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Fackelman, Eric Daniel; Sjobak, Kyrre Ness; Gjersdal, Håvard; Adli, Erik; Thomas, Cyrille & Levinsen, Yngve Inntjore
[Show all 7 contributors for this article]
(2023).
SIMULATION OF THE ESS PROTON BEAM WINDOW SCATTERING.
Show summary
The European Spallation Source produces neutrons used for science by delivering a 5 MW proton beam to a tungsten target. The proton beam parameters must remain within a well-defined range during all phases of facility exploitation. The proton beam parameters are measured and monitored by an instrumentation suite, among which are two beam imaging systems. Parameters such as position and beam current density can be calculated from the images, supporting beam tuning and operation. However, one of the two systems may be affected by beam scattering. In this paper, we will focus on modelling the impact of the scattering on the beam on target distribution. The modelling process, involving simulation codes such as Geant4 and two-dimensional convolution in Matlab, is described. Initially, Geant4 simulates a scattered pencil beam. The resulting distribution is fitted and can be used similarly to an instrument response in image processing to model any possible beam distribution. Finally, we discuss the results of the scattered beam imaging model, showing the range of applications of the model and the impact of scattering on the beam parameters.
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Rieker, Vilde Flognfeldt; Aksoy, Avni; Malyzhenkov, Alexander; Wroe, Laurence Matthew; Corsini, Roberto & Farabolini, Wilfrid
[Show all 11 contributors for this article]
(2023).
BEAM INSTRUMENTATION FOR REAL TIME FLASH DOSIMETRY: EXPERIMENTAL STUDIES IN THE CLEAR FACILITY.
Show summary
Real-time dosimetry for ultra-high dose-rates (UHDR) and very high energy electrons (VHEE) is a challenge which is currently being studied using the electron beam at CERN Linear Accelerator for Research (CLEAR). These studies are motivated by the demand for reliable dosimetry for FLASH radiotherapy. This mode of irradiation relies on UHDR, a dose rate regime where conventional dosimetry monitors such as ionization chambers saturate. One potential approach is the use of a calibrated beam-based dosimetry method. The existing beam instrumentation provides real-time information on charge and both transverse and longitudinal profiles of the pulses, and makes possible a measurement of the beam Twiss parameters. In the context of achieving a real-time prediction of the dose deposition, this paper presents experimental studies of the correlation of these parameters with the read-out of passive and dose-rate independent methods such as radiochromic films, and compares them with simulation results.
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Adli, Erik; Gjersdal, Håvard; Sjobak, Kyrre Ness; Christoforo, Mark Greyson; Fackelman, Eric Daniel & Røhne, Ole Myren
[Show all 17 contributors for this article]
(2022).
PROGRESS OF THE ESS PROTON BEAM IMAGING SYSTEMS.
Show summary
The ESS Target Proton Beam Imaging Systems has the
objective to image the 5 MW ESS proton beam as it enters
the spallation target. The imaging systems has to operate
in a harsh radiation environment, leading to a number of
challenges : development of radiation hard photon sources,
long and aperture-restricted optical paths and fast electronics
required to provide rapid information in case of beam anoma-
lies. This paper outlines how main challenges of the imaging
systems have been addressed, and the status of deployment
as ESS gets closer to beam.
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Sjobak, Kyrre Ness; Adli, Erik; Bergamaschi, Michele; Burger, Stephane; Corsini, Roberto & Curcio, Alessandro
[Show all 30 contributors for this article]
(2019).
Status of the CLEAR electron beam user facility at CERN.
Show summary
The CERN Linear Electron Accelerator for Research (CLEAR) has now finished its second year of operation, providing a testbed for new accelerator technologies and a versatile radiation source. Hosting a varied experimental program, this beamline provides a flexible test facility for users both internal and external to CERN, as well as being an excellent accelerator physics training ground. The energy can be varied between 60 and 220 MeV, bunch length between 1 and 4 ps, bunch charge in the range 10 pC to 2 nC, and number of bunches in the range 1 to 200, at a repetition rate of 0.8 to 10 Hz. The status of the facility with an overview of the recent experimental results is presented.
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Adli, Erik
(2019).
Particle Physics at the Energy Frontier.
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Adli, Erik; Karsch, Stefan & Pompili, Riccardo
(2018).
Summary of working group 1: Electron beams from plasmas.
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment.
ISSN 0168-9002.
909,
p. 38–40.
doi:
10.1016/j.nima.2017.12.018.
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Adli, Erik
(2017).
AWAKE: the proton-driven plasma wakefield accelerator experiment at CERN.
Show summary
AWAKE: the proton-driven plasma wakefield accelerator experiment at CERN
In order to achieve affordable and compact high-energy particle accelerators, machines with high accelerating gradients and high efficiency is necessary. The beam-driven plasma wakefield accelerator is a novel accelerator technique being developed for this purpose. The field has recently seen a rapid experimental progress. The AWAKE experiment at CERN is the first proton-driven plasma wakefield accelerator experiment. It uses the self-modulation instability (SMI) to transform the 12 cm long, 400 GeV proton bunch from the SPS into a train of bunches spaced by the plasma wavelength (~ 1mm). The train can then resonantly drive GV/m fields that can be used to accelerate electrons over 10s to 100s of meters. The first experiments started in December 2016 aiming at measuring the parameters of the p+ bunch after it has experienced the SMI in a 10 m long rubidium plasma with an electron density in the 1-10e14/cm3 range. The principle of SMI physics, the experimental goals and first experimental results will be presented. We also briefly discuss future plans for AWAKE, as well as ideas for high-energy physics applications.
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Adli, Erik
(2017).
Recent progress in beam-driven plasma wakefield acceleration research.
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Adli, Erik
(2016).
Som å bygge et Hubble-teleskop inne i en kjernereaktor.
[Internet].
https://titan.uio.no/node/1441.
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Adli, Erik
(2016).
Oslo ESS in-kind contribution: Target Proton Beam Imaging Systems.
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Adli, Erik & Lindstrøm, Carl Andreas
(2016).
Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma.
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Lindstrøm, Carl Andreas; Adli, Erik & Berglyd Olsen, Veronica Kristine
(2015).
Nå tar også positronene bølgen.
[Internet].
Fysisk Institutt: Forskning.
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Berglyd Olsen, Veronica Kristine; Adli, Erik; Muggli, P.; Amorim, L. D. & Vieira, J. M.
(2015).
LOADING OF A PLASMA-WAKEFIELD ACCELERATOR SECTION
DRIVEN BY A SELF-MODULATED PROTON BUNCH,
Proceedings of the 6th International Particle Accelerator Conference.
Jefferson Lab, Newport News.
ISSN 978-3-95450-168-7.
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Adli, Erik
(2015).
Consideration for a plasma stage in a PWFA linear collider.
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Adli, Erik
(2015).
Particle Driven Plasma Acceleration.
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Adli, Erik
(2015).
Plasma wakefield accelerators - the particle colliders of the future?
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Adli, Erik
(2015).
Big Bang in a Box - The Interplay between High Energy Physics and the Society.
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Adli, Erik
(2015).
PLASMABØLGEAKSELERASJON: Ny teknologi gir elektroner enorm energi.
[Business/trade/industry journal].
Teknisk Ukeblad.
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Sjøbæk, Kyrre Ness; Grudiev, A & Adli, Erik
(2014).
New Criterion for Shape Optimization of Normal-Conducting Accelerator Cells for High-Gradient Applications.
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Adli, Erik
(2014).
Transverse effects in plasma wakefield acceleration at FACET.
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Sjøbæk, Kyrre Ness; Adli, Erik & Grudiev, A
(2013).
Surface Field Optimization of Accelerating Structures for CLIC using ACE3P on Remote Computing Facility.
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Adli, Erik
(2013).
The CLIC Project - Status and Prospects.
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Sjøbæk, Kyrre Ness; Adli, Erik; Grudiev, A & Wuensch, W
(2012).
Design of an Accelerating Structure for a 500 GeV CLIC using Ace3P.
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Adli, Erik
(2009).
Next Generation Particle Accelerators – CLIC.
Nordic space activities.
ISSN 0805-7397.
17.
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Adli, Erik & Nordahl, Marianne
(2009).
Mens kjempebabyen sover.
[Internet].
http://www.forskning.no/artikler/2009/februar/211327 .
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Adli, Erik & Nordahl, Marianne
(2009).
CERN søker rekrutter.
[Internet].
http://www.forskning.no/artikler/2009/februar/210902.
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Adli, Erik
(2009).
CERN søker.
[Internet].
forskning.no.
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Adli, Erik
(2009).
Mens kjempebabyen.
[Internet].
forskning.no.
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Adli, Erik; Ruber, Roger; Syratchev, I; Schulte, D; Corsini, Roberto & Ziemann, Volker
(2009).
First Beam Tests of the CLIC Power Extraction Structure in the Two-beam Test Stand.
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Adli, Erik & Eggen, Espen
(2008).
Verdens lengste skalpell.
[Internet].
http://www.forskning.no/artikler/2007/desember/1198079322.03.
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Adli, Erik & Flodin Andersen, P. A.
(2008).
Verdens største samarbeid om å finne verdens minste ting (i "Get Real" / UiO).
[Internet].
http://www.realfag.uio.no/sporsmaalene.shtml.
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Adli, Erik
(2008).
Drive Beam Dynamics for CLIC.
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Adli, Erik
(2008).
Drive Beam Decelerator and TBL.
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Adli, Erik
(2008).
Beam Dynamics of the CLIC Decelerator.
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Adli, Erik; Corsini, Roberto; Anne, Dabrowski; Schulte, D; Shaker, S.H. & Skowronski, Piotr Krzysztof
[Show all 8 contributors for this article]
(2008).
Status of an Automatic Beam Steering for the CLIC Test Facility 3.
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Adli, Erik & Schulte, D
(2008).
Beam-Based Alignment for the CLIC Decelerator.
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Adli, Erik; Schulte, D & Syratchev, I
(2008).
A Study of Failure Modes in the CLIC Decelerator.
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Adli, Erik
(2007).
Offisielle brosjyrer om eksperimentene ATLAS og ALICE.
CERN Press Office.
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Adli, Erik
(2007).
Neste generasjons partikkelakseleratorer - LHC i perspektiv.
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Adli, Erik
(2007).
Beam Dynamic Studies for the CLIC Decelerator.
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Adli, Erik
(2007).
Test Beam Line (TBL) Beam Dynamics studies.
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Syratchev, I; Schulte, D & Adli, Erik
(2007).
HIGH RF POWER PRODUCTION FOR CLIC.
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Adli, Erik
(2007).
Particle Accelerators - the Next Generation.
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Adli, Erik
(2007).
Particle Accelerators - the Next Generation.
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Adli, Erik
(2006).
Forskning ved CERN i kulturtidsskriftet LILLIT (lillit.web).
[Newspaper].
Kulturtidsskriftet LILLIT.
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Adli, Erik
(2009).
A Study of the Beam Phyiscs in the CLIC Drive Beam Decelerator.
Det matematisk naturvitenskapelige fakultet.
