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1.
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The ASACUSA CUSP: an antihydrogen experiment
/ Kuroda, N (Tokyo U., Komaba) ; Ulmer, S (Wako, RIKEN) ; Murtagh, D J (Wako, RIKEN) ; Gorp, S (Wako, RIKEN) ; Nagata, Y (Wako, RIKEN ; Tokyo U. of Agric. Tech.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Federmann, S (CERN) ; Leali, M (INFN, Brescia ; Brescia U.) ; Malbrunot, C (CERN) ; Mascagna, V (INFN, Brescia ; Brescia U.) et al.
In order to test CPT symmetry between antihydrogen and its counterpart hydrogen, the ASACUSA collaboration plans to perform high precision microwave spectroscopy of ground-state hyperfine splitting of antihydrogen atom in-flight. We have developed an apparatus (“cusp trap”) which consists of a superconducting anti-Helmholtz coil and multiple ring electrodes. [...]
2015 - 8 p.
- Published in : Hyperfine Interact. 235 (2015) 13-20
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2.
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Towards a spin polarized antihydrogen beam
/ Kuroda, N (Tokyo U., Komaba) ; Ulmer, S (Nishina Ctr., RIKEN) ; Murtagh, D J (Nishina Ctr., RIKEN) ; Gorp, S (Nishina Ctr., RIKEN) ; Nagata, Y (Nishina Ctr., RIKEN) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Federmann, S (CERN) ; Leali, M (INFN, Brescia ; Brescia U.) ; Malbrunot, C (Stefan Meyer Inst. Subatomare Phys.) ; Mascagna, V (INFN, Brescia ; Brescia U.) et al.
The ASACUSA collaboration has developed a cusp trap scheme to realize an in-flight high precision microwave spectroscopy of ground-state hyperfine splitting of antihydrogen ( H̄) for a stringent test of CPT symmetry. Cold H̄ atoms were successfullysynthesized by employing a cusp trap which consisted of a superconducting anti-Helmholtz coil and a stack of ring electrodes. [...]
2014 - 10 p.
- Published in : Hyperfine Interact. 228 (2014) 67-76
In : 11th International Conference on Low Energy Antiproton Physics, Uppsala, Sweden, 10 - 15 Jun 2013, pp.67-76
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3.
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An ultra low-noise AC beam transformer and digital signal processing system for CERN's ELENA ring
/ Angoletta, M E (CERN) ; Carli, C (CERN) ; Caspers, F (CERN) ; Federmann, S (CERN) ; Molendijk, J (CERN) ; Pedersen, F (CERN) ; Sanchez-Quesada, J (CERN)
CERN’s Extra Low ENergy Antiproton (ELENA) ring is a new synchrotron that will be commissioned in 2016 to further decelerate the antiprotons coming from CERN’s Antiproton Decelerator (AD). Essential longitudinal diagnostics required for commissioning and operation include the intensity measurement for bunched and debunched beams and the measurement of p/p for debunched beams to assess the electron cooling performance. [...]
2013
Published version from JACoW: PDF;
In : 2nd International Beam Instrumentation Conference, Oxford, UK, 16 - 19 Sep 2013, pp.atupf27
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4.
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Longitudinal beam diagnostic from a distributed electrostatic pick-up in CERN's ELENA ring
/ Angoletta, M E (CERN) ; Caspers, F (CERN) ; Federmann, S (CERN) ; Molendijk, J (CERN) ; Sanchez-Quesada, J (CERN) ; Secouet, P J (CERN) ; Søby, L (CERN) ; Pedersen, F (CERN) ; Timmins, M (CERN)
The CERN Extra Low ENergy Antiproton (ELENA) Ring is a new synchrotron that will be commissioned in 2016 to further decelerate the antiprotons coming from CERN’s Antiproton Decelerator (AD). Required longitudinal diagnostics include the intensity measurement for bunched and debunched beam and the measurement of Dp/p to assess the electron cooling performance. [...]
2013
Published version from JACoW: PDF;
In : 2nd International Beam Instrumentation Conference, Oxford, UK, 16 - 19 Sep 2013, pp.WEPF28
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5.
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6.
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AD status and consolidation plans
/ Eriksson, T (CERN) ; Angoletta, M E (CERN) ; Arnaudon, L (CERN) ; Belochitskii, P (CERN) ; Bojtar, L (CERN) ; Calviani, M (CERN) ; Caspers, F (CERN) ; Federmann, S (CERN) ; Jørgensen, L (CERN) ; Louwerse, R (CERN) et al.
The CERN Antiproton Decelerator (AD) has now completed its 12th year of supplying low-energy antiproton beams for the successful physics program. Most of the machine’s key components are in operation since more than 25 years and prompted by the approval of the ELENA project, a substantial consolidation program is now being launched to ensure continued reliable operation. [...]
2013 - 4 p.
Published version from JACoW: PDF;
In : International Workshop on Beam Cooling and Releated Topics, Mürren, Switzerland, 10 - 14 Jun 2013, pp.MOPM2HA02
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7.
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8.
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A source of antihydrogen for in-flight hyperfine spectroscopy
/ Kuroda, N (U. Tokyo Komaba, Inst. Phys.) ; Ulmer, S (RIKEN) ; Murtagh, D J (Atomic Phys. Lab., RIKEN) ; Van Gorp, S (Atomic Phys. Lab., RIKEN) ; Nagata, Y (Atomic Phys. Lab., RIKEN) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Federmann, S (CERN) ; Leali, M (U. Brescia ; INFN, Brescia) ; Malbrunot, C (Stefan Meyer Inst. Subatomare Phys.) ; Mascagna, V (U. Brescia ; INFN, Brescia) et al.
Antihydrogen, a positron bound to an antiproton, is the simplest antiatom. Its counterpart—hydrogen—is one of the most precisely investigated and best understood systems in physics research. [...]
2014
- Published in : Nature Commun. 5 (2014) 3089
NPG Open Access article: PDF;
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10.
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