The WASA detector at CELSIUS

Bilger, R.; Blom, M.; Bogoslawsky, D.; Bondar, A.; Brodowski, W.; Calén, H.; Chuvilo, I.V.; Clement, H.; Dunin, V. B.; Dyring, J.; Ekström, C.; Fransson, K.; Fridén, C-J; Gustafsson, L.; Häggström, S.; Höistad, B.; Jacewicz, M.; Johanson, Jan; Johansson, A.; Johansson, Tommy; Khoukaz, A.; Kilian, K.; Kimura, N.; Koch, I.; Kolachev, G. M.; Komogorov, M.; Kullander, S.; Kupść, A.; Kurdadze, L.M.; Kuzmin, A.; Kuznetsov, A.; Marciniewski, P.; Martemyanov, A.; Martemyanov, B. V.; Morosov, B.; Mörtsell, A.; Nawrot, A.; Oelert, W.; Oreshkin, S.B.; Petukhov, Y.; Povtorejko, A.; Przestrzelska, K.; Pätzold, J.; Reistad, D.; Ruber, Roger; Sandukovsky, V. G.; Schuberth, U.; Sefzick, T.; Sidorov, V.; Shwartz, B.; Sopov, V.; Steṕaniak, J.; Sukhanov, A.; Sundberg, P.; Tchernychev, V.; Tikhomirov, V.; Turowiecki, A.; Wagner, G.; Wilhelmi, Z.; Yamamoto, A.; Yokota, Hiroshi; Zabierowski, J.; Zernov, A.; Złomańczuk, J.

doi:10.1016/s0375-9474(99)00773-3

Cited by 3 publications

(6 citation statements)

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“…The integrated luminosity of 340 nb −1 was derived from a comparison of elastic proton-proton scattering results measured in parallel with tabulated cross sections, as described in Ref. [20]. Due to the large pre-scaling factor associated with the pp trigger used, an error bar of about 10% must be associated with this value.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the pp → ppγ data were obtained simultaneously with those on pp → ppπ 0 [19], whose results were reported in greater detail in Ref. [20]. Since the detector assembly and the measurement techniques were identical in the two experiments, and the experimental procedures and data analysis differed only in minor details, the description will here be kept quite brief.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…As described fully in Ref. [20], the energy associated with a proton track was deduced from a combination of the calculated angle-dependent range up to the entrance of the stopping scintillator and the measured light output of that detector. A few protons stopped in one of the thin dead regions between the scintillator planes and these were then assigned the energy corresponding to the midpoint of the dead layer.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…The calibration, which was improved over that used in Ref. [20], led to a distribution for the time difference between the two protons with a peak width of 1.1 ns FWHM. This was essentially the same for both the forward-and backwardgoing photons, though a correction was introduced to compensate for a slight offset of 0.2 ns in the forward case.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…The experimental approach used in this work is identical to that employed at PROMICE-WASA for pion production [19,20] and so Sec. III and Sec.…”

Section: Introductionmentioning

confidence: 99%

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Measurement and analysis of thepp→ppγreaction at 310 MeV

et al. 2011

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The pp → ppγ reaction has been studied at a beam energy of 310 MeV by detecting both final protons at the PROMICE-WASA facility and identifying the photon through the resulting missingmass peak. The photon angular distribution in the center-of-mass system and those of the protonproton relative momentum with respect to the beam direction and to that of the recoil photon were determined reliably up to a final pp excitation energy of Epp ∼ 30 MeV. Except for very small Epp values, the behavior of these distributions with excitation energy is well reproduced by a new refined model of the hard bremsstrahlung process. The model reproduces absolutely the total cross section and its energy dependence to within the experimental and theoretical uncertainties.

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Section: Discussionmentioning

confidence: 99%

Section: Theoretical Modelmentioning

confidence: 99%

Section: Theoretical Modelmentioning

confidence: 99%

Section: Theoretical Modelmentioning

confidence: 99%

“…The experimental approach used in this work is identical to that employed at PROMICE-WASA for pion production [19,20] and so Sec. III and Sec.…”

Section: Introductionmentioning

confidence: 99%

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Measurement and analysis of thepp→ppγreaction at 310 MeV

et al. 2011

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Properties of the WASA pellet target and a stored intermediate-energy beam

Bargholtz

Gerén

Kupść

et al. 2008

Nuclear Instruments and Methods in Physics Research Section A:

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Medium modifications of the pion-pion interaction: A search for double pionic fusion in14N+d16O+2
Andersson
¹
,
Bargholtz
²
,
Blomquist
³

et al. 2001
Phys. Rev. C
0
0
0
0
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Double pion production in the reaction 14 Nϩd→ 16 O*ϩ2 has been investigated 99 MeV above the 2 0 threshold in the center-of-mass frame by recoil detection. Upper limits ͑2 standard deviations͒ to the differential cross sections for producing 16 O in a particle-stable state and pion pairs in the invariant mass range of 270 to 310 MeV/c 2 , d/d⍀(0°) c.m. Ͻ1.7 nb/sr and d/d⍀(180°) c.m. Ͻ1.3 nb/sr, were obtained. For invariant masses above 310 MeV/c 2 an upper limit to the cross section of 7 nb was obtained, assuming a constant production matrix element.

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The WASA detector at CELSIUS

Cited by 3 publications

References 1 publication

Measurement and analysis of thepp→ppγreaction at 310 MeV

Measurement and analysis of thepp→ppγreaction at 310 MeV

Properties of the WASA pellet target and a stored intermediate-energy beam

Medium modifications of the pion-pion interaction: A search for double pionic fusion in14N+d16O+2
Andersson
¹
,
Bargholtz
²
,
Blomquist
³

et al. 2001
Phys. Rev. C
0
0
0
0
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The WASA detector at CELSIUS

Cited by 3 publications

References 1 publication

Measurement and analysis of thepp→ppγreaction at 310 MeV

Measurement and analysis of thepp→ppγreaction at 310 MeV

Properties of the WASA pellet target and a stored intermediate-energy beam

Medium modifications of the pion-pion interaction: A search for double pionic fusion in14N+d16O+2Andersson1, Bargholtz2, Blomquist3 et al. 2001Phys. Rev. C0000View full textAdd to dashboardCite

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Medium modifications of the pion-pion interaction: A search for double pionic fusion in14N+d16O+2
Andersson
¹
,
Bargholtz
²
,
Blomquist
³

et al. 2001
Phys. Rev. C
0
0
0
0
View full text Add to dashboard Cite