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The proposed Circular Electron Positron Collider (CEPC), with a center-of-mass energy $\sqrt{s} = 240$ GeV, will primarily serve as a Higgs factory. At the same time, it can offer good opportunities to search for new physics phenomena at…

High Energy Physics - Experiment · Physics 2022-01-26 Jia-Rong Yuan , Hua-Jie Cheng , Xu-Ai Zhuang

We discuss the basis of polarized positron production by low energy polarized electrons. Efficiency of conversion ~0.1-1% might be interesting for CEBAF facility and ILC as well.

Accelerator Physics · Physics 2016-10-18 Alexander Mikhailichenko

The concept of a small-scale, pulsed-proton accelerator based compact ultracold neutron (UCN) source is presented. The essential idea of the compact UCN source is to enclose a volume of superfluid $^{4}\mathrm{He}$ converter with a…

Instrumentation and Detectors · Physics 2021-03-17 Yun Chang Shin , W. Michael Snow , David V. Baxter , Chen-Yu Liu , Dongok Kim , Younggeun Kim , Yannis K. Semertzidis

It is proposed to produce highly charged ions in the local potential traps formed by the rippled electron beam in a focusing magnetic field. In this method, the extremely high electron current densities can be attained on short length of…

Plasma Physics · Physics 2015-03-18 V. P. Ovsyannikov , A. V. Nefiodov

A low energy proton source for non-neutral plasma experiments was developed. Electrons from a hot filament ionize H$_2$ gas inside a geometrically compensated Penning trap to produce protons via dissociative ionization. A rotating wall…

Instrumentation and Detectors · Physics 2023-10-04 A. Weiser , A. Lanz , E. D. Hunter , M. C. Simon , E. Widmann , D. J. Murtagh

The Polarized Electrons for Polarized Positrons experiment at the injector of the Continuous Electron Beam Accelerator Facility has demonstrated for the first time the efficient transfer of polarization from electrons to positrons produced…

A previously unexplored experimental scheme is presented for generating low-divergence, ultra-dense, relativistic, electron-positron beams using 400 GeV/c protons available at facilities such as HiRadMat and AWAKE at CERN. Preliminary…

A new compact electron cyclotron resonance (ECR) ion source for low current applications, designed and built in-house at the University of the Basque Country (UPV/EHU) is presented. The source was designed to use as many commercially…

We present a scheme for the generation of a high polarization positron beam with continous wave (CW) bunch structure for the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Laboratory (JLab). The positrons are created in…

This paper describes a comprehensive experimental study on viability and prospects for the measurement of electroweak observables in $e^{+}e^{-}\rightarrow b\bar{b}$ and $e^{+}e^{-}\rightarrow c\bar{c}$ processes at the International Linear…

High Energy Physics - Experiment · Physics 2023-12-20 A. Irles , R. Pöschl , F. Richard

A technique for measuring high-energy electrons using Si detectors of various thicknesses that are much smaller than the range of the examined electrons is presented. The advantages of the method are discussed on the basis of…

Instrumentation and Detectors · Physics 2024-02-27 Gokul Das H , R. Dubey , K. Czerski , M. Kaczmarski , A. Kowalska , N. Targosz-Sleczkaa , M. Valat

A new photonuclear thermal neutron facility has been developed at the Physics Department of University of Torino. The facility is based on a medical electron LINAC coupled to a compact converter and moderator assembly. A homogenous thermal…

Using the China Spallation Neutron Source (CSNS) linac as the injector, a 500 MeV proton synchrotron is proposed for multidisciplinary application, such as biology, material and proton therapy. The synchrotron will deliver proton beam with…

Accelerator Physics · Physics 2016-09-21 Liang-Sheng Huang , Sheng Wang , Hong-Fei Ji

This lecture is an introduction to the design of a spallation neutron source and other high intensity proton sources. It discusses two different approaches: linac-based and synchrotron-based. The requirements and design concepts of each…

Accelerator Physics · Physics 2017-08-23 Weiren Chou

The Pohang Accelerator Laboratory operates an electron linac for the pulsed neutron source as one of the long-term nuclear R&D programs at the Korea Atomic Energy Research Institute. The designed beam parameters are as follows; The nominal…

Accelerator Physics · Physics 2008-11-26 G. N. Kim , H. S. Kang , Y. S. Lee , M. H. Cho , I. S. Ko , W. Namkung

The High Intensity Proton Accelerator (HIPA) cyclotron at the Paul Scherrer Institut (PSI) delivers 590 MeV CW proton beam with a maximum power of 1.42 MW. After extraction, the beam is transferred in a 120 m long channel towards two target…

Accelerator Physics · Physics 2022-11-23 M. Haj Tahar , D. Kiselev , A. Knecht , D. Laube , D. Reggiani , J. Snuverink

Top quark production in the process $e^+e^- \to t\bar{t}$ at a future linear electron positron collider with polarised beams is a powerful tool to determine indirectly the scale of new physics. The presented study, based on a detailed…

High Energy Physics - Experiment · Physics 2015-09-18 M. S. Amjad , S. Bilokin , M. Boronat , P. Doublet , T. Frisson , I. Garcìa Garcìa , M. Perelló , R. Pöschl , F. Richard , E. Ros , J. Rouëné , P. Ruiz Femenia , M. Vos

Positron beams, both polarized and non-polarized, low and high energy have a wide range of applications and many methods can be used to produce them. In this paper we analyse the two main methods used to produce positrons for accelerator…

Accelerator Physics · Physics 2021-03-25 Alberto Bacci , Francesco Broggi , Vittoria Petrillo , Luca Serafini

The CLIC study of a high-energy (0.5 - 5 TeV), high-luminosity (1034 - 1035 cm-2 sec-1) e+e- linear collider is presented. Beam acceleration using high frequency (30 GHz) normal-conducting structures operating at high accelerating fields…

Accelerator Physics · Physics 2008-11-26 Jean-Pierre Delahaye , Ian Wilson

A compact polarized positron source for Jefferson Lab is discussed. This scheme relies upon a high polarization (85%), high current (1 mA), low-energy (<100 MeV) electron beam to generate polarized positrons in a conversion target via…

Accelerator Physics · Physics 2009-10-16 J. Dumas , J. Grames , E. Voutier