Benjamin Cheymol
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View article: Simulation of surface x-ray emission from the ASTERICS ECR ion source
Simulation of surface x-ray emission from the ASTERICS ECR ion source Open
The bremsstrahlung x-ray emission induced by the impact of plasma electrons de-confined on the chamber wall of the ASTERICS electron cyclotron resonance ion source is investigated through a suite of two simulation codes. The electron high …
View article: Accurate measurements of delayed neutron data for reactor applications: methodology and application to 235U(nth,f)
Accurate measurements of delayed neutron data for reactor applications: methodology and application to 235U(nth,f) Open
Large inconsistencies still exist in nuclear data libraries regarding the kinetic parameters of delayed neutron (DN) precursors. As an example, there is a 17% gap between ENDF-B/VIII.0 and JEFF-3.3 on the average lifetime T 1/2 of DN precu…
View article: Beam Instrumentation, Challenging Tools for Demanding Projects –– a Snapshot from the French Assigned Network
Beam Instrumentation, Challenging Tools for Demanding Projects –– a Snapshot from the French Assigned Network Open
Particle accelerators are thrusting the exploration of beam production towards several demanding territories, that is beam high intensity, high energy, short time and geometry precision or small size. Accelerators have thus more and more s…
View article: Single Event Upsets Under 14-MeV Neutrons in a 28-nm SRAM-Based FPGA in Static Mode
Single Event Upsets Under 14-MeV Neutrons in a 28-nm SRAM-Based FPGA in Static Mode Open
A sensitivity characterization of a Xilinx Artix-7 FPGA against 14.2 MeV neutrons is presented. The content of the internal SRAMs and flip-flops were downloaded in a PC and compared with a golden version of it. Flipped cells were identifie…
View article: The First Experience and Results of Beam Diagnostics Deployment at the ESS Accelerator
The First Experience and Results of Beam Diagnostics Deployment at the ESS Accelerator Open
The European Spallation Source (ESS) will produce neutrons for science by subjecting a tungsten target to the high-intensity proton beam from a superconducting linear accelerator. A complete suite of beam diagnostics will enable tuning, mo…
View article: Overview and Status of Diagnostics for the ESS Project
Overview and Status of Diagnostics for the ESS Project Open
The European Spallation Source, now under construction in Lund, Sweden, aims to be the world's most powerful pulsed neutron scattering facility. Driving the neutron source is a 5-MW superconducting proton linear accelerator operating at 4%…
View article: Measurements and simulations of the beam extraction from the ESS proton source
Measurements and simulations of the beam extraction from the ESS proton source Open
A proton source with a Low Energy Beam Transport (LEBT) will be delivered to ESS in January 2018 by INFN-LNS. In order to prepare for the commissioning of this system at ESS, understanding the beam dynamics of the beam extraction and trans…
View article: ESS Emittance Measurements at INFN CATANIA
ESS Emittance Measurements at INFN CATANIA Open
Beam characteristics at low energy are an absolute necessity for an acceptable injection in the next stage of a linear accelerator, and are also necessary to reduce beam loss and radiation inside the machine. CEA is taking part of ESS lina…
View article: Effect of Beam Losses on Wire Scanner Scintillator Readout, Hypothesis and Preliminary Results
Effect of Beam Losses on Wire Scanner Scintillator Readout, Hypothesis and Preliminary Results Open
In hadron accelerators, the characterization of the beam transverse halo can lead to a better understanding of the beam dynamics and ultimately to a reduction of the beam losses. Unfortunately the effect of losses on beam instrumentation i…
View article: High Power and High Duty Cycle Slit and Grid System for Hadron Accelerator Commissioning
High Power and High Duty Cycle Slit and Grid System for Hadron Accelerator Commissioning Open
Transverse emittance is one of the key measurements to be performed during the commissioning of the low energy sections of an hadron linac. The good knowledge of the beam transverse phase space allows a safe and efficient operation of the …
View article: Effects of Energy Deposition Models and Conductive Cooling on Wire Scanner Thermal Load, Analytical and Finite Element Analysis Approach
Effects of Energy Deposition Models and Conductive Cooling on Wire Scanner Thermal Load, Analytical and Finite Element Analysis Approach Open
One of the main limitations of the wire scanner in high intensity linac is the inability of the wire to survive at high duty cycle. For the commissioning of such machines, duty cycle must be reduced to preserve interceptive devices. A good…