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We describe a novel design for an intense source of slow positrons based on pair production with a beam of electrons from a 10 MeV accelerator hitting a thin target at a low incidence angle. The positrons are collected with a set of coils…

High Energy Physics - Experiment · Physics 2009-11-10 P. Perez , A. Rosowsky

High-frequency hadron-therapy linacs have been studied for the last 20 years and are now being built for dedicated proton-therapy centres. The main reason for using high-frequency linacs, in spite of the small apertures and low-duty cycle,…

Medical Physics · Physics 2018-04-24 Alberto Degiovanni

The power of the proton beam of a high-power spallation neutron source generally ranges from 100 kW to several MW. The distribution of the power density of the beam on the target is critical for the stable operation of the high-power…

Accelerator Physics · Physics 2021-08-30 Yang Xiaoyun , Jing Hantao , Tian Binbin , Ou Li , Sun Yankun , Gao Xiaolong

Long lived fission products represent a major challenge in nuclear waste management due to persistent radiotoxicity over very long timescales. This study focuses on six of these fission products: Se-79, Zr-93, Tc-99, Sn-126, I-127, Cs-135.…

Accelerator Physics · Physics 2026-02-23 Grigor Tukharyan , William Reed Kendrick , Areg Danagoulian , Benoit Forget

Like every megaproject, the European Spallation Source (ESS) currently under construction in Lund, Sweden, has had to make a number of inevitable compromises to remain within budget and on schedule. Some of these compromises carry technical…

Instrumentation and Detectors · Physics 2023-01-18 Phil Bentley

Slow positrons are increasingly important to the study of material surfaces. For these kinds of studies, the positrons must have low emittance and relatively high brightness. Unfortunately, fast positron sources like radioactive capsules or…

Accelerator Physics · Physics 2025-08-12 Sophie Crisp , Ryland Goldman , Arif Ismail , Spencer Gessner

ANL and the National Science Center "Kharkov Institute of Physics Technology" (NSC KIPT, Kharkov, Ukraine) jointly proposed to design and build a 100MeV/100KW linear accelerator which will be used to drive the neutron source subcritical…

Accelerator Physics · Physics 2015-06-11 Mi Hou , Xiang He , Shilun Pei

In the following we stress the advantages of the NICA research programme in the context of studying the spectator-induced electromagnetic phenomena present in proton-nucleus and heavy ion collisions. We point at the specific interest of…

Nuclear Theory · Physics 2013-01-23 Andrzej Rybicki , Antoni Szczurek , Mariola Klusek-Gawenda , Iwona Sputowska

The physics model of a next-generation spallation-driven high-current ultracold neutron (UCN) source capable of delivering an extracted UCN rate of around an-order-of-magnitude higher than the strongest proposed sources, and around…

Instrumentation and Detectors · Physics 2020-01-08 K. K. H. Leung , G. Muhrer , T. Hügle , T. M. Ito , E. M. Lutz , M. Makela , C. L. Morris , R. W. Pattie, , A. Saunders , A. R. Young

The Proof-of-Principle (POP) prototype of the Rf-Focused Drift tube (RFD) linac structure is currently under test at Linac Systems, after years of delay due to a variety of technical problems. A discussion of these technical problems and…

Accelerator Physics · Physics 2007-05-23 Donald A. Swenson

Recent development of Ultra short and Intense laser system paved the way for the generation of short and brilliant proton sources that can be used to study plasmas at extreme conditions in the context of High Energy Density physics. Energy…

The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is a pulsed source of neutrons and, as a byproduct of this operation, an intense source of pulsed neutrinos via stopped-pion decay. The COHERENT collaboration uses this…

The JAERI/KEK Joint Project for the high-intensity proton accelerator facility has been proposed with a superconducting (SC) linac option from 400 MeV to 600MeV. System design of the SC linac has been carried out based on the…

The advantage of the linac-ring type electron proton collider is that it allows for the straightforward construction of $\gamma$p collider. In a $\gamma$p collider high energy photons can be generated from Compton backscattering of laser…

Accelerator Physics · Physics 2019-04-08 Zafer Nergiz , Saleh Sultansoy , Husnu Aksakal , Frank Zimmermann

A proposal for a 10-120 mA proton linac employing superconducting beta-graded, CERN type, four cell cavities at 352 MHz is presented. The high energy part (100 MeV-1 GeV) of the machine is split in three beta-graded sections, and transverse…

acc-phys · Physics 2008-11-26 C. Pagani , G. Bellomo , P. Pierini

In this paper, we give an overview of the different types of linac accelerators, with special emphasis on their use for a hadron-therapy facility.

Accelerator Physics · Physics 2018-04-24 Alessandra M. Lombardi

The Spallation Neutron Source (SNS), located at Oak Ridge Laboratory in the United States, will be coming online over the next few years. In addition to producing fluxes of high-intensity neutrons, the interaction of the proton beam with…

High Energy Physics - Experiment · Physics 2019-08-13 Heather Ray

Project X is a multi-megawatt proton facility being developed to support intensity frontier research in elementary particle physics, with possible applications to nuclear physics and nuclear energy research, at Fermilab. The centerpiece of…

Accelerator Physics · Physics 2012-08-29 S. Nagaitsev

China Spallation Neutron Source(CSNS) target power will upgrade to 500 kW(CSNS-II) from 300kW, energy gain of H-Linac will up to 300 MeV from 80 MeV using about 50 superconductor cavities. LLRF is an important device for controlling the…

Accelerator Physics · Physics 2023-11-17 Zhexin Xie , Kai Guo , Zhencheng Mu , Xinpeng Ma , Nan Gan , Maliang Wan , Bo Wang , Linyan Rong , Hui Zhang , Hexin Wang

This artcile presents an optimisation of performance and cost of neutron scattering instrumentation at the European Spallation Source. This is done by trading detailed cost functions against beam transmission functions in a…

Instrumentation and Detectors · Physics 2016-03-21 P. M. Bentley , C. S. Zendler , O. Kirstein
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