scholarly journals Bruno Touschek: From Betatrons to Electron–Positron Colliders

2015 ◽  
Vol 08 ◽  
pp. 269-290
Author(s):  
Carlo Bernardini ◽  
Giulia Pancheri ◽  
Claudio Pellegrini
Keyword(s):  
World War Ii ◽  
Storage Ring ◽  
High Energy Physics ◽  
High Energy ◽  
Storage Rings ◽  
European Culture ◽  
Electron Positron ◽  
Radiation Sources ◽  
Beam Instabilities ◽  
Energy Physics

Bruno Touschek’s life as a physicist spanned the period from World War II to the 1970s. He was a key figure in the developments of electron–positron colliders and storage rings, and made important contributions to theoretical high energy physics. Storage rings, initially developed for high energy physics, are being widely used in many countries as synchrotron radiation sources and are a tool for research in physics, chemistry, biology, environmental sciences and cultural heritage studies. We describe Touschek’s life in Austria, where he was born, in Germany, where he participated in the construction of a betatron during WWII, and in Italy, where he proposed and led to completion the first electron–positron storage ring in 1960, in Frascati. We highlight how his central European culture influenced his lifestyle and work, and his main contributions to physics, such as the discovery of the Touschek effect and beam instabilities in the larger storage ring ADONE.

scholarly journals Interactions of Beams with Surroundings

2020 ◽  
pp. 183-203
Author(s):  
M. Brugger ◽  
H. Burkhardt ◽  
B. Goddard ◽  
F. Cerutti ◽  
R. G. Alia
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Fixed Target ◽  
Fixed Target Experiments ◽  
Secondary Particles ◽  
Radiation Sources ◽  
Residual Gas ◽  
The Impact ◽  
High Energy Particles ◽  
Energy Physics

AbstractWith the exceptions of Synchrotron Radiation sources, beams of accelerated particles are generally designed to interact either with one another (in the case of colliders) or with a specific target (for the operation of Fixed Target experiments, the production of secondary beams and for medical applications). However, in addition to the desired interactions there are unwanted interactions of the high energy particles which can produce undesirable side effects. These interactions can arise from the unavoidable presence of residual gas in the accelerator vacuum chamber, or from the impact of particles lost from the beam on aperture limits around the accelerator, as well as the final beam dump. The wanted collisions of the beams in a collider to produce potentially interesting High Energy Physics events also reduces the density of the circulating beam and can produce high fluxes of secondary particles.

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.

scholarly journals PROJECT OF A BEAMLINE FOR THE NESTOR STORAGE RING LINAC TO PROVIDE NUCLEAR PHYSICS RESEARCH

2021 ◽  
pp. 38-44
Author(s):  
V.V. Mytrochenko ◽  
S.O. Perezhogin ◽  
V.A. Kushnir ◽  
V.B. Ganenko ◽  
M.I. Ayzatsky ◽  
...  
Keyword(s):  
Storage Ring ◽  
Nuclear Physics ◽  
High Energy Physics ◽  
High Energy ◽  
Particle Energy ◽  
Electron Gun ◽  
Dynamics Simulation ◽  
Transport Line ◽  
Beam Dynamics Simulation ◽  
Energy Physics

The results of self-consistent beam dynamics simulation are presented for the linac of the NESTOR storage ring. Consideration is given to the influence of particle energy change at the output of the electron gun during the current pulse. The obtained data have formed the basis for the computation of the beam transport line for research in the field of high energy physics.

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.

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