133 research outputs found
New Capabilities of the FLUKA Multi-Purpose Code
No full textWe would like to deeply thank the CERN Knowledge Transfer
and Legal Service teams for their essential and extended support.
Our appreciation also goes to the FLUKA.CERN Collaboration
Board members for their strong commitment.FLUKA is a general purpose Monte Carlo code able to describe the transport and
interaction of any particle and nucleus type in complex geometries over an energy
range extending from thermal neutrons to ultrarelativistic hadron collisions. It has many
different applications in accelerator design, detector studies, dosimetry, radiation
protection, medical physics, and space research. In 2019, CERN and INFN, as FLUKA
copyright holders, together decided to end their formal collaboration framework, allowing
them henceforth to pursue different pathways aimed at meeting the evolving requirements
of the FLUKA user community, and at ensuring the long term sustainability of the code. To
this end, CERN set up the FLUKA.CERN Collaboration1. This paper illustrates the physics
processes that have been newly released or are currently implemented in the code
distributed by the FLUKA.CERN Collaboration2 under new licensing conditions that are
meant to further facilitate access to the code, as well as intercomparisons. The description
of coherent effects experienced by high energy hadron beams in crystal devices, relevant
to promising beam manipulation techniques, and the charged particle tracking in vacuum
regions subject to an electric field, overcoming a former lack, have already been made
available to the users. Other features, namely the different kinds of low energy deuteron
interactions as well as the synchrotron radiation emission in the course of charged particle
transport in vacuum regions subject to magnetic fields, are currently undergoing
systematic testing and benchmarking prior to release. FLUKA is widely used to
evaluate radiobiological effects, with the powerful support of the Flair graphical
interface, whose new generation (Available at http://flair.cern) offers now additional
capabilities, e.g., advanced 3D visualization with photorealistic rendering and support for industry-standard volume visualization of medical phantoms. FLUKA has also been
playing an extensive role in the characterization of radiation environments in which
electronics operate. In parallel, it has been used to evaluate the response of
electronics to a variety of conditions not included in radiation testing guidelines and
standards for space and accelerators, and not accessible through conventional ground
level testing. Instructive results have been obtained from Single Event Effects (SEE)
simulations and benchmarks, when possible, for various radiation types and energies.
The code has reached a high level of maturity, from which the FLUKA.CERN Collaboration
is planning a substantial evolution of its present architecture. Moving towards a modern
programming language allows to overcome fundamental constraints that limited
development options. Our long term goal, in addition to improving and extending its
physics performances with even more rigorous scientific oversight, is to modernize its
structure to integrate independent contributions more easily and to formalize quality
assurance through state-of-the-art software deployment techniques. This includes a
continuous integration pipeline to automatically validate the codebase as well as
automatic processing and analysis of a tailored physics-case test suite. With regard to
the aforementioned objectives, several paths are currently envisaged, like finding synergies
with Geant4, both at the core structure and interface level, this way offering the user the
possibility to run with the same input different Monte Carlo codes and crosscheck the
results
The AWAKE Run 2 programme and beyond
No full textAutores: Edda Gschwendtner, Konstantin Lotov, Patric Muggli, Matthew Wing, Riccardo Agnello, Claudia Christina Ahdida, Maria Carolina Amoedo Goncalves, Yanis Andrebe, Oznur Apsimon, Robert Apsimon, Jordan Matias Arnesano, Anna-Maria Bachmann, Diego Barrientos, Fabian Batsch, Vittorio Bencini, Michele Bergamaschi, Patrick Blanchard, Philip Nicholas Burrows, Birger Buttenschön, Allen Caldwell, James Chappell, Eric Chevallay, Moses Chung, David Andrew Cooke, Heiko Damerau, Can Davut, Gabor Demeter, Amos Christopher Dexter, Steffen Doebert, Francesa Ann Elverson, John Farmer, Ambrogio Fasoli, Valentin Fedosseev, Ricardo Fonseca, Ivo Furno, Spencer Gessner, Aleksandr Gorn, Eduardo Granados, Marcel Granetzny, Tim Graubner, Olaf Grulke, Eloise Daria Guran, Vasyl Hafych, Anthony Hartin, James Henderson, Mathias Hüther, Miklos Kedves, Fearghus Keeble, Vadim Khudiakov, Seong-Yeol Kim, Florian Kraus, Michel Krupa, Thibaut Lefevre, Linbo Liang, Shengli Liu, Nelson Lopes, Miguel Martinez Calderon, Stefano Mazzoni, David Medina Godoy, Joshua Moody, Kookjin Moon, Pablo Israel Morales Guzmán, Mariana Moreira, Tatiana Nechaeva, Elzbieta Nowak, Collette Pakuza, Harsha Panuganti, Ans Pardons, Kevin Pepitone, Aravinda Perera, Jan Pucek, Alexander Pukhov, Rebecca Louise Ramjiawan, Stephane Rey, Adam Scaachi, Oliver Schmitz, Eugenio Senes, Fernando Silva, Luis Silva, Christine Stollberg, Alban Sublet, Catherine Swain, Athanasios Topaloudis, Nuno Torrado, Petr Tuev, Marlene Turner, Francesco Velotti, Livio Verra, Victor Verzilov, Jorge Vieira, Helmut Vincke, Martin Weidl, Carsten Welsch, Manfred Wendt, Peerawan Wiwattananon, Joseph Wolfenden, Benjamin Woolley, Samuel Wyler, Guoxing Xia, Vlada Yarygova, Michael Zepp, Giovanni Zevi Della Porta. ::: Publisher: [MDPI] ::: Location: [
Reconstruction of 400 GeV/c proton interactions with the SHiP-charm project
No full textInternational audienceThe SHiP-charm project was proposed to measure the associated charm production induced by 400 GeV/c protons in a thick target, including the contribution from cascade production. An optimisation run was performed in July 2018 at CERN SPS using a hybrid setup. The high resolution of nuclear emulsions acting as vertex detector was complemented by electronic detectors for kinematic measurements and muon identification. Here we present first results on the analysis of nuclear emulsions exposed in the 2018 run, which prove the capability of reconstructing proton interaction vertices in a harsh environment, where the signal is largely dominated by secondary particles produced in hadronic and electromagnetic showers within the lead target
Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles
No full textDark photons are hypothetical massive vector particles that could mix with ordinary photons. The simplest theoretical model is fully characterised by only two parameters: the mass of the dark photon mγD and its mixing parameter with the photon, ε. The sensitivity of the SHiP detector is reviewed for dark photons in the mass range between 0.002 and 10 GeV. Different production mechanisms are simulated, with the dark photons decaying to pairs of visible fermions, including both leptons and quarks. Exclusion contours are presented and compared with those of past experiments. The SHiP detector is expected to have a unique sensitivity for mγD ranging between 0.8 and 3.3+0.2−0.5 GeV, and ε2 ranging between 10−11 and 10−17
Measurements and FLUKA simulations of aluminium, bismuth and indium activation by stray radiation from the annihilation of low energy antiprotons
No full textThe Antiproton Decelerator at the CERN Proton Synchrotron complex provides antiprotons at a kinetic energy of 5.3 Mev to several experiments. The stray radiation from antiproton annihilations is the most important radiation field for radiation protection in the Antiproton Decelerator experimental areas
Reconstruction of 400 GeV/c proton interactions with the SHiP-charm project
No full textThe SHiP-charm project was proposed to measure the associated charm production induced by 400 GeV/c protons in a thick target, including the contribution from cascade production. An optimisation run was performed in July 2018 at CERN SPS using a hybrid setup. The high resolution of nuclear emulsions acting as vertex detector was complemented by electronic detectors for kinematic measurements and muon identification. Here we present first results on the analysis of nuclear emulsions exposed in the 2018 run, which prove the capability of reconstructing proton interaction vertices in a harsh environment, where the signal is largely dominated by secondary particles produced in hadronic and electromagnetic showers within the lead target
Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target
No full textThe SHiP experiment is proposed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/ proton beam dump at the CERN SPS. About muons per spill will be produced in the dump. To design the experiment such that the muon-induced background is minimized, a precise knowledge of the muon spectrum is required. To validate the muon flux generated by our Pythia and GEANT4 based Monte Carlo simulation (FairShip), we have measured the muon flux emanating from a SHiP-like target at the SPS. This target, consisting of 13 interaction lengths of slabs of molybdenum and tungsten, followed by a 2.4 m iron hadron absorber was placed in the H4 400 GeV/ proton beam line. To identify muons and to measure the momentum spectrum, a spectrometer instrumented with drift tubes and a muon tagger were used. During a three-week period a dataset for analysis corresponding to protons on target was recorded. This amounts to approximatively 1% of a SHiP spill.The SHiP experiment will search for very weakly interacting particles beyond the Standard Model which are produced in a 400 \GeV/ proton beam dump at the CERN SPS. About muons per spill will be produced in the dump. To design the experiment such that the muon-induced background is minimized, a precise knowledge of the muon spectrum is required. To validate the muon flux generated by our Pythia and GEANT4 based Monte Carlo simulation (FairShip), we have measured the muon flux emanating from a SHiP-like target at the SPS. This target, consisting of 13 interaction lengths of slabs of molybdenum and tungsten, followed by a 2.4 m iron hadron absorber was placed in the H4 400~\GeV/ proton beam line. To identify muons and to measure the momentum spectrum, a spectrometer instrumented with drift tubes and a muon tagger were used. During a three-week period a dataset for analysis corresponding to protons on target was recorded. This amounts to approximatively 1\% of a SHiP spill.The SHiP experiment is proposed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. About muons per spill will be produced in the dump. To design the experiment such that the muon-induced background is minimized, a precise knowledge of the muon spectrum is required. To validate the muon flux generated by our Pythia and GEANT4 based Monte Carlo simulation (FairShip), we have measured the muon flux emanating from a SHiP-like target at the SPS. This target, consisting of 13 interaction lengths of slabs of molybdenum and tungsten, followed by a 2.4 m iron hadron absorber was placed in the H4 400 GeV/c proton beam line. To identify muons and to measure the momentum spectrum, a spectrometer instrumented with drift tubes and a muon tagger were used. During a 3-week period a dataset for analysis corresponding to protons on target was recorded. This amounts to approximatively 1% of a SHiP spill
FLUKA-Geant4 comparison for the muon flux experiment in the H4 beamline
No full textThe FLUKA - Geant4 comparison for the the muon flux experiment is reported. The experiment was performed in 2018 on the H4 400 GeV/c proton beamline to measure the muon flux emanating from a SHiP replica target. Good agreement between the two Monte Carlo simulations was found, in the low momentum and low transverse momentum range the agreement is at the level of 20%, while in the tails the disagreement is at maximum of a factor ∼3. These results suggest to reduce the safety factor for future BDF/SHiP facility radiation calculations from 5 (old recommended value) to 3 (new value)
Reconstruction of 400 GeV/c proton interactions with the SHiP-charm project
No full textThe SHiP-charm project was proposed to measure the associated charm production induced by 400 GeV/c protons in a thick target, including the contribution from cascade production. An optimisation run was performed in July 2018 at CERN SPS using a hybrid setup. The high resolution of nuclear emulsions acting as vertex detector was complemented by electronic detectors for kinematic measurements and muon identification. Here we present first results on the analysis of nuclear emulsions exposed in the 2018 run, which prove the capability of reconstructing proton interaction vertices in a harsh environment, where the signal is largely dominated by secondary particles produced in hadronic and electromagnetic showers within the lead target
Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target
No full textThe SHiP experiment is proposed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. About 10 11 muons per spill will be produced in the dump. To design the experiment such that the muon-induced background is minimized, a precise knowledge of the muon spectrum is required. To validate the muon flux generated by our Pythia and GEANT4 based Monte Carlo simulation (FairShip), we have measured the muon flux emanating from a SHiP-like target at the SPS. This target, consisting of 13 interaction lengths of slabs of molybdenum and tungsten, followed by a 2.4 m iron hadron absorber was placed in the H4 400 GeV/c proton beam line. To identify muons and to measure the momentum spectrum, a spectrometer instrumented with drift tubes and a muon tagger were used. During a 3-week period a dataset for analysis corresponding to (3.27±0.07)×1011 protons on target was recorded. This amounts to approximatively 1% of a SHiP spill
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