Plastic detectors for medium energy neutrons

Ahmidouch, A.; Bach, P.; Heß, R.; Kunne, R.; Lechanoine‐Leluc, C.; Mascarini, C.; Rapin, D.; Arvieux, J.; Bertini, R.; Catz, H.; Faivre, J.C.; Perrot‐Kunne, F.; Bradamante, F.; Martin, A.

doi:10.1016/0168-9002(93)90857-e

Cited by 27 publications

(6 citation statements)

References 11 publications

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“…Clear signals from stopped protons and deuterons are seen. The observed deviation from linearity in the data is caused by a known saturation effect of the meantimer-discriminator module [51]. No significant signal from stopped pions is observed due to several reasons: i) a pion-to-proton ratio of only about 1:6 from the reaction np → ppπ − is expected within the TOF wall acceptance where most pions have large momenta; ii) the probability for a pion decaying before reaching the TOF wall is more than 50% for γ < 1.25; iii) pions with γ < 1.12 stopped before reaching the TOF wall.…”

Section: Particle-to-track Associationmentioning

confidence: 95%

“…The wall consisted of two groups of seven BC412 scintillator bars with dimensions of 300 × 20 × 8 cm 3 instrumented on both sides with Philips XP2040 photomultiplier tubes. The bars and photomultipliers had been already used in the LEAR experiment PS199 [51]. The two groups were separated by two smaller BC408 scintillator bars with dimensions of 100 × 10 × 10 cm 3 viewed from the outer side by Philips XP2020 photomultiplier tubes.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…The electronics for all scintillator detectors had been already successfully operated in the LEAR experiment PS199 [51] and the PSI experiments on elastic np scattering [52]. Compact CAMAC-modules, constructed by the University of Geneva, with constant-fraction discriminators and mean-timers (DPNC 982) provided output signals for ADC and TDC measurements as well as for trigger building.…”

Section: Electronics and Data Acquisitionmentioning

confidence: 99%

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The reaction np→ppπ- from threshold up to 570 MeV

et al. 2007

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Abstract. Due to a coding error, the previous paper quoted incorrect values for the differential cross sections dσ/ dMpp and dσ/ dΩ * π of the process np → ppπ − . Due to a coding error, the previous paper [1] quoted incorrect values for the differential cross sections of the process np → ppπ − . The differential cross sections dσ/ dM pp as shown in Fig. 9 of [1] are too small by a factor of two. In Table 3 The online version of the original article can be found at http://dx

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Section: Particle-to-track Associationmentioning

confidence: 95%

Section: Experimental Set-upmentioning

confidence: 99%

Section: Electronics and Data Acquisitionmentioning

confidence: 99%

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The reaction np→ppπ- from threshold up to 570 MeV

et al. 2007

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“…Each unit consists of an iron slab, 3 cm thick, where most of the annihilations are expected to take place, sandwiched on both sides by a module of four limited streamer tubes (LST) planes and one hodoscope of six vertical scintillation counters. The neutron counters [ 12] consist of vertical scintillator bars, 8 cm wide and 20 cm thick; the bar heights range from 80 to 110 cm in ND. The bars are viewed from each end by a photomultiplier (PM) and both TDC and ADC informations are recorded.…”

Section: Experimental Methodsmentioning

confidence: 99%

A high-statistics measurement of the charge-exchange reaction at 875 MeV/c

et al. 1995

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A new measurement of the differential cross section and of the analysing power Aon of the charge-exchange reaction Op-~ fin at 875 MeV/c is presented. The A0~ data cover the entire angular range and constitute a considerable improvement over previously published data, both in the forward and in the backward hemisphere. The cross-section data cover only the backward region, but are unique at this energy. A careful study of the long-term drifts of the apparatus has allowed to fully exploit the good statistics of the data.

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“…ANC 3 consists of a neutron counter (NG) sandwiched by t w o LST and scintillation counters modules, identical to those making up ANC 1 and ANC 2 . The neutron counter [7] is a hodoscope of 27 vertical scintillator bars, 8 cm wide and 20 cm thick; the bar heights range from 110 to 130 cm. The bars are viewed from each end by a photomultiplier and both TDC and ADC information are recorded.…”

mentioning

confidence: 99%

High-precision measurement of the charge-exchange differential cross-section

et al. 1994

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The dierential pp ! nn charge-exchange cross section has been measured at the CERN Low Energy Antiproton Ring (LEAR), at two incident p momenta, 601 and 1202 MeV/c. The main features of the dierential cross-section near the forward direction, i.e. a sharp peak at 0 scattering angle followed by an energy dependent dip-bump structure, are conrmed and measured with good precision and high statistical accuracy. The data show v ery clearly that the shape of the cross-section is a manifestation of the pion-exchange amplitude, and a simple extrapolation to the pion pole already indicates that the pion-nucleon coupling constant f 2 c can be determined with good precision.

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Plastic detectors for medium energy neutrons

Cited by 27 publications

References 11 publications

The reaction np→ppπ- from threshold up to 570 MeV

The reaction np→ppπ- from threshold up to 570 MeV

A high-statistics measurement of the charge-exchange reaction at 875 MeV/c

High-precision measurement of the charge-exchange differential cross-section

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