hyperfine transition frequency of the antihydrogen atom and compare it with that of the hydrogen atom using the same spectroscopic beam line. Towards this goal a significant step was successfully accomplished: synthesised antihydrogen atoms have been produced in a CUSP magnetic configuration and detected at the end of our spectrometer beam line in 2012 [1]. [...]
2016
- Published in : Hyperfine Interact. 237 (2016) 156
In : 6th International Symposium on Symmetries in Subatomic Physics, Victoria, Canada, 08 - 12 Jun 2015, pp.156
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The development of the antihydrogen beam detector and the detection of the antihydrogen atoms for in-flight hyperfine spectroscopy
/ Nagata, Y (Wako, RIKEN) ; Sauerzopf, C (Stefan Meyer Inst. Subatomare Phys.) ; Capon, A (Stefan Meyer Inst. Subatomare Phys.) ; Kuroda, N (Tokyo, U. Earth Sci. Astron.) ; Abo, Y ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Dupre, P (Wako, RIKEN) ; Higashi, Y (Tokyo, U. Earth Sci. Astron.) ; Ishikawa, S (Tokyo, U. Earth Sci. Astron.) ; Kaga, C (ADSM, Hiroshima) et al.
We have been developing ground-state antihydrogen atomic beams to test CPT symmetry via in-flight hyperfine spectroscopy. A new antihydrogen beam detector has been developed. [...]
2015 - 1 p.
- Published in : J. Phys.: Conf. Ser. 635 (2015) 022061
IOP Open Access article: PDF;
In : 29th International Conference on Photonic, Electronic, and Atomic Collisions, Toledo, Spain, 22 - 28 July 2015, pp.022061
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7.
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Towards Measuring the Ground State Hyperfine Splitting of Antihydrogen -- A Progress Report
/ Sauerzopf, C. (Stefan Meyer Inst. Subatomare Phys.) ; Capon, A.A. (Stefan Meyer Inst. Subatomare Phys.) ; Diermaier, M. (Stefan Meyer Inst. Subatomare Phys.) ; Dupré, P. (Wako, RIKEN) ; Higashi, Y. (Tokyo U., Komaba) ; Kaga, C. (ADSM, Hiroshima) ; Kolbinger, B. (Stefan Meyer Inst. Subatomare Phys.) ; Leali, M. (Brescia U. ; INFN, Pavia) ; Lehner, S. (Stefan Meyer Inst. Subatomare Phys.) ; Lodi Rizzini, E. (Brescia U. ; INFN, Pavia) et al.
We report the successful commissioning and testing of a dedicated field-ioniser chamber for measuring principal quantum number distributions in antihydrogen as part of the ASACUSA hyperfine spectroscopy apparatus. The new chamber is combined with a beam normalisation detector that consists of plastic scintillators and a retractable passivated implanted planar silicon (PIPS) detector..
arXiv:1606.01791.-
2016-06-20 - 5 p.
- Published in : Hyperfine Interact. 237 (2016) 103
Fulltext: PDF; External link: Preprint
In : 6th International Symposium on Symmetries in Subatomic Physics, Victoria, Canada, 08 - 12 Jun 2015, pp.103
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