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Items from 1 to 20 out of 26 results

article

Direct photon measurements in pp and Pb–Pb collisions with the ALICE experiment

M. Germain

Nuclear Physics A > 2017 > 967 > C > 696-699

Direct photon production in heavy-ion collisions provides a valuable set of observables to study the hot QCD medium. The direct photons are produced at different stages of the collision and escape the medium unaffected. In heavy-ion collisions, the direct photon yield at high transverse momentum (pT>5GeV/c) is dominated by prompt photons produced in hard scattering of incoming partons and provides...

article

Evidence for Effects of the Chiral Anomaly: Status and Future

Paul Sorensen

Nuclear Physics A > 2017 > 967 > C > 129-136

The unique identification of effects of the chiral anomaly in heavy ion collisions has been a challenge because alternative scenarios can often be constructed to explain the relevant findings. For this reason, the measurements remain open to interpretation. Because the unambiguous identification of effects caused by the chiral anomaly would represent one of the most profound discoveries from heavy...

article

Hardening of ODS ferritic steels under irradiation with high-energy heavy ions

Z.N. Ding, C.H. Zhang, Y.T. Yang, Y. Song, more

Journal of Nuclear Materials > 2017 > 493 > C > 53-61

Influence of the nanoscale oxide particles on mechanical properties and irradiation resistance of oxide-dispersion-strengthened (ODS) ferritic steels is of critical importance for the use of the material in fuel cladding or blanket components in advanced nuclear reactors. In the present work, impact of structures of oxide dispersoids on the irradiation hardening of ODS ferritic steels was studied...

article

The equation of state of hot, dense matter and neutron stars

James M. Lattimer, Madappa Prakash

Physics Reports > 2016 > 621 > C > 127-164

Recent developments in the theory of pure neutron matter and experiments concerning the symmetry energy of nuclear matter, coupled with recent measurements of high-mass neutron stars, now allow for relatively tight constraints on the equation of state of dense matter. We review how these constraints are formulated and describe the implications they have for neutron stars and core-collapse supernovae...

article

Bias Dependence of Single-Event Upsets in 16 nm FinFET D-Flip-Flops

Balaji Narasimham, Safar Hatami, Ali Anvar, David M. Harris, more

IEEE Transactions on Nuclear Science > 2015 > 62 > 6-1 > 2578 - 2584

With fabrication processes migrating from planar devices to FinFETs, the differences in physical structure necessitate evaluating the SEU mechanisms of FinFET-based circuits. Since FinFET-based bi-stable circuits have shown better stability at low supply voltages and hence improved power dissipation, it is also necessary to assess the SEU performance over a range of voltages. In this work, the SEU...

article

d+Au hadron correlation measurements from PHENIX

Anne M. Sickles

Annals of Physics > 2015 > 352 > C > 78-83

Recent observations of extended pseudorapidity correlations at the LHC in p+p and p+Pb collisions are of great interest. Here we present related results from d+Au collisions at PHENIX. We present the observed v2 and discuss the possible origin in the geometry of the collision region. We also present new measurements of the pseudorapidity dependence of the ridge in d+Au collision. Future plans to clarify...

article

p–Pb collisions: Particle production and centrality determination in ALICE

C. Oppedisano

Nuclear Physics A > 2014 > 932 > C > 399-403

Proton–nucleus collisions are an important part of the LHC heavy-ion program for their crucial role in disentangling cold nuclear matter effects from final state effects. Many initial state effects are expected to depend on the number of binary nucleon–nucleon collisions. The centrality determination is needed to provide a geometrical scale to study the underlying collision dynamics. Differently from...

article

Stopping cross sections of atomic layer deposited Al2O3 and Ta2O5 and of Si3N4 for 12C, 16O, 35Cl, 79Br and 127I ions

K. Mizohata, J. Räisänen, J. Keinonen, E. Härkönen, more

Nuclear Inst. and Methods in Physics Research, B > 2013 > 300 > Complete > 1-5

Stopping cross sections of atomic layer deposited Al ₂ O ₃ and Ta ₂ O ₅ and of Si ₃ N ₄ for 0.03–1MeV/u ¹² C, ¹⁶ O, ³⁵ Cl, ⁷⁹ Br and ¹²⁷ I ions have been measured by the transmission technique employing a Time of Flight-Elastic Recoil Detection Analysis (ToF-ERDA) setup. Simulation of experimental slowing down...

article

Search for the critical point and the onset of deconfinement

Christoph Blume

Open Physics > 2012 > 10 > 6 > 1245-1253

A review of the current experimental situation on the search for a critical point in the QCD phase diagram and the onset of deconfinement is given. Ongoing (STAR, NA61), as well as previous (NA49) experiments are presented. Their main results up-to-now are summarized and their findings are put into a general context. The future experimental program (CBM at FAIR, MPD at NICA) is discussed as well.

article

Search for the critical point and the onset of deconfinement

Christoph Blume

Open Physics > 2012 > 10 > 6 > 1245-1253

article

Study of W boson production in PbPb and pp collisions at sNN=2.76 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 715 > 1-3 > 66-87

A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon–nucleon (NN) centre-of-mass energy sNN of 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 μb−1, the number of W→μνμ decays is extracted in the region of muon pseudorapidity |ημ|<2.1 and transverse momentum pTμ>25 GeV/c. Yields of muons found per unit...

article

Measurement of isolated photon production in pp and PbPb collisions at sNN=2.76 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 710 > 2 > 256-277

Isolated photon production is measured in proton–proton and lead–lead collisions at nucleon–nucleon centre-of-mass energies of 2.76 TeV in the pseudorapidity range |η|<1.44 and transverse energies ET between 20 and 80 GeV with the CMS detector at the LHC. The measured ET spectra are found to be in good agreement with next-to-leading-order perturbative QCD predictions. The ratio of PbPb to pp isolated...

article

Search for the critical point and the onset of deconfinement

Christoph Blume

Central European Journal of Physics > 2012 > 10 > 6 > 1245-1253

article

A Hysteresis-Based D-Flip-Flop Design in 28 nm CMOS for Improved SER Hardness at Low Performance Overhead

B. Narasimham, K. Chandrasekharan, Z. Liu, J. K. Wang, more

IEEE Transactions on Nuclear Science > 2012 > 59 > 6-1 > 2847 - 2851

A novel D-Flip-Flop design using hysteresis to improve single-event hardness with low performance overhead is presented. Layout-aware sensitive area simulations were used to estimate the improvement in cross-section for the proposed hysteresis DFF (HDFF) vs. a standard DFF. A test chip with the standard DFF, HDFF, and the DICE FF was designed in a 28 nm CMOS process and exposed to alpha, neutron,...

article

A reaction plane detector for PHENIX at RHIC

E. Richardson, Y. Akiba, N. Anderson, A.A. Bickley, more

Nuclear Inst. and Methods in Physics Research, A > 2011 > 636 > 1 > 99-107

A plastic scintillator paddle detector with embedded fiber light guides and photomultiplier tube readout, referred to as the Reaction Plane Detector (RXNP), was designed and installed in the PHENIX experiment prior to the 2007 run of the Relativistic Heavy Ion Collider (RHIC). The RXNP's design is optimized to accurately measure the reaction plane (RP) angle of heavy-ion collisions, where, for mid-central...

article

Exact (1+1)-dimensional flows of a perfect fluid

Robi Peschanski, Emmanuel N. Saridakis

Nuclear Physics, Section A > 2011 > 849 > 1 > 147-164

We present a general solution of relativistic (1+1)-dimensional hydrodynamics for a perfect fluid flowing along the longitudinal direction as a function of time, uniformly in transverse space. The Khalatnikov potential is expressed as a linear combination of two generating functions with polynomial coefficients of 2 variables. The polynomials, whose algebraic equations are solved, define an infinite-dimensional...

article

Heavy-ion induced chromosomal aberrations: A review

Sylvia Ritter, Marco Durante

Mutation Research - Genetic Toxicology and Environmental Mutagenesis > 2010 > 701 > 1 > 38-46

Heavy-ion radiobiology is attracting increasing interest for its implications in radiation oncology and space radiation protection. The analysis of chromosome aberrations induced by heavy-ions started already in the 1960s, but the new FISH-painting methodologies are revealing unique features of the action of the heavy charged particles. Heavy-ions induce a high fraction of complex-type exchanges,...

article

SEE Characterization of the New RTAX-DSP (RTAX-D) Antifuse-Based FPGA

S Rezgui, P Louris, R Sharmin

IEEE Transactions on Nuclear Science > 2010 > 57 > 6-1 > 3537 - 3546

A comprehensive SEE characterization at high-frequencies (up to 120 MHz) of the new space-flight RTAX-D antifuse-based FPGA family is presented. SEE hardening-by-design techniques in the main FPGA programmable architectures have been implemented. It is evaluated in-beam to show their efficacy in mitigating SETs with little area and time penalty. In particular, SEU/SET mitigation solutions were implemented...

article

Independent Measurement of SET Pulse Widths From N-Hits and P-Hits in 65-nm CMOS

S Jagannathan, M J Gadlage, B L Bhuva, R D Schrimpf, more

IEEE Transactions on Nuclear Science > 2010 > 57 > 6-1 > 3386 - 3391

A novel circuit design for separating single-event transients due to N-hits and P-hits is described. Measurement results obtained from a 65 nm technology using heavy-ions show different dominant mechanisms for charge collection for P-hits and N-hits. The data collected represent the first such separation of SET pulse widths for 65 nm bulk CMOS technology. For low LET particles, N-hit transients are...

article

A study of the cyclotron gas-stopping concept for the production of rare isotope beams

M. Sternberg, G. Savard

Nuclear Inst. and Methods in Physics Research, A > 2008 > 596 > 3 > 257-268

The proposed cyclotron gas-stopping scheme for the efficient thermalization of intense rare isotope beams is examined. Simulations expand on previous studies and expose many complications of such an apparatus arising from physical effects not accounted for properly in previous work. The previously proposed cyclotron gas-stopper geometry is found to have a near null efficiency, but extended simulations...

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Keywords

HEAVY-IONS (26)
BEAM ENERGY SCANS (3)
ONSET OF DECONFINEMENT (3)
QCD CRITICAL POINT (3)
SOFT ERROR (3)
ALPHA PARTICLES (2)
CMOS LOGIC CIRCUITS (2)
CMS (2)
FLIP-FLOP (2)
FLIP-FLOPS (2)
HARDENING-BY-DESIGN (2)
HEAVY-ION BEAMS (2)
ION BEAM EFFECTS (2)
LATCH (2)
NEUTRONS (2)
PHOTONS (2)
PHYSICS (2)
QGP (2)
RADIATION HARDENING (ELECTRONICS) (2)
SER (2)
SINGLE EVENT (2)
SINGLE EVENT UPSETS (2)
Ρ-MESON (1)
127I (1)
12C (1)
16O (1)
35CL (1)
79BR (1)
AL2O3 (1)
ALD (1)
ALICE (1)
ALPHA BEAMS (1)
ALPHA SER (1)
ALPHA-PARTICLE EFFECTS (1)
ANGULAR STRAGGLING (1)
ANTIFUSE-BASED FPGA FAMILY (1)
ANTIFUSE-BASED FPGAS (1)
BINARY SCALING (1)
CENTRALITY (1)
CHARGE-EXCHANGE (1)
CHIRAL ANOMALY (1)
CHROMOSOME ABERRATIONS (1)
CME (1)
CMOS INTEGRATED CIRCUITS (1)
CMOS PROCESS (1)
CMOS TECHNOLOGY (1)
CMW (1)
COLD NUCLEAR MATTER (1)
COMPLEX EXCHANGES (1)
COMPREHENSIVE SEE CHARACTERIZATION (1)
DENSE MATTER IN EQUILIBRIUM (1)
DENSE MATTER OFF-EQUILIBRIUM (1)
DICE FF (1)
DIGITAL SIGNAL PROCESSING (1)
DIRECT PHOTONS (1)
DISPERSION RELATION (1)
DSPS (1)
ELASTIC SCATTERING (1)
ELECTROMAGNETIC PROBES (1)
ELECTRON SPECTRA (1)
ENTROPY DISTRIBUTION (1)
EQUATION OF STATE OF DENSE MATTER (1)
FIELD PROGRAMMABLE GATE ARRAYS (1)
FINFET (1)
FINFETS (1)
GAS COLLISIONS (1)
GAS STOPPING (1)
HARDENING-BY-DESIGN TECHNIQUES (1)
HEAVY-ION THERAPY (1)
HYDRODYNAMICS (1)
HYSTERESIS (1)
HYSTERESIS DFF (1)
HYSTERESIS-BASED D-FLIP-FLOP DESIGN (1)
IMPROVED SER HARDNESS (1)
INTEGRATED CIRCUIT LAYOUT (1)
INTERFERENCE (1)
IRRADIATION HARDENING (1)
LANDAU FLOW (1)
LAYOUT-AWARE SENSITIVE AREA SIMULATIONS (1)
LHC (1)
LOGIC DESIGN (1)
LOW PERFORMANCE OVERHEAD (1)
MAIN FPGA PROGRAMMABLE ARCHITECTURES (1)
MEDIUM MODIFICATION (1)
MOSFETS (1)
N-HITS (1)
NETWORK SYNTHESIS (1)
NEUTRON BEAMS (1)
NEUTRON EFFECTS (1)
NEUTRON SER (1)
NEUTRON STARS (1)
NLO (1)
NON-VOLATILE FPGAS (1)
NOVEL CIRCUIT DESIGN (1)
NUCLEAR COLLISIONS (1)
NUCLEAR ELECTRONICS (1)
NUCLEAR MODIFICATION FACTOR (1)
NUCLEAR RAINBOW (1)
ODS FERRITIC STEELS (1)
OPTICAL MODEL (1)
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Elsevier (16)
ieee (4)
Springer (4)
PSJD (2)

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Search results

Direct photon measurements in pp and Pb–Pb collisions with the ALICE experiment

Evidence for Effects of the Chiral Anomaly: Status and Future

Hardening of ODS ferritic steels under irradiation with high-energy heavy ions

The equation of state of hot, dense matter and neutron stars

Bias Dependence of Single-Event Upsets in 16 nm FinFET D-Flip-Flops

d+Au hadron correlation measurements from PHENIX

p–Pb collisions: Particle production and centrality determination in ALICE

Stopping cross sections of atomic layer deposited Al2O3 and Ta2O5 and of Si3N4 for 12C, 16O, 35Cl, 79Br and 127I ions

Search for the critical point and the onset of deconfinement

Search for the critical point and the onset of deconfinement

Study of W boson production in PbPb and pp collisions at sNN=2.76 TeV

Measurement of isolated photon production in pp and PbPb collisions at sNN=2.76 TeV

Search for the critical point and the onset of deconfinement

A Hysteresis-Based D-Flip-Flop Design in 28 nm CMOS for Improved SER Hardness at Low Performance Overhead

A reaction plane detector for PHENIX at RHIC

Exact (1+1)-dimensional flows of a perfect fluid

Heavy-ion induced chromosomal aberrations: A review

SEE Characterization of the New RTAX-DSP (RTAX-D) Antifuse-Based FPGA

Independent Measurement of SET Pulse Widths From N-Hits and P-Hits in 65-nm CMOS

A study of the cyclotron gas-stopping concept for the production of rare isotope beams

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