NFDI4DS | UHH-SEMS - Publication Details

H. Kou

ORCID: 0000-0003-4927-243X

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A5010457445

Research Areas

Particle physics theoretical and experimental studies
High-Energy Particle Collisions Research
Quantum Chromodynamics and Particle Interactions
Particle Detector Development and Performance
Radiation Detection and Scintillator Technologies
Quantum, superfluid, helium dynamics
Dark Matter and Cosmic Phenomena
High-pressure geophysics and materials
Superconducting Materials and Applications
Nuclear physics research studies
Neutrino Physics Research
Atomic and Subatomic Physics Research
Advanced Algorithms and Applications
Geophysics and Gravity Measurements
Medical Imaging Techniques and Applications
Muon and positron interactions and applications
Neural Networks and Applications
Semiconductor materials and devices
Photonic and Optical Devices
Spectral Theory in Mathematical Physics
Plasma Diagnostics and Applications
Radioactive Decay and Measurement Techniques
Atomic and Molecular Physics
Magnetic Field Sensors Techniques
Astrophysical Phenomena and Observations

Nanjing University of Posts and Telecommunications
2025

Institute of High Energy Physics
2019-2024

Bulgarian Academy of Sciences
2024

Institute of High Energy Physics
2023

Chinese Academy of Sciences
2022

Tokyo Institute of Technology
2010-2021

AviChina Industry & Technology (China)
2021

University of Chinese Academy of Sciences
2018-2020

CMS iRPC FEB development and validation

OPENALEX - Publications

M. Gouzevitch A. Samalan M. Tytgat M. El Sawy G. A. Alves and 95 more

In view of the High Luminosity upgrade CERN LHC, forward CMS Muon spectrometer will be extended with two new stations improved Resistive Plate Chambers (iRPC) covering pseudorapidity range from 1.8 to 2.4. Compared present RPC system, gap thickness is reduced lower avalanche charge, and an innovative 2D strip readout geometry proposed. These improvements allow iRPC detector cope higher background rates. A Front-End-Board (FEB) designed signals a threshold as low 30 fC integrated Time Digital...

10.1016/j.nima.2024.169400 article EN cc-by Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2024-04-27

Machine learning approach to CMS RPC HV scan data analysis

OPENALEX - Publications

Marieta Pehlivanova M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170367 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-03-01

An Improved Self-Organizing Map (SOM) Based on Virtual Winning Neurons

OPENALEX - Publications

Fan Xiaoliang Shaodong Zhang Xuefeng Xue Rui Jiang Suohai Fan and 1 more

Self-Organizing Map (SOM) neural networks can project complex, high-dimensional data onto a two-dimensional plane for visualization, enabling an intuitive understanding of the distribution and symmetric structures such data, thereby facilitating clustering anomaly detection complex data. However, this algorithm is sensitive to initial weight matrix suffers from insufficient feature extraction. To address these issues, paper proposes improved SOM based on virtual winning neurons...

10.3390/sym17030449 article EN Symmetry 2025-03-17

CMS RPC L1 Trigger clustering at CMSSW

OPENALEX - Publications

C. Giordano M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170363 article cc-by Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-03-01

CMS RPC performance and operation in LHC Run 3

OPENALEX - Publications

M. Shopova M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170467 article EN cc-by-nc-nd Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Performance and longevity of CO2 based mixtures in CMS improved Resistive Plate Chambers in the HL-LHC environment

OPENALEX - Publications

J.P. Pinheiro M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170451 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Innovative resistive plate chambers for the CMS phase–2 upgrade: Project summary, construction, and quality assurance

OPENALEX - Publications

J. Vandenbroeck M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170453 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Preliminary aging studies of improved RPC gaps operated with HFO based mixtures

OPENALEX - Publications

Z. Eve Kofi M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170341 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Design and qualification of the optical fiber system for the CMS RPC Link System

OPENALEX - Publications

Andrés Cabrera M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170491 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

CMS RPC non-physics event data automation ideology

OPENALEX - Publications

A. Dimitrov M. Tytgat K. Mota Amarilo A. Samalan K. Skovpen and 95 more

10.1016/j.nima.2025.170506 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

iRPC Front End electronics cooling system in CMS

OPENALEX - Publications

O. Kemularia M. Gouzevitch M. Tytgat K. Mota Amarilo A. Samalan and 95 more

10.1016/j.nima.2025.170490 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

CMS RPC efficiency studies using Tag-and-Probe method in LHC Run 3

OPENALEX - Publications

Jae Y. Shin S. Yang J. Goh M. Tytgat K. Mota Amarilo and 95 more

10.1016/j.nima.2025.170492 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Gas gaps and chambers quality control of improved Resistive Plate Chambers

OPENALEX - Publications

Magdi A. Ali B. ElMahdy Fernando Enrique Neri Huerta M. Tytgat K. Mota Amarilo and 95 more

10.1016/j.nima.2025.170484 article EN cc-by-nc-nd Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Novel ideas for CMS L1 trigger in HL-LHC using RPC ultimate timing performance

OPENALEX - Publications

Andrés Cabrera E. Asilar M. Tytgat K. Mota Amarilo A. Samalan and 95 more

10.1016/j.nima.2025.170477 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2025-04-01

Observation of a K¯NN bound state in the He3(K−<mml:mo…

OPENALEX - Publications

T. Yamaga S. Ajimura H. Asano G. Beer H. Bhang and 64 more

We have performed an exclusive measurement of the K−+He3→Λpn reaction at incident kaon momentum 1GeV/c. In Λp invariant mass spectrum, a clear peak was observed below threshold K¯+N+N, as signal kaonic nuclear bound state, K¯NN. The binding energy, decay width, and S-wave Gaussian form factor this state were to be BK=42±3(stat.)−4+3(syst.)MeV, ΓK=100±7(stat.)−9+19(syst.)MeV, QK=383±11(stat.)−1+4(syst.)MeV/c, respectively. total production cross section K¯NN, determined by its mode,...

10.1103/physrevc.102.044002 article EN Physical review. C 2020-10-14

Search for the deeply bound K-pp state from the semi-inclusive forward-neutron spectrum in the in-flight K- reaction on helium-3

OPENALEX - Publications

T. Hashimoto S. Ajimura G. Beer H. Bhang M. Bragadireanu and 62 more

An experiment to search for the $K^-pp$ bound state was performed via in-flight $^3$He($K^-,n)$ reaction using 5.3 $\times$ $10^9$ kaons at 1 GeV/$c$ J-PARC hadron experimental facility. In semi-inclusive neutron missing-mass spectrum $\theta_{n}^{lab}=0^\circ$, no significant peak observed in region corresponding binding energy larger than 80 MeV, where a bump structure has been reported $\Lambda p$ final different reactions. Assuming be isotropically decaying into p$, mass-dependent upper...

10.1093/ptep/ptv076 article EN cc-by Progress of Theoretical and Experimental Physics 2015-06-16

Research and development of time resolution and time reference adjustment for CMS improved resistive plate chambers (iRPCs)

OPENALEX - Publications

J. Song J. Zhao Q. Hou W. Diao P. Cao and 95 more

10.1007/s41605-024-00473-w article EN Radiation Detection Technology and Methods 2024-07-03

Measurement of the background in the CMS muon detector in $${p}{p}$$-collisions at $$\sqrt{s} = 13$$ $$\,\text {Te}\hspace{-.08em}\text {V}$$

OPENALEX - Publications

M. Tytgat A. Muhammad G. De Lentdecker J. Jaramillo L. Moureaux and 95 more

Abstract The CMS detector, including its muon system, has been operating at the CERN LHC in increasingly challenging conditions for about 15 years. detector was designed to provide excellent triggering and track reconstruction muons produced proton–proton collisons an instantaneous luminosity ( $$\mathcal {L}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>L</mml:mi> </mml:math> ) of $$1 \times 10^{34}$$ <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>×</mml:mo> <mml:msup>...

10.1140/epjc/s10052-024-13077-x article EN cc-by The European Physical Journal C 2024-09-27

Improved-RPC for the CMS muon system upgrade for the HL-LHC

OPENALEX - Publications

P. Kumari K.S. Lee A. Gelmi K. Shchablo A. Samalan and 95 more

During Phase-2 of the LHC, known as High Luminosity LHC (HL-LHC), accelerator will increase its instantaneous luminosity to 5 × 1034 cm−2 s−1, delivering an integrated 3000 fb−1 over 10 years operation starting from 2027. In view HL-LHC, CMS muon system be upgraded sustain efficient triggering and reconstruction performance. Resistive Plate Chambers (RPCs) serve dedicated detectors for due their excellent timing resolution, extend acceptance up pseudorapidity values |η|=2.4. Before Long...

10.1088/1748-0221/15/11/c11012 article EN Journal of Instrumentation 2020-11-16

A Search for Deeply-bound Kaonic Nuclear States by In-flight $^3$He($K^-, n$) Reaction at J-PARC

OPENALEX - Publications

F. Sakuma S. Ajimura G. Beer H. Bhang M. Bragadireanu and 66 more

Data on the production of η mesons light nuclei near threshold are surveyed.The photoproduction 3 He and elastic scattering from this nucleus modelled in a multiple scheme positions poles both here neighbouring studied an optical potential approach.The 7 Li is compared to that within cluster model.The decay η-mesic through pion or nucleon emission also considered.

10.5506/aphyspolb.45.767 article EN Acta Physica Polonica B 2014-01-01

"$\mathbf{{\textit K^-}{\textit p}{\textit p}}$", a ${\overline{K}}$-Meson Nuclear Bound State, Observed in $^{3}{\rm He}({K^-}, Λ p)n$ Reactions

OPENALEX - Publications

J-PARC E Collaboration S. Ajimura H. Asano G. Beer C. Berucci and 65 more

We observed a distinct peak in the $\Lambda p$ invariant mass spectrum of $^{3}{\rm He}(K^-, \, \Lambda p)n$, well below threshold $m_K + 2 m_p$. By selecting relatively large momentum-transfer region $q = 350 \sim 650$ MeV/$c$, one can clearly separate from quasi-free process, $\overline{K}N \rightarrow \overline{K}N$ followed by non-resonant absorption two spectator-nucleons $\overline{K}NN N $. found that simplest fit to gives us Breit-Wigner pole position at $B_{\rm {\it Kpp}} 47 \pm 3...

10.48550/arxiv.1805.12275 preprint EN other-oa arXiv (Cornell University) 2018-01-01

R &D of back-end electronics for improved resistive plate chambers for the phase 2 upgrade of the CMS end-cap muon system

OPENALEX - Publications

H. Kou Z.-A. Liu J. Zhao Jiazheng Song Q. Hou and 95 more

10.1007/s41605-022-00340-6 article EN Radiation Detection Technology and Methods 2022-08-24

THE SEARCH FOR DEEPLY BOUND KAONIC NUCLEAR STATES AT J-PARC

OPENALEX - Publications

T. Hiraiwa S. Ajimura G. Beer H. Bhang M. Bragadireanu and 57 more

The J-PARC E15 experiment aims to search for the lightest kaonic nuclear states, namely K - pp, using in-flight (K , n) reaction on 3 He . In this experiment, missing mass in and invariant of decay such as pp → Λp pπ p will be measured simultaneously. article, experimental feature present status are presented.

10.1142/s0217751x11052037 article EN International Journal of Modern Physics A 2011-02-10

A DAQ Upgrade Solution for Belle II Experiment

OPENALEX - Publications

Zhi Liu Jia Tao J. Zhao H. Kou P. Cao and 5 more

While the current Belle II data acquisition (DAQ) system has proven to be reliable in first collisions delivered since May 2018, an upgrade increase bandwidth of readout is foreseen deployed over next few years for higher target luminosity SuperKEKB running. Currently, front-end electronics (FEE) individual subdetectors are connected online event building via a unified optical link called Belle2Link, offering unidirectional as well bidirectional slow control access. The FEE received by...

10.1109/tns.2020.3006501 article EN IEEE Transactions on Nuclear Science 2020-07-02

A Search for Deeply Bound Kaonic Nuclear States at J-PARC

OPENALEX - Publications

S. Ajimura G. Beer H. Bhang M. Bragadireanu P. Buehler and 61 more

10.1007/s00601-012-0552-6 article EN Few-Body Systems 2013-03-22

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