The WASA detector facility at CELSIUS

Bargholtz, Chr.; Bashkanov, M.; Berłowski, M.; Bondar, A.; Bogoslawsky, D.; Brodowski, W.; Brudvik, J.; Calén, H.; Capellaro, F.; Chilingarov, A.; Clement, H.; Comfort, J.R.; Demirörs, L.; Ekström, C.; Fransson, K.; Fridén, C-J; Gerén, L.; Gornov, M.G.; Grebenev, V.; Greiff, J.; Gurov, Yu. B.; Gustafsson, L.; Höistad, B.; Ivanov, G.; Jacewicz, M.; Jiganov, E.; Johansson, A.; Johansson, T.; Keleta, S.; Khakimova, O.; Khoukaz, A.; Kilian, K.; Kimura, N.; Koch, I.; Kolachev, G. M.; Kren, F.; Kullander, S.; Kupść, A.; Kuzmin, A.; Kuznetsov, A.; Lindberg, K.; Marciniewski, P.; Meier, R.; Messner, O.; Morosov, B.; Nawrot, A.; Nefkens, B. M. K.; Norman, G.; Oelert, W.; Pauly, C.; Pettersson, Henrik; Пивоваров, А. А.; Pätzold, J.; Petukhov, Y.; Povtorejko, A.; Reistad, D.; Ruber, Roger; Sandukovsky, S.; Schönning, K.; Scobel, W.; Sefzick, T.; Shafigullin, R.; Shwartz, B.; Sidorov, V.; Skorodko, T.; Sopov, V.; Starostin, A.; Steṕaniak, J.; Суханов, А.; Tchernyshev, V.; Tegnér, P.-E.; Engblom, P. Thörngren; Tikhomirov, V.; Toki, H.; Turowiecki, A.; Wagner, G. J.; Wiedner, U.; Wilhelmi, Z.; Wolke, M.; Yamamoto, A.; Yokota, Hiroshi; Zabierowski, J.; Zartova, I.; Złomańczuk, J.

doi:10.1016/j.nima.2008.06.011

Cited by 92 publications

(31 citation statements)

References 17 publications

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“…The experiment studying the 1 H(d, pp)n breakup reaction at beam energies 300, 340, 380 and 400 MeV has been performed at the Cooler Synchrotron COSY-Jülich with the WASA (Wide Angle Shower Apparatus) detector [8,9]. The detection system consists of four main components: Central Detector (CD), Forward Detector (FD), a pellet target device and a scattering chamber.…”

Section: Discussionmentioning

confidence: 99%

Experimental Study of Three-Nucleon Dynamics in the Dp Breakup Collisions Using the WASA Detector

et al. 2017

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Until recently, all calculations of breakup observables were carried out in a non-relativistic regime. The relativistic treatment of the breakup reaction in 3 N system is quite a new achievement. The detailed study of various aspects of few-nucleon system dynamics in medium energy region, with a particular emphasis on investigation of relativistic effects and their interplay with three nucleon force (3NF) becomes feasible with increasing available energy in the three nucleon system. Therefore an experiment to investigate the 1 H(d, pp)n breakup cross section using a deuteron beam of 300, 340, 380 and 400 MeV and the WASA detector has been performed at COSY-Jülich. The almost 4π geometry of the WASA detector gives an unique possibility to study variety of kinematic configurations, which reveal different sensitivity to aspects of dynamics of the three nucleon system. The main steps of the analysis, including energy calibration, PID, normalization and efficiency studies, and their impact on the final accuracy of the result, are discussed.

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Section: Discussionmentioning

confidence: 99%

Experimental Study of Three-Nucleon Dynamics in the Dp Breakup Collisions Using the WASA Detector

et al. 2017

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“…The experiment using the 1 H(d, pp)n breakup reaction at 340, 380 and 400 MeV deuteron beam energy has been performed in January 2013 at the Cooler Synchrotron COSY-Jülich with the WASA-at-COSY detector [8,9]. The WASA (Wide Angle Shower Apparatus) detector consists of four main components: Central Detector (CD), Forward Detector (FD), Pellet Target Device and the Scattering Chamber, covering almost full solid angle (see Fig.…”

Section: Methodsmentioning

confidence: 99%

Systematic Study of Three-Nucleon Systems Dynamics in the Cross Section of the Deuteron–Proton Breakup Reaction

et al. 2014

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An experiment to investigate the 1 H(d, pp)n breakup reaction using a deuteron beam of 340, 380 and 400 MeV and the WASA detector has been performed at the Cooler Synchrotron COSY-Jülich. The main goal was the detailed study of various aspects of few-nucleon dynamics in the medium energy region, with particular emphasis on relativistic effects and their interplay with three nucleon forces. These effects become more important with increasing available energy in the three nucleon system. Therefore the investigations at high energies are crucial to understand their nature. The almost 4π geometry of the WASA detector gives an unique possibility to study various aspects of dynamics of processes in the three-nucleon reaction. Preliminary results obtained using the WASA detector are presented.

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“…WASA (Wide Angle Shower Aparatus) detection system [66][67][68][69] was installed at COSY since 2007 till 2014. Before 2005 it was operating at CELSIUS storage ring at Svedberg Laboratory in Uppsala, Sweden [67]. WASA detector has almost 4π geometry and consists…”

Section: Wasa-at-cosy Detector Setupmentioning

confidence: 99%

Search for η-mesic ³He in non-mesonic final state

2019

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The experiment on searching for η-mesic 3He nucleus was performed in May 2014 at COSY accelerator in Juelich by WASA-at-COSY Collaboration. The measurements were carried out using ramped beam technique which allows for the slow and continuous beam momentum change near the threshold of η meson creation. The luminosity was obtained based on pd → 3Heη reaction and quasielastic proton-proton scattering. The bound state of η-meson and 3He nucleus is searched for in pd → 3He2γ and pd → 3He6γ channels. The analysis is still in progress and the estimated upper limit value is on the level of few nanobarns.

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The WASA detector facility at CELSIUS

Cited by 92 publications

References 17 publications

Experimental Study of Three-Nucleon Dynamics in the Dp Breakup Collisions Using the WASA Detector

Experimental Study of Three-Nucleon Dynamics in the Dp Breakup Collisions Using the WASA Detector

Systematic Study of Three-Nucleon Systems Dynamics in the Cross Section of the Deuteron–Proton Breakup Reaction

Search for η-mesic ³He in non-mesonic final state

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The WASA detector facility at CELSIUS

Cited by 92 publications

References 17 publications

Experimental Study of Three-Nucleon Dynamics in the Dp Breakup Collisions Using the WASA Detector

Experimental Study of Three-Nucleon Dynamics in the Dp Breakup Collisions Using the WASA Detector

Systematic Study of Three-Nucleon Systems Dynamics in the Cross Section of the Deuteron–Proton Breakup Reaction

Search for η-mesic 3He in non-mesonic final state

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Product

Resources

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Search for η-mesic ³He in non-mesonic final state