First results from the 1994 lead beam run of WA97

Alexeev, G. D.; Andersen, E.; Andrighetto, A.; Antinori, F.; Armenise, N.; Bán, J.; Barberis, D.; Bayes, A. C.; Beker, H.; Benayoun, M.; Beusch, W.; Blaes, R.; Böhm, J.; Brom, J. M.; Campbell, M.; Cantatore, Eugenio; Carney, J. N.; Carrer, N.; Catanesi, M. G.; Chesi, E.; Dameri, M.; Darbo, G.; Davies, J.; Diaczek, A.; Bari, D. Di; Liberto, S. Di; Mauro, A. Di; Dufey, J.P.; Elia, D.; Evans, D.; Fanebust, K.; Fang, Ren-Hong; Farthouat, P.; Fini, R. A.; French, B. R.; Geist, W.; Gemme, C.; Ghidini, B.; Grella, G.; Guida, M.; Heijne, E.H.M.; Helstrup, H.; Holme, A.K.; Inyakin, A.V.; Jachołkowski, A.; Jovanović, P.; Jusko, A.; Kachanov, V.A.; Kachelhoffer, T.; Kahane, J.; Khodyrev, V.A.; Kinson, J.B.; Kirk, A.; Klempt, W.; Knudson, K.; Králik, I.; Lassalle, J. C.; Lenti, V.; Leruste, Ph.; Lien, J.; Lietava, R.; López, L.; Løvhøiden, G.; Luptak, M.; Macha, I.; Manzari, V.; Martinengo, P.; Mazzoni, M. A.; Meddi, F.; Michalon, A.; Michalon-Mentzer, M.E.; Middelkamp, P.; Morando, M.; Muciaccia, M. T.; Nappi, E.; Narjoux, J. L.; Navach, F.; Norman, K.L.; Osculati, B.; Pairat, M.; Pallarès, Anne; Pastirčák, B.; Pellegrini, F.; Piska, K.; Posa, F.; Quercigh, E.; Reister, J.L; Reitan, Trond; Ricci, R. A.; Romano, G.; Rosa, G. De; Rossi, L. P.; Rotscheidt, H.; Šafařı́k, K.; Pareja, J. Sahagun; Saladino, S.; Šándor, L.; Sclmane, S.; Scognetti, T.; Segato, G.; Sené, M.; Sené, R.; Sennels, P.; Shagin, P. M.; Simone, S.; Singovski, A.; Sopko, B.; Staroba, P.; Šťastný, J.; Storaas, T.; Szafran, S.; Thorsteinsen, T.F.; Tomasicchio, G.; Urbán, J.; Vanickova, M.; Vassiliadis, G.; Vettunen, H.; Baillie, O. Villalobos; Virgili, T.; Volte, A.; Voltolini, C.; Votruba, M.F.; Závada, P.

doi:10.1016/0375-9474(95)00232-p

Cited by 31 publications

(3 citation statements)

References 1 publication

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“…The layouts for the NA57 and WA97 experiments (figures 1(a) and (b)) are conceptually similar [5,6]. In both experiments, the charged tracks coming from strange particle decays are reconstructed in a telescope made from an array of silicon detector planes of 5 × 5 cm 2 cross-section placed in an approximately uniform magnetic field perpendicular to the beam line; the bulk of the detectors was closely packed in approximately 30 cm length, this compact part being used for pattern recognition.…”

Section: The Experimentsmentioning

confidence: 99%

Enhancement of hyperon production at central rapidity in 158AGeV/cPb–Pb collisions

Antinori¹,

Bacon²,

Badalà³

et al. 2006

J. Phys. G: Nucl. Part. Phys.

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Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. , and yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the in the central Pb-Pb collisions.

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Section: The Experimentsmentioning

confidence: 99%

Enhancement of hyperon production at central rapidity in 158AGeV/cPb–Pb collisions

Antinori¹,

Bacon²,

Badalà³

et al. 2006

J. Phys. G: Nucl. Part. Phys.

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“…The concept of hybrid-pixel photon-counting detectors (PCDs) has been demonstrated for the first time at CERN in 1991 [1, 2] for the application as particle tracking detectors in high-energy physics. Since then, due to the benefits this technology implies, a lot of effort has been made to investigate the applicability of PCDs in x-ray imaging.…”

Section: Introductionmentioning

confidence: 99%

Quantitative dual-energy micro-CT with a photon-counting detector for material science and non-destructive testing

et al. 2019

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The recent progress in photon-counting detector technology using high-Z semiconductor sensors provides new possibilities for spectral x-ray imaging. The benefits of the approach to extract spectral information directly from measurements in the projection domain are very advantageous for material science studies with x-rays as polychromatic artifacts like beam-hardening are handled properly. Since related methods require accurate knowledge of all energy-dependent system parameters, we utilize an adapted semi-empirical model, which relies on a simple calibration procedure. The method enables a projection-based decomposition of photon-counting raw-data into basis material projections. The objective of this paper is to investigate the method’s performance applied to x-ray micro-CT with special focus on applications in material science and non-destructive testing. Projection-based dual-energy micro-CT is shown to be of good quantitative accuracy regarding material properties such as electron densities and effective atomic numbers. Furthermore, we show that the proposed approach strongly reduces beam-hardening artifacts and improves image contrast at constant measurement time.

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“…Photon-counting detectors (PCDs) were originally developed at CERN for the application as particle tracking detectors in high-energy physics 18 , 19 . Since the concept provides several advantages over the clinically commonly used energy-integrating flat-panel detector technology, great efforts have been made during the last years to make the technology suitable for use in state-of-the-art imaging applications 20 , 21 .…”

Section: Introductionmentioning

confidence: 99%

Photon-counting spectral basis component material decomposition for musculoskeletal radiographs

Beck

Sellerer

Bodden

et al. 2020

Sci Rep

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As a very fast and non-invasive examination, conventional X-ray radiography is well established as the first line diagnostic imaging method of the human bone system. While major bone injuries such as fractures and dislocations are usually easily detectable on conventional X-ray images, more subtle injuries such as microfractures are often missed, leading to mistreatment and potential long-term consequences. The technology of Photon-Counting Dual-Energy Radiography (PCDER) yields the possibility to decompose conventional X-ray images into basis material images such as bone- and soft-tissue-equivalence images. The obtained basis material images offer significant advantages in terms of image contrast and image details over the raw attenuation image which shows an overlap of bone and soft tissue. Whereas the advantages of bone- and soft-tissue-equivalence images have been broadly discussed referring to bone subtraction images in the detection of pulmonary diseases, this method has not been considered for the analysis of musculoskeletal images until present. In this study we show that basis component equivalence images have high potential to improve the diagnostic accuracy of the detection of minor bone lesions during clinical trauma imaging. A reader study performed by three experienced radiologists compares the image quality of basis material images to a standard radiograph image of a non-fractured cadaveric hand.

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First results from the 1994 lead beam run of WA97

Cited by 31 publications

References 1 publication

Enhancement of hyperon production at central rapidity in 158AGeV/cPb–Pb collisions

Enhancement of hyperon production at central rapidity in 158AGeV/cPb–Pb collisions

Quantitative dual-energy micro-CT with a photon-counting detector for material science and non-destructive testing

Photon-counting spectral basis component material decomposition for musculoskeletal radiographs

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