Results 11 to 20 of about 1,288,945 (304)

Safety for particle accelerators [PDF]

, 2021
The use of non-standard technologies such as superconductivity, cryogenics and radiofrequency pose challenges for the safe operation of accelerator facilities that cannot be addressed using only best practice from occupational safety in conventional ...
Otto, Thomas
core   +2 more sources

Pepper-pot emittance measurement of laser-plasma wakefield accelerated electrons [PDF]

, 2009
The transverse emittance is an important parameter governing the brightness of an electron beam. Here we present the first pepper-pot measurement of the transverse emittance for a mono-energetic electron beam from a laser-plasma wakefield accelerator ...
Shanks, R. P., Welsh, G. H., Cipiccia, S., Anania, M. P., Vieux, G., Gallacher, J. G., Islam, M. R., Ersfeld, B., Issac, R. C., Wiggins, S. M., Jaroszynski, D. A., Brunetti, E.   +11 more
core   +4 more sources

A new type of accelerator for charged particle cancer therapy [PDF]

, 2013
Non-scaling Fixed Field Alternating Gradient accelerators (ns-FFAGs) show great potential for the acceleration of protons and light ions for the treatment of certain cancers.
Rob Edgecock, Edgecock, R., Edgecock, Rob, Edgecock R   +3 more
core   +1 more source

Induced activation in accelerator components [PDF]

, 2014
The residual activity induced in particle accelerators is a serious issue from the point of view of radiation safety as the long-lived radionuclides produced by fast or moderated neutrons and impact protons cause problems of radiation exposure for staff ...
Heine Dølrath Thomsen, Danared, Håkan, Moller, Soren Pape, Møller, Søren Pape, Carlsson, Patrick, Patrick Carlsson, Edgecock, R., Thomsen, Heine Dølrath, Håkan Danared, Ferenc Mezei, Søren Pape Møller, Mezei, Ferenc, Bungau, Adriana, Cywinski, Robert, Robert Cywinski, Barlow, Roger, Adriana Bungau, Anne Ivalu Sander Holm, Holm, Anne Ivalu Sander, Edgecock, Thomas Robert, Cristian Bungau, Carlsson, Patrik Westman, Bungau, Cristian, Thomsen, Heine Dolrath, Roger Barlow, Thomas Robert Edgecock   +25 more
core   +1 more source

Review of Quality Optimization of Electron Beam Based on Laser Wakefield Acceleration

Photonics, 2022
Compared with state-of-the-art radio frequency accelerators, the gradient of laser wakefield accelerators is 3–4 orders of magnitude higher. This is of great significance in the development of miniaturized particle accelerators and radiation sources ...
Kangnan Jiang, Wentao Wang, Ke Feng, Ruxin Li   +3 more
doaj   +1 more source

Polarized Beam Dynamics and Instrumentation in Particle Accelerators [PDF]

, 2023
This Open Access book is drawn from lectures dispensed at the U.S. Particle Accelerator School (USPAS) Summer 2021 Spin Class, by experts in the field. It is an introduction to the dynamics of spin in charged particle accelerators, and to the accelerator

core   +1 more source

Online multi-objective particle accelerator optimization of the AWAKE electron beam line for simultaneous emittance and orbit control

AIP Advances, 2020
Multi-objective optimization is important for particle accelerators where various competing objectives must be satisfied routinely such as, for example, transverse emittance vs bunch length.
Alexander Scheinker, Simon Hirlaender, Francesco Maria Velotti, Spencer Gessner, Giovanni Zevi Della Porta, Verena Kain, Brennan Goddard, Rebecca Ramjiawan   +7 more
doaj   +1 more source

Particle Acceleration in Relativistic Outflows [PDF]

Space Science Reviews, 2012
In this review we confront the current theoretical understanding of particle acceleration at relativistic outflows with recent observational results on various source classes thought to involve such outflows, e.g. gamma-ray bursts, active galactic nuclei, and pulsar wind nebulae.
Bykov, Andrei, Gehrels, Neil, Krawczynski, Henric, Lemoine, Martin, Pelletier, Guy, Pohl, Martin   +5 more
openaire   +6 more sources

Automation and control of laser wakefield accelerators using Bayesian optimization

Nature Communications, 2020
Laser wakefield accelerators are compact sources of ultra-relativistic electrons which are highly sensitive to many control parameters. Here the authors present an automated machine learning based method for the efficient multi-dimensional optimization ...
R. J. Shalloo, S. J. D. Dann, J.-N. Gruse, C. I. D. Underwood, A. F. Antoine, C. Arran, M. Backhouse, C. D. Baird, M. D. Balcazar, N. Bourgeois, J. A. Cardarelli, P. Hatfield, J. Kang, K. Krushelnick, S. P. D. Mangles, C. D. Murphy, N. Lu, J. Osterhoff, K. Põder, P. P. Rajeev, C. P. Ridgers, S. Rozario, M. P. Selwood, A. J. Shahani, D. R. Symes, A. G. R. Thomas, C. Thornton, Z. Najmudin, M. J. V. Streeter   +28 more
doaj   +1 more source

Evaluation of MLC Thickness and Composite Effects on Collimation Parameters using EGSnrc and IAEA Phase Space Data [PDF]

Journal of Biomedical Physics and Engineering, 2020
Background: Recently, multileaf collimators (MLC) have become an important part of any LINAC collimation system because they reduce the treatment planning time and improve the conformity.
K Hadad, H Alipour
doaj   +1 more source