Raphael Noel Tieulent

Diagnostics: Chapter 8 of the special issue: on the path to tokamak burning plasma operation

Didier Mazon, G. Vayakis, Michael J. Walsh, Gunsu S. Yun et autres

Abstract This chapter presents the activity conducted by the ITPA topical group (TG) on Diagnostics over about the last 15 years. Following a general introduction of the ITER Diagnostics led by their measurement roles, the document is organized in several subchapters detailing …

fr, kr, us, jp, pl, it, se, es, hu, in, de, dk, ru, gb, cn, cz, be, ch (code pays fourni par la source)

Low-mass vector-meson production at forward rapidity in $p$$+$$p$ and Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$~GeV

U. Rajendra Acharya, A Adare, C. Aidala, Y. Akiba et autres

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson ($ω+ρ$ and $ϕ$) production through the dimuon decay channel at forward rapidity $(1.2<|\mbox{y}|<2.2)$ in $p$$+$$p$ and Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$~GeV. The low-mass vector-meson yield and nuclear-modification factor were measured …

X-ray tomographic measurement and modeling for inferring tungsten impurity distribution in WEST plasmas: A review

Didier Mazon, Maryna Chernyshova, Axel Jardin, Yves Peysson et autres

Since the advent of tungsten walls in ITER, the problem of precisely reconstructing the distribution of tungsten (W) concentration in the plasma has become all the more relevant. Among the different possible approaches, those using x-ray measurements seem particularly promising. Indeed, essential …

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Advanced Simulation of ITER Core X-ray Crystal Spectroscopy

Zhifeng Cheng, Wei Yan, Zhongyong Chen, N. Pablant et autres

X-Ray Simulation Analysis (XRSA) is an analytical ray-tracing mixed code developed specifically for the ITER Core X-Ray Crystal Spectroscopy (XRCS-Core) diagnostic, which employs a dual-reflection configuration incorporating multiple pre-reflectors made of Highly Oriented Pyrolytic Graphite (HOPG) and spherically curved analyzing crystals. The …

cn, fr, us, gb (code pays fourni par la source)

Azimuthal anisotropy of direct photons in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV

U. Rajendra Acharya, Andrew Marshall Adare, C. Aidala, Y. Akiba et autres

The PHENIX experiment at the Relativistic Heavy Ion Collider measured the second Fourier component $v_2$ of the direct-photon azimuthal anisotropy at midrapidity in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. The results are presented in 10\% wide bins of collision centrality and cover the …

Disentangling Centrality Bias and Final-State Effects in the Production of High- p T Neutral Pions Using Direct Photon in d + Au Collisions at s N N = 200 GeV

Nour Jalal Abdulameer, U. Acharya, C. Aidala, Y. Akiba et autres

PHENIX presents a simultaneous measurement of the production of direct $\ensuremath{\gamma}$ and ${\ensuremath{\pi}}^{0}$ in $d+\mathrm{Au}$ collisions at $\sqrt{{s}_{NN}}=200\text{ }\text{ }\mathrm{GeV}$ over a ${p}_{T}$ range of 7.5 to $18\text{ }\text{ }\mathrm{GeV}/c$ for different event samples selected by event activity, i.e., charged-particle multiplicity detected …

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Corrigendum to “Search for a common baryon source in high-multiplicity pp collisions at the LHC” [Phys. Lett. B 811 (2020) 135849]

S. Acharya, D. Adamová, A. Adler, J. Adolfsson et autres

In the original paper [1], the relative distance ⃗r∗ for p–p pairs composed of one primary and one secondary (i.e. coming from resonance decay) proton was not calculated correctly. Specifically, Eq. (5) in the original paper for the scenario in which one …

Performance characterization of x-ray crystal spectroscopy highly oriented pyrolytic graphite reflectors based on x-ray diffractometry experiments

Dian Lu, Zhifeng Cheng, Tian-Lei Zhao, Lan Gao et autres

The use of Highly Oriented Pyrolytic Graphite (HOPG) reflectors is often proposed in the design of X-ray Crystal Spectroscopy (XCS) diagnostic systems for the next-generation tokamak devices, including the ITER project. This study introduces an experimental study based on the X-Ray Diffractometry …

cn, fr, us (code pays fourni par la source)

Jet modification via π 0 -hadron correlations in Au + Au collisions at s N N = 200 GeV

Nour Jalal Abdulameer, U. Rajendra Acharya, Andrew Marshall Adare, S. Afanasiev et autres

High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4--12 $\mathrm{GeV}/c$ and 0.5--7 $\mathrm{GeV}/c$, respectively, have been measured by the PHENIX experiment …

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Measurement of elliptic flow of J$/ψ$ in $\sqrt{s_{_{NN}}}=200$ GeV Au$+$Au collisions at forward rapidity

U. Acharya, Andrew Marshall Adare, C. Aidala, Y. Akiba et autres

We report the first measurement of the azimuthal anisotropy of J$/ψ$ at forward rapidity ($1.2<|η|<2.2$) in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV at the Relativistic Heavy Ion Collider. The data were collected by the PHENIX experiment in 2014 and 2016 with integrated luminosity …

Measurements at forward rapidity of elliptic flow of charged hadrons and open-heavy-flavor muons in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV

U. Acharya, Andrew Marshall Adare, C. Aidala, Y. Akiba et autres

We present the first forward-rapidity measurements of elliptic anisotropy of open-heavy-flavor muons at the BNL Relativistic Heavy Ion Collider. The measurements are based on data samples of Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV collected by the PHENIX experiment in 2014 and 2016 with …

hu, us, es, fr, jp, ru, mx, kr, cz, in (code pays fourni par la source)

Multiplicity dependent $J/ψ$ and $ψ(2S)$ production at forward and backward rapidity in $p$$+$$p$ collisions at $\sqrt{s}=200$ GeV

U. Rajendra Acharya, C. Aidala, Y. Akiba, Marcus Alfred et autres

The $J/ψ$ and $ψ(2S)$ charmonium states, composed of $c\bar{c}$ quark pairs and known since the 1970s, are widely believed to serve as ideal probes to test quantum chromodynamics in high-energy hadronic interactions. However, there is not yet a complete understanding of the …