53 research outputs found
Advanced mathematical on-line analysis in nuclear experiments. Usage of parallel computing CUDA routines in standard root analysis
Compute Unified Device Architecture (CUDA) is a parallel computing platform developed by NVIDIA for increase speed of graphics by usage of parallel mode for processes calculation. The success of this solution has opened technology General-Purpose Graphic Processor Units (GPGPUs) for applications not coupled with graphics. The GPGPUs system can be applying as effective tool for reducing huge number of data for pulse shape analysis measures, by on-line recalculation or by very quick system of compression. The simplified structure of CUDA system and model of programming based on example NVIDIA GForce GTX580 card are presented by our poster contribution in stand-Alone version and as ROOT application
ΔE-E detector system for searching long-lived heaviest nuclei deposited in scintillators
K. Zelga, A. Wieloch, Z. Majka, R. Płaneta, Z. Sosin, M. Adamczyk, K. Łojek,
M. Barbui, S. Wuenschel, K. Hagel, X. Cao, J. Natowitz, R. Wada, G. Giuliani,
E-J. Kim, H. ZhengWe present a dedicated experimental setup that has been built in Institute of Physics of the Jagiel-
lonian University and is currently used to search long lived super heavy elements (LLSHE) that
could be produced in the reaction between heavy ions and then deposited in the active catcher (AC)
scintillation material. The collisions between heavy nuclei 197Au (7.5 A.MeV) and 232Th have been
performed during our experiment at the Cyclotron Institute, Texas A&M in 2015. An innovative ap-
paratus, which consists of ΔE-E detectors, enables the registration and identification of spontaneous
decays ( or fission - SF) of heavy products, which were deposited in the scintillation material of
the AC. Unique feature of the apparatus is that the AC scintillators are at the same time ΔE part of
each of ΔE-E detector. The other part, E part, is a silicon detector. This construction largely elimi-
nates background events in the region where alpha particles emitted by decaying reaction products
are expected. Our measurements should be sensitive to search for super heavy elements (SHE) which
could be deposited in irradiated scintillators and which have lifetimes of a year till over a dozen of
years. Some results of the continuous measurement that already lasts 1.5 year will be shown
Recent results from NA61/SHINE
The research programme of the NA61 Collaboration covers a wide range
of hadronic physics in the CERN SPS energy range, encompassing measurements
of hadron–hadron, hadron–nucleus as well as nucleus–nucleus
collisions. The latter are analysed to better understand the properties of
hot and dense nuclear matter. In this paper, recent results of particle production
properties as well as event-by-event fluctuations in proton–proton,
as signatures of the critical point of strongly interacting matter, in Be+Be
and Ar+Sc interactions at beam energies of 19A/20A, 30A, 40A, 75A/80A
and 158A GeV/c are presented
α and α Conjugate Fragment Decay from the Disassembly of 28Si at Very High Excitation Energy
X. G. Cao, E. J. Kim, K. Hagel, M. Barbui, J. Gauthier, S. Wuenschel, G. Giuliani, M. R. D. Rodriguez, H. Zheng, M.
Huang, A. Bonasera, R. Wada, N. Blando, G. Q. Zhang, C. Y. Wong A.
Staszczak, Z. X. Ren, Y. K. Wang, S. Q. Zhang, J. Meng, J. B. NatowitzExclusive measurements for α and α conjugate exit channels are carried out for 35 MeV/nucleon 28Si
induced reactions. Systematic analyses of these channels reveal high energy resonance structures in
7 de-excitation channels. The resonances are compared with results of several recent theoretical
calculations for toroidal high-spin isomers. The possible underlying physics of these observations
are discussed
Particle production properties at SPS energy range - recent results from the NA61/SHINE experiment
One of the main physics goals of the NA61/SHINE programme on
strong interactions is the study of the properties of the onset of deconfinement.
This goal is pursued by performing an energy- (beam momentum
13A–158A GeV/c) and system-size (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La)
scan. In particular, recent inclusive spectra of identified hadrons in inelastic
p+p and centrality selected Be+Be and Ar+Sc interactions at the SPS
energies. The energy dependence of quantities inspired by the Statistical
Model of the Early Stage (kink, horn and step) are shown
Measurements of multiplicity fluctuations of identified hadrons in inelastic proton-proton interactions at the CERN Super Proton Synchrotron
A. Acharya, H. Adhikary, A. Aduszkiewicz, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad, J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev, W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk, M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, M. Koziel, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H.-J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, I. Pidhurskyi, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, O. Wyszyński, A. Zaitsev, E. D. Zimmerman, R. ZwaskaMeasurements of multiplicity fluctuations of
identified hadrons produced in inelastic p+p interactions
at 31, 40, 80, and 158 GeV/c beam momentum are presented.
Three different measures of multiplicity fluctuations
are used: the scaled variance ω and strongly intensive measures
and . These fluctuation measures involve second
and first moments of joint multiplicity distributions. Data
analysis is preformed using the Identity method which corrects
for incomplete particle identification. Strongly intensive
quantities are calculated in order to allowfor a direct comparison
to corresponding results on nucleus–nucleus collisions.
The results for different hadron types are shown as a function
of collision energy. A comparison with predictions of stringresonance
Monte-Carlo models: Epos, Smash and Venus,
is also presented
Spectra and mean multiplicities of π- in central 40Ar+45Sc collisions at 13A, 19A, 30A, 40A, 75A and 150A Ge V /cbeam momenta measured by the NA61/SHINE spectrometer at the CERN SPS
A. Acharya, H. Adhikary, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad, J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev, W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk, M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, M. Koziel, B. Kozłowski, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H. -J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, I. Pidhurskyi, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, O. Wyszyński, A. Zaitsev, E. D. Zimmerman, R. ZwaskaThe physics goal of the strong interaction program
of the NA61/SHINE experiment at the CERN Super
Proton Synchrotron (SPS) is to study the phase diagram of
hadronic matter by a scan of particle production in collisions
of nuclei with various sizes at a set of energies covering
the SPS energy range. This paper presents differential inclusive
spectra of transverse momentum, transverse mass and
rapidity of π
− mesons produced in central 40Ar+45Sc collisions
at beam momenta of 13A, 19A, 30A, 40A, 75A and
150A GeV/c. Energy and system size dependence of parameters
of these distributions –mean transversemass, the inverse
slope parameter of transverse mass spectra, width of the
rapidity distribution and mean multiplicity – are presented
and discussed. Furthermore, the dependence of the ratio of
the mean number of produced pions to the mean number of
wounded nucleons on the collision energy was derived. The
results are compared to predictions of several models
Measurement of the production cross section of 31 GeV/c protons on carbon via beam attenuation in a 90-cm-long target
pozostali autorzy: A. Acharya, H. Adhikary, A. Aduszkiewicz, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blonde, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad, J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev, W. Dominik, P. Dorosz, J. Dumarchez, R. Enge, G. A. Feofilov, L. Fields, Z. Fodor,16, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk, M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, Seweryn Kowalski, M. Koziel, B. Kozłowski, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H.-J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, M. Pavin, O. Petukhov, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, Szymon Puławski, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, Katarzyna Schmidt, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, Kamil Wójcik, O. Wyszyński, A. Zaitsev, E. D. Zimmerman, R. ZwaskaThe production cross section of 30.92 GeV/c protons on carbon is measured by the NA61/SHINE spectrometer at the CERN Super Proton Synchrotron by means of beam attenuation in a copy (replica) of the 90-cm-long target of the T2K neutrino oscillation experiment. The employed method for direct production cross-section estimation minimizes model corrections for elastic and quasielastic interactions. The obtained production cross section is σprod=227.6±0.8(stat)+1.9−3.2(sys)−0.8(mod) mb. It is in agreement with previous NA61/SHINE results obtained with a thin carbon target, while providing improved precision with a total fractional uncertainty of less than 2%. This direct measurement will reduce the uncertainty of the T2K neutrino flux prediction
Measurements of π±, K±, p and p¯spectra in 7Be+9Be collisions at beam momenta from 19A to 150A GeV/cwith the NA61/SHINE spectrometer at the CERN SPS
A. Acharya, H. Adhikary, A. Aduszkiewicz, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad , J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev , W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk , M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, M. Koziel, B. Kozłowski, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H. -J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, S. Mrówczyński, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, Z. Włodarczyk, O. Wyszyński, E. D. Zimmerman, R. ZwaskaThe NA61/SHINE experiment at the CERN
Super Proton Synchrotron (SPS) studies the onset of deconfinement
in hadron matter by a scan of particle production
in collisions of nuclei with various sizes at a set of energies
covering the SPS energy range. This paper presents results
on inclusive double-differential spectra, transverse momentum
and rapidity distributions and mean multiplicities of π
±,
K±, p and ¯ p produced in the 20% most central 7Be+9Be
collisions at beam momenta of 19A, 30A, 40A, 75A and
150A GeV/c. The energy dependence of the K±/π
± ratios
as well as of inverse slope parameters of the K± transverse
mass distributions are close to those found in inelastic p+p
reactions. The new results are compared to the world data
on p+p and Pb+Pb collisions as well as to predictions of the
Epos, Urqmd, Ampt, Phsd and Smash models
- …