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Steps towards the hyperfine splitting measurement of the muonic hydrogen ground state: pulsed muon beam and detection system characterization

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Published 12 May 2016 • , , Citation A. Adamczak et al 2016 JINST 11 P05007 DOI 10.1088/1748-0221/11/05/P05007

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1 Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Kraków, PL31342 Poland

2 National Institute for Nuclear Physics (INFN), Sezione di Milano Bicocca, Piazza della Scienza 3, Milano, Italy

3 Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, blvd. Tsarigradsko ch. 72, Sofia, 1142 Bulgaria

4 National Institute for Nuclear Physics (INFN), Sezione di Bologna, Viale Berti Pichat, 6/2, Bologna, Italy

5 National Institute for Nuclear Physics (INFN), Sezione di Trieste, via A. Valerio 2, Trieste, 34127 Italy

6 Elettra-Sincrotrone Trieste S.C.p.A., SS14, Km 163.5, Basovizza, Trieste, 34149 Italy

7 Department of Physics, University of Pavia, via Bassi 6, Pavia, Italy

8 National Institute for Nuclear Physics (INFN), Sezione di Pavia, Via Bassi 6, Pavia, Italy

9 National Institute for Nuclear Physics (INFN), Sezione di Roma Tre, Via della Vasca Navale 84, Roma, Italy

10 Dipartimento di Ingegneria, Università degli Studi Roma Tre, Via V. Volterra, 62, Roma, Italy

11 Dipartimento di Matematica e Fisica, Università di Roma Tre, Via della Vasca Navale 84, Roma, Italy

12 The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Trieste, 34151 Italy

13 RIKEN Nishina Center for Accelerator-Based Science, 2-1, Hirosawa, Wako, Saitama, 351-0198 Japan

14 IFN-CNR, Department of Physics, Politecnico di Milano and National Institute for Nuclear Physics (INFN), Sezione di Milano Politecnico, piazza Leonardo da Vinci 32, Milano, 20133 Italy

15 Dipartimento di Scienze, Università di Roma Tre, Viale G. Marconi 446, Roma, Italy

16 Department of Electrical, Computer, and Biomedical Engineering, University of Pavia, Via Ferrata 5, Pavia, Italy

17 Mathematics and Informatics Department, Udine University, via delle Scienze 206, Udine, Italy

Dates

  1. Received 5 April 2016
  2. Accepted 11 April 2016
  3. Published

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1748-0221/11/05/P05007

Abstract

The high precision measurement of the hyperfine splitting of the muonic-hydrogen atom ground state with pulsed and intense muon beam requires careful technological choices both in the construction of a gas target and of the detectors. In June 2014, the pressurized gas target of the FAMU experiment was exposed to the low energy pulsed muon beam at the RIKEN RAL muon facility. The objectives of the test were the characterization of the target, the hodoscope and the X-ray detectors. The apparatus consisted of a beam hodoscope and X-rays detectors made with high purity Germanium and Lanthanum Bromide crystals. In this paper the experimental setup is described and the results of the detector characterization are presented.

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Corrections were made to this article on 21 June 2016. An author name was amended.

10.1088/1748-0221/11/05/P05007