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Injection and capture of antiprotons in a Penning–Malmberg trap using a drift tube accelerator and degrader foil
/ Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H. (Wako, RIKEN) ; Bumbar, M. (CERN) ; Chesnevskaya, S. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (Brescia U. ; INFN, Pavia) ; Ferragut, R. (INFN, Milan ; Padua U. ; INFN, Padua) ; Giammarchi, M. (Padua U. ; INFN, Padua) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Gosta, G. (Brescia U. ; INFN, Pavia) ; Higaki, H. (Hiroshima U.) et al.
The Antiproton Decelerator (AD) at CERN provides antiproton bunches with a kinetic energy of 5.3 MeV. The Extra-Low ENergy Antiproton ring at CERN, commissioned at the AD in 2018, now supplies a bunch of electron-cooled antiprotons at a fixed energy of 100 keV. [...]
arXiv:2403.09268.-
2024-06-12 - 22 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1065 (2024) 169529
Fulltext: PDF;
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Injection and capture of antiprotons in a Penning-Malmberg trap using a drift tube accelerator and degrader foil
/ Amsler, C. ; Breuker, H. ; Bumbar, M. ; Chesnevskaya, S. ; Costantini, G. ; Ferragut, R. ; Giammarchi, M. ; Gligorova, A. ; Gosta, G. ; Higaki, H. et al.
/Asacusa AD-3
The Antiproton Decelerator (AD) at CERN provides antiproton bunches with a kinetic energy of 5.3 MeV. The Extra-Low ENergy Antiproton ring at CERN, commissioned at the AD in 2018, now supplies a bunch of electron- cooled antiprotons at a fixed energy of 100 keV. [...]
CERN-EP-2024-060.-
Geneva : CERN, 2024 - 22.
- Published in : Nucl. Instrum. Methods Phys. Res. A
Draft (restricted): PDF; Fulltext: PDF;
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Reducing the background temperature for cyclotron cooling in a cryogenic Penning–Malmberg trap
/ Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H (Wako, RIKEN) ; Chesnevskaya, S (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G (Brescia U. ; INFN, Pavia) ; Ferragut, R (INFN, Milan ; Milan U.) ; Giammarchi, M (INFN, Milan ; Milan U.) ; Gligorova, A (Stefan Meyer Inst. Subatomare Phys.) ; Gosta, G (Brescia U. ; INFN, Pavia) ; Higaki, H (Hiroshima U.) ; Hunter, E D (Stefan Meyer Inst. Subatomare Phys.) et al.
Magnetized nonneutral plasma composed of electrons or positrons couples to the local microwave environment via cyclotron radiation. The equilibrium plasma temperature depends on the microwave energy density near the cyclotron frequency. [...]
2022 - 13 p.
- Published in : Phys. Plasmas 29 (2022) 083303
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Upgrade of ASACUSA's Antihydrogen Detector
/ Kraxberger, V. (Stefan Meyer Inst. Subatomare Phys.) ; Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H. (Wako, RIKEN) ; Chesnevskaya, S. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (Brescia U. ; INFN, Pavia) ; Ferragut, R. (Milan, Polytech. ; INFN, Milan ; Milan U.) ; Giammarchi, M. (INFN, Milan ; Milan U.) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Gosta, G. (Brescia U. ; INFN, Pavia) ; Higaki, H. (Hiroshima U.) et al.
The goal of the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) CUSP experiment at CERN's Antiproton Decelerator is to measure the ground state hyperfine splitting of antihydrogen in order to test whether CPT invariance is broken. The ASACUSA hodoscope is a detector consisting of two layers of 32 plastic scintillator bars individually read out by two serially connected silicon photo multipliers (SiPMs) on each end. [...]
arXiv:2204.11572.-
2023-01-01 - 3 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1045 (2023) 167568
Fulltext: 2204.11572 - PDF; Publication - PDF;
In : Vienna Conference on Instrumentation (VCI 2022), Online, Austria, 21 - 25 Feb 2022
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Cyclotron cooling to cryogenic temperature in a Penning-Malmberg trap with a large solid angle acceptance
/ Amsler, C ; Breuker, H ; Chesnevskaya, S ; Costantini, G ; Ferragut, R ; Giammarchi, M ; Gligorova, A ; Gosta, G ; Higaki, H ; Hunter, E D et al.
Magnetized nonneutral plasma composed of electrons or positrons couples to the local microwave environment via cyclotron radiation. The equilibrium plasma temperature depends on the microwave energy density near the cyclotron frequency. [...]
CERN-EP-2022-069.-
Geneva : CERN, 2022 - 11.
Draft (restricted): PDF; Fulltext: PDF;
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Measurement of the Principal Quantum Number Distribution in a Beam of Antihydrogen Atoms
/ Kolbinger, B. (Stefan Meyer Inst. Subatomare Phys. ; CERN) ; Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Cuendis, S. Arguedas (Stefan Meyer Inst. Subatomare Phys. ; CERN) ; Breuker, H. (RIKEN (main)) ; Capon, A. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (U. Brescia ; INFN, Pavia) ; Dupré, P. (RIKEN (main)) ; Fleck, M. (Tokyo U., Komaba) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Higaki, H. (Hiroshima U. (main)) et al.
The ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration plans to measure the ground-state hyperfine splitting of antihydrogen in a beam at the CERN Antiproton Decelerator with initial relative precision of 10-6 or better, to test the fundamental CPT (combination of charge conjugation, parity transformation and time reversal) symmetry between matter and antimatter. This challenging goal requires a polarised antihydrogen beam with a sufficient number of antihydrogen atoms in the ground state. [...]
arXiv:2008.04246.-
2021-03-08 - 14 p.
- Published in : Eur. Phys. J. D 75 (2021) 91
Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
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The ASACUSA Micromegas Tracker: A cylindrical, bulk Micromegas detector for antimatter research
/ Radics, B (RIKEN (main)) ; Nagata, Y (RIKEN (main)) ; Yamazaki, Y (RIKEN (main)) ; Ishikawa, S (Tokyo, U. Earth Sci. Astron.) ; Kuroda, N (Tokyo, U. Earth Sci. Astron.) ; Matsuda, Y (Tokyo, U. Earth Sci. Astron.) ; Anfreville, M (IRFU, Saclay) ; Aune, S (IRFU, Saclay) ; Boyer, M (IRFU, Saclay) ; Chateau, F (IRFU, Saclay) et al.
The ASACUSA Micromegas Tracker (AMT; ASACUSA: Atomic Spectroscopy and Collisions Using Slow Antiprotons) was designed to be able to reconstruct antiproton-nucleon annihilation vertices in three dimensions. The goal of this device is to study antihydrogen formation processes in the ASACUSA cusp trap, which was designed to synthesise a spin-polarised antihydrogen beam for precise tests of Charge, Parity, and Time (CPT) symmetry invariance. [...]
AIP, 2015 - 9 p.
- Published in : Rev. Sci. Instrum. 86 (2015) 083304
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Towards a precise measurement of the antihydrogen ground state hyperfine splitting in a beam: the case of in-flight radiative decays
/ Lundmark, R (Chalmers U. Tech.) ; Malbrunot, C (CERN ; INFN, Trento ; Stefan Meyer Inst. Subatomare Phys. ; Trento U.) ; Nagata, Y (KEK, Tsukuba) ; Radics, B (Zurich, ETH) ; Sauerzopf, C (Stefan Meyer Inst. Subatomare Phys.) ; Widmann, E (Stefan Meyer Inst. Subatomare Phys.)
The ASACUSA antihydrogen setup at the CERN Antiproton Decelerator (AD) consists of an antihydrogen source (cusp magnet coupled to a positron source and an antiproton catching magnet) followed by a spectrometer beamline. After production in the cusp, the antihydrogen atoms decay while they escape the trap leading to changes in their effective magnetic moment which in turn affect their trajectories in the beamline. [...]
IOP, 2015 - 8 p.
- Published in : J. Phys. B 48 (2015) 184001
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