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1.
Search for polarized antiproton production / Grzonka, D (Julich, Forschungszentrum) ; Alfs, D (Julich, Forschungszentrum ; Jagiellonian U.) ; Asaturyan, A (NAS Armenia, Yerevan) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Hauenstein, F (Old Dominion U.) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
The production of antiprotons is studied in view of possible polarization effects as basis for a polarized antiproton beam. If antiprotons are produced with some polarization, a quite simple procedure for the generation of a polarized antiproton beam could be worked out. [...]
2019 - 8 p. - Published in : Hyperfine Interact. 240 (2019) 22
In : 13th International Conference on Low Energy Antiproton Physics, Paris, France, 12 - 16 Mar 2018, pp.22
2.
Drift chamber calibration and particle identification in the P-349 experiment / Alfs, D (Julich, Forschungszentrum ; Jagiellonian U.) ; Asaturyan, A (NAS Armenia, Yerevan) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Grzonka, D (Julich, Forschungszentrum) ; Hauenstein, F (Old Dominion U.) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
The goal of the P-349 experiment is to test whether 3.5 GeV/c antiprotons produced in high-energy proton-proton collisions are polarized in view of the preparation of a polarized antiproton beam. In this article, we present the details of the ongoing analysis focused on the drift chambers calibration and particle identification with DIRC..
2019 - 4 p. - Published in : EPJ Web Conf. 199 (2019) 05017 Fulltext: PDF;
In : 15th International Workshop on Meson Physics, Kraków, Poland, 7 - 12 Jun 2018, pp.05017
3.
Polarization analysis of $\bar{\rho}$ produced in pA collisions / Grzonka, D (Julich, Forschungszentrum) ; Alfs, D (Julich, Forschungszentrum ; Jagiellonian U.) ; Asaturyan, A (NAS Armenia, Yerevan) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Hauenstein, F (Old Dominion U.) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to investigate this possibility measurements of the polarization of produced antiprotons have been started at a CERN/PS test beam. [...]
2019 - 4 p. - Published in : EPJ Web Conf. 199 (2019) 05013 Fulltext: PDF;
In : 15th International Workshop on Meson Physics, Kraków, Poland, 7 - 12 Jun 2018, pp.05013
4.
Recent Developments from ASACUSA on Antihydrogen Detection / Kolbinger, B (Stefan Meyer Inst. Subatomare Phys.) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H (Nishina Ctr., RIKEN) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Dupré, P (Nishina Ctr., RIKEN) ; Fleck, M (Stefan Meyer Inst. Subatomare Phys.) ; Gligorova, A (Stefan Meyer Inst. Subatomare Phys.) ; Higaki, H (Hiroshima U.) ; Kanai, Y (Nishina Ctr., RIKEN) ; Kobayashi, T (Tokyo U.) et al. /Asacusa
The ASACUSA Collaboration at CERNs Antiproton Decelerator aims to measure the ground state hyperfine splitting of antihydrogen with high precision to test the fundamental symmetry of CPT (combination of charge conjugation, parity transformation, and time reversal). For this purpose an antihydrogen detector has been developed. [...]
2018 - 6 p. - Published in : EPJ Web Conf. 181 (2018) 01003 Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 11 - 15 Sep 2017, pp.01003
5.
A hydrogen beam to characterize the ASACUSA antihydrogen hyperfine spectrometer / ASACUSA Collaboration
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 [...]
arXiv:1812.06736.- 2019-08-11 - 11 p. - Published in : Nucl. Instrum. Meth. A 935 (2019) 110-120 Fulltext: PDF; Fulltext from Publisher: PDF;
6.
Hyperfine spectroscopy of hydrogen and antihydrogen in ASACUSA / ASACUSA Collaboration
The ASACUSA collaboration at the Antiproton Decelerator of CERN aims at a precise measurement of the antihydrogen ground-state hyperfine structure as a test of the fundamental CPT symmetry. A beam of antihydrogen atoms is formed in a CUSP trap, undergoes Rabi-type spectroscopy and is detected downstream in a dedicated antihydrogen detector. [...]
arXiv:1809.00875.- 2018-12-17 - Published in : Hyperfine Interact. 240 (2019) 5 Fulltext: PDF; Fulltext from Publisher: PDF;
In : 7th Symposium on Symmetries in Subatomic Physics, Aachen, Germany, 11 - 15 Jun 2018, pp.5
7.
Drift Chamber Calibration and Track Reconstruction in the P349 Antiproton Polarization Experiment / Alfs, D (Jagiellonian U.) ; Głowacz, B (Jagiellonian U.) ; Moskal, P (Jagiellonian U.) ; Zieliński, M (Jagiellonian U.) ; Grzonka, D (Julich, Forschungszentrum) ; Hauenstein, F (Julich, Forschungszentrum) ; Kilian, K (Julich, Forschungszentrum) ; Lersch, D (Julich, Forschungszentrum) ; Ritman, J (Julich, Forschungszentrum) ; Sefzick, T (Julich, Forschungszentrum) et al.
The goal of the P349 experiment is to test whether the antiproton production process can be itself a source of antiproton polarization. In this article, we present the motivation and details of the performed measurement. [...]
2017 - 6 p. - Published in : Acta Phys. Pol. B 48 (2017) 1983-1988 Fulltext: PDF;
In : 2nd Jagiellonian Symposium of Fundamental and Applied Subatomic Physics, Krakow, June 4-9, 2017, pp.1983-1988
8.
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
9.
Annihilation detector for an in-beam spectroscopy apparatus to measure the ground state hyperfine splitting of antihydrogen / Sauerzopf, Clemens (Stefan Meyer Inst. Subatomare Phys.) ; Capon, Aaron A (Stefan Meyer Inst. Subatomare Phys.) ; Diermaier, Martin (Stefan Meyer Inst. Subatomare Phys.) ; Fleck, Markus (Stefan Meyer Inst. Subatomare Phys.) ; Kolbinger, Bernadette (Stefan Meyer Inst. Subatomare Phys.) ; Malbrunot, Chloé (Stefan Meyer Inst. Subatomare Phys. ; CERN) ; Massiczek, Oswald (Stefan Meyer Inst. Subatomare Phys.) ; Simon, Martin C (Stefan Meyer Inst. Subatomare Phys.) ; Vamosi, Stefan (Stefan Meyer Inst. Subatomare Phys.) ; Zmeskal, Johann (Stefan Meyer Inst. Subatomare Phys.) et al.
The matter-antimatter asymmetry observed in the universe today still lacks a quantitative explanation. One possible mechanism that could contribute to the observed imbalance is a violation of the combined Charge-, Parity- and Time symmetries (CPT). [...]
2017 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 845 (2017) 579-582 Fulltext: PDF;
In : 14th Vienna Conference on Instrumentation, Vienna, Austria, 15 - 19 Feb 2016, pp.579-582
10.
Status of the analysis for the search of polarization in the antiproton production process / Alfs, D (Jagiellonian U.) ; Asaturyan, A (Yerevan Phys. Inst.) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Grzonka, D (Julich, Forschungszentrum) ; Hauenstein, F (Julich, Forschungszentrum) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
The P-349 experiment aims to test whether for antiprotons the production process itself can be a source of polarization in view of the preparation of a polarized antiproton beam. In this article we present the details of performed measurements and report on the status of the ongoing analysis..
2016 - 3 p. - Published in : EPJ Web Conf. 130 (2016) 07002 Fulltext: PDF;
In : 14th International Workshop on Meson Production, Properties and Interaction, Krakow, Poland, 2 - 7 Jun 2016, pp.07002

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