R&D steps of a 12-T common coil dipole magnet for SPPC pre-study

2016 ◽  
Vol 31 (33) ◽  
pp. 1644018 ◽  
Author(s):  
Chengtao Wang ◽  
Kai Zhang ◽  
Qingjin Xu
Keyword(s):  
High Energy Physics ◽  
Optimization Method ◽  
High Energy ◽  
Dipole Magnet ◽  
Proton Proton ◽  
Protection Method ◽  
Electron Positron ◽  
The Common ◽  
Beijing China ◽  
Energy Physics

IHEP (the Institute of High Energy Physics, Beijing, China) has started the R&D of high field accelerator magnet technology from 2014 for recently proposed CEPC-SppC (Circular Electron Positron Collider, Super proton–proton Collider) project. The conceptual design study of a 20-T dipole magnet is ongoing with the common coil configuration, and a 12-T model magnet will be fabricated in the next two years. A 3-step R&D process has been proposed to realize this 12-T common-coil model magnet: first, a 12-T subscale magnet will be fabricated with Nb3Sn and NbTi superconductors to investigate the fabrication process and characteristics of Nb3Sn coils, then a 12-T subscale magnet will be fabricated with only Nb3Sn superconductors to test the stress management method and quench protection method of Nb3Sn coils; the final step is fabricating the 12-T common-coil dipole magnet with HTS (YBCO) and Nb3Sn superconductors to test the field optimization method of the HTS and Nb3Sn coils. The characteristics of these R&D steps will be introduced in the paper.

Electromagnetic design of a 12 T twin-aperture dipole magnet

2017 ◽  
Vol 32 (34) ◽  
pp. 1746008 ◽  
Author(s):  
Chengtao Wang ◽  
Ershuai Kong ◽  
Da Cheng ◽  
Yingzhe Wang ◽  
Kai Zhang ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Mechanical Design ◽  
High Energy ◽  
Dipole Field ◽  
Block Type ◽  
Dipole Magnet ◽  
Proton Proton ◽  
Electromagnetic Design ◽  
Beijing China ◽  
Energy Physics

A 12 T twin-aperture subscale magnet is under development at the Institute of High Energy Physics (IHEP, Beijing, China), as the R&D of high-field accelerator magnet technology for SPPC (Super Proton–Proton Collider) pre-study. Four NbTi coils and two Nb3Sn coils will be fabricated firstly, to provide a 12 T dipole field in two apertures with the load line ratio of 20% at 4.2 K. After that, the HTS (ReBCO and Bi-2212) coils will be inserted between the Nb3Sn coils to realize a higher dipole field. The ReBCO coils with the block-type configuration will be inserted between the Nb3Sn coils with common-coil configuration (Combined Common-coil and Block type configuration, CCB), to make the broad plane of the tape parallel with the magnetic flux and maximize current-carrying capacity. The electromagnetic design, mechanical design and quench protection design have been completed. The fabrication is ongoing. The magnet will be assembled and tested in 2017.

Experiments on proton-proton interactions at the Institute of High-Energy Physics, Serpukhov, U. S. S. R

1973 ◽  
Vol 335 (1603) ◽  
pp. 421-430
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
High Energy Physics ◽  
Bubble Chamber ◽  
High Energy ◽  
Hydrogen Bubble ◽  
Hydrogen Bubble Chamber ◽  
Proton Proton ◽  
Total Cross Sections ◽  
Energy Physics

A summary of the work carried out at the Institute for High-Energy Physics, Serpukhov, U. S. S. R., on proton-proton interactions at energies between 10 and 70 GeV is given. The experiments comprise studies of small angle elastic scattering, of total cross-sections and of interactions in a hydrogen bubble chamber.

scholarly journals All-optical quasi-monoenergetic GeV positron bunch generation by twisted laser fields

2022 ◽  
Vol 5 (1) ◽  
Author(s):  
Jie Zhao ◽  
Yan-Ting Hu ◽  
Yu Lu ◽  
Hao Zhang ◽  
Li-Xiang Hu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electric Fields ◽  
High Energy Physics ◽  
Energetic Electron ◽  
Three Dimensional ◽  
High Energy ◽  
Electron Positron ◽  
All Optical ◽  
Positron Bunch ◽  
Energy Physics

AbstractGeneration of energetic electron-positron pairs using multi-petawatt (PW) lasers has recently attracted increasing interest. However, some previous laser-driven positron beams have severe limitations in terms of energy spread, beam duration, density, and collimation. Here we propose a scheme for the generation of dense ultra-short quasi-monoenergetic positron bunches by colliding a twisted laser pulse with a Gaussian laser pulse. In this scheme, abundant γ-photons are first generated via nonlinear Compton scattering and positrons are subsequently generated during the head-on collision of γ-photons with the Gaussian laser pulse. Due to the unique structure of the twisted laser pulse, the positrons are confined by the radial electric fields and experience phase-locked-acceleration by the longitudinal electric field. Three-dimensional simulations demonstrate the generation of dense sub-femtosecond quasi-monoenergetic GeV positron bunches with tens of picocoulomb (pC) charge and extremely high brilliance above 1014 s−1 mm−2 mrad−2 eV−1, making them promising for applications in laboratory physics and high energy physics.

scholarly journals Particle identification for Higgs physics at future electron–positron collider

2020 ◽  
Vol 35 (15n16) ◽  
pp. 2041013 ◽  
Author(s):  
Wei-Ming Yao
Keyword(s):  
Higgs Physics ◽  
Yukawa Coupling ◽  
High Energy Physics ◽  
Flavor Physics ◽  
High Energy ◽  
Particle Identification ◽  
Heavy Flavor ◽  
Electron Positron ◽  
Physics Experiments ◽  
Energy Physics

Particle identification (PID) plays a key role in heavy-flavor physics in high-energy physics experiments. However, its impact on Higgs physics is still not clear. In this note, we will explore some of the potential of PID to improve the identification of heavy-flavor jets by using identified charged kaons in addition to the traditional vertexing information. This could result in a better measurement of the Higgs-charm Yukawa coupling at the future [Formula: see text] colliders.

BEPC, THE BEIJING ELECTRON-POSITRON COLLIDER

1987 ◽  
Vol 02 (06) ◽  
pp. 1707-1725 ◽  
Author(s):  
MINGHAN YE ◽  
ZHIPENG ZHENG
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Particle Accelerator ◽  
Current Status ◽  
High Energy Particle ◽  
Energy Particle ◽  
Republic Of China ◽  
Electron Positron ◽  
Physics Experiments ◽  
Energy Physics

BEPC, which is the first high energy particle accelerator to be built in the People’s Republic of China, is being constructed in Beijing. It consists of four main subsystems: a 1.4 GeV electron-positron linac, a 2.2–2.8 GeV storage ring, a magnetic spectrometer for high energy physics experiments, and synchrotron radiation facilities. All its components are described here in detail, and the current status of the construction is reported.

scholarly journals Software framework for the Super Charm-Tau factory detector project

2021 ◽  
Vol 251 ◽  
pp. 03017
Author(s):  
Maria Belozyorova ◽  
Dmitry Maksimov ◽  
Georgiy Razuvaev ◽  
Andrey Sukharev ◽  
Vitaly Vorobyev ◽  
...  
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Software Framework ◽  
High Luminosity ◽  
Collision Point ◽  
Software Packages ◽  
Electron Positron ◽  
New Ideas ◽  
Near Future ◽  
Energy Physics

The project of Super Charm-Tau (SCT) factory — a high-luminosity electron-positron collider for studying charmed hadrons and tau lepton — is proposed by Budker INP. The project implies single collision point equipped with a universal particle detector. The Aurora software framework has been developed for the SCT detector. It is based on trusted and widely used in high energy physics software packages, such as Gaudi, Geant4, and ROOT. At the same time, new ideas and developments are employed, in particular the Aurora project benefits a lot from the turnkey software for future colliders (Key4HEP) initiative. This paper describes the first release of the Aurora framework, summarizes its core technologies, structure and roadmap for the near future.

Particle Colliders for High Energy Physics

2008 ◽  
Vol 01 (01) ◽  
pp. 99-120 ◽  
Author(s):  
D. A. Edwards ◽  
H. T. Edwards
Keyword(s):  
Large Hadron Collider ◽  
Radio Frequency ◽  
High Energy Physics ◽  
Technology Development ◽  
Hadron Collider ◽  
High Energy ◽  
Half Century ◽  
Electron Positron ◽  
Proton Rings ◽  
Energy Physics

The purpose of this article is to outline the development of particle colliders from their inception just over a half-century ago, expand on today's achievements, and remark on the potential of coming years. There are three main sections, entitled "Past," "Present," and "Future." "Past" starts with the electron and electron–positron colliders of the 1950s, continues through the proton rings at CERN, and concludes with LEP. Technology development enters the section Present, "which includes not only the major colliders in both the lepton and baryon worlds, but also recognition of the near-immediate entry of the Large Hadron Collider. "Future" looks at the next potential steps, the most prominent of which is an electron–positron partner to the LHC, but there are other very interesting propositions undergoing exploration that include muon storage and even conceivably departure from reliance on radio frequency acceleration.

Proton–Proton and Proton–Antiproton Colliders

2014 ◽  
Vol 07 ◽  
pp. 9-33 ◽  
Author(s):  
Walter Scandale
Keyword(s):  
High Energy Physics ◽  
Hadron Collider ◽  
High Energy ◽  
Accelerator Physics ◽  
Proton Antiproton ◽  
Proton Proton ◽  
Ion Collisions ◽  
Polarized Protons ◽  
Part Time ◽  
Energy Physics

In the last five decades, proton–proton and proton–antiproton colliders have been the most powerful tools for high energy physics investigations. They have also deeply catalyzed innovation in accelerator physics and technology. Among the large number of proposed colliders, only four have really succeeded in becoming operational: the ISR, the SppbarS, the Tevatron and the LHC. Another hadron collider, RHIC, originally conceived for ion–ion collisions, has also been operated part-time with polarized protons. Although a vast literature documenting them is available, this paper is intended to provide a quick synthesis of their main features and key performance.

scholarly journals Quantum-inspired machine learning on high-energy physics data

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Timo Felser ◽  
Marco Trenti ◽  
Lorenzo Sestini ◽  
Alessio Gianelle ◽  
Davide Zuliani ◽  
...  
Keyword(s):  
Machine Learning ◽  
Learning Process ◽  
High Energy Physics ◽  
Hadron Collider ◽  
Fast Response ◽  
High Energy ◽  
Proton Proton ◽  
Tensor Network ◽  
Many Body Systems ◽  
Energy Physics

AbstractTensor Networks, a numerical tool originally designed for simulating quantum many-body systems, have recently been applied to solve Machine Learning problems. Exploiting a tree tensor network, we apply a quantum-inspired machine learning technique to a very important and challenging big data problem in high-energy physics: the analysis and classification of data produced by the Large Hadron Collider at CERN. In particular, we present how to effectively classify so-called b-jets, jets originating from b-quarks from proton–proton collisions in the LHCb experiment, and how to interpret the classification results. We exploit the Tensor Network approach to select important features and adapt the network geometry based on information acquired in the learning process. Finally, we show how to adapt the tree tensor network to achieve optimal precision or fast response in time without the need of repeating the learning process. These results pave the way to the implementation of high-frequency real-time applications, a key ingredient needed among others for current and future LHCb event classification able to trigger events at the tens of MHz scale.

scholarly journals Small systems at the LHC

2018 ◽  
Vol 171 ◽  
pp. 11003 ◽  
Author(s):  
Roberto Preghenella
Keyword(s):  
High Energy Physics ◽  
Heavy Ion ◽  
High Energy ◽  
Proton Proton ◽  
Small Systems ◽  
Proton Collisions ◽  
Strangeness Enhancement ◽  
Proton Proton Collisions ◽  
Energy Physics ◽  
Selection Of

In these proceedings, I report on a selection of recent LHC results in small systems from ALICE [1], ATLAS [2] and CMS [3] experiments. Due to the fact that the investigation of QCD in small systems at high multiplicity is becoming an increasingly large subject, interesting the heavy-ion community and more in general the high-energy physics community, not all the related topics can be discussed in this paper. The focus will be given to some of the measurements addressing the physics of collective phenomena in small systems and to the recent results on strangeness enhancement in proton-proton collisions. The reader must be informed that a large number of interesting results did not find space in the discussion reported here.

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