Jacques Marroncle
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View article: Overview and current status of the IFMIF-DONES Accelerator Systems
Overview and current status of the IFMIF-DONES Accelerator Systems Open
The IFMIF-DONES facility provides a very high intense flux of neutrons for research on materials of future fusion reactors and other complementary applications. The generation of those neutrons is driven by stripping reactions between ener…
View article: High Beam Current Operation with Beam Diagnostics at LIPAc
High Beam Current Operation with Beam Diagnostics at LIPAc Open
The Linear IFMIF Prototype Accelerator (LIPAc) is under commissioning in Rokkasho Fusion Institute in Japan and aims to accelerate 125 mA D⁺ at 9 MeV in CW mode for validating the IFMIF accelerator design. To insure a fine characterization…
View article: Non-invasive Profilers for the Cold Part of ESS Accelerator
Non-invasive Profilers for the Cold Part of ESS Accelerator Open
Several Non-invasive Profile Monitors are being in-stalled along the accelerator to support the commissioning, tuning and operation of the powerful proton based ESS linear accelerator. In the low energy parts of the ESS linac (3.6 MeV to 9…
View article: IFMIF/EVEDA RFQ Beam Commissioning at Nominal 125 mA Deuteron Beam in Pulsed Mode
IFMIF/EVEDA RFQ Beam Commissioning at Nominal 125 mA Deuteron Beam in Pulsed Mode Open
In summer 2019 the IFMIF/EVEDA Radio Frequency Quadrupole (RFQ) accelerated its nominal 125 mA deuteron beam current up to 5 MeV, with 90% transmission for pulses of 1 ms at 1Hz. The Linear IFMIF Prototype Accelerator (LIPAc) is a high int…
View article: Design and development of Ionization Profile Monitor for the Cryogenic sections of the ESS Linac
Design and development of Ionization Profile Monitor for the Cryogenic sections of the ESS Linac Open
Saclay CEA/IRFU is working for the delivery of five Non-Invasive Profile Monitors in the frame of the in-kind contribution agreement signed with the European Spallation Source. Neutrons will be produced by spallation reactions of 2 GeV pro…
View article: Characterization and First Beam Loss Detection with One ESS-nBLM System Detector
Characterization and First Beam Loss Detection with One ESS-nBLM System Detector Open
The monitoring of losses is crucial in any accelerator. In the new high intensity hadron facilities even low energy beam can damage or activate the materials so the detection of small losses in this region is very important. A new type of …
View article: Transverse Emittance Measurement of a 2.5 MeV Proton Beam on LIPAc, IFMIF’s Prototype
Transverse Emittance Measurement of a 2.5 MeV Proton Beam on LIPAc, IFMIF’s Prototype Open
IFMIF (International Fusion Materials Irradiation Fa-cility) is an accelerator-driven neutron source aiming at testing fusion reactor materials. Under the Broader Ap-proach Agreement, a 125 mA / 9 MeV CW deuteron accelerator called LIPAc (…
View article: Space Charge Effects Studies for the ESS Cold Linac Beam Profiler
Space Charge Effects Studies for the ESS Cold Linac Beam Profiler Open
Five Ionization Profile Monitors are being built by CEA in the framework of the in-kind contribution agreement signed with ESS. The IPMs will be installed in the Cold Linac where the proton energy range they need to cover extends from 90 M…
View article: Commissioning Status of Linear IFMIF Prototype Accelerator (LIPAc)
Commissioning Status of Linear IFMIF Prototype Accelerator (LIPAc) Open
The IFMIF project aiming at material tests for a future fusion DEMO reactor is under the EVEDA phase in the BA Agreement of fusion program between Japan and EU. As the accelerator activity, the installation and commissioning of the Linear …
View article: ESS nBLM: Beam Loss Monitors based on Fast Neutron Detection
ESS nBLM: Beam Loss Monitors based on Fast Neutron Detection Open
A new type of Beam Loss Monitor (BLM) system is being developed for use in the European Spallation Source (ESS) linac, primarily aiming to cover the low energy part (proton energies between 3-100 MeV). In this region of the linac, typical …
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: Progress Report on LIPAC
Progress Report on LIPAC Open
International Fusion Materials Irradiation Facility (IFMIF) is the neutron source for simulating fusion reactor environment using two 40 MeV/125 mA CW D⁺ beams. LIPAc facility is under construction in Rokkasho for validating 9 MeV/125 mA C…
View article: Increase of IPHI Beam Power at CEA Saclay
Increase of IPHI Beam Power at CEA Saclay Open
For the first time, in April 2016, the SILHI source produced a proton beam for IPHI RFQ. Due to several technical difficulties on the RFQ water cooling skid, a short RF power pulse (100 μs at the beginning until few hundred microseconds) i…
View article: Space Charge Studies for the Ionisation Profile Monitors for the ESS Cold Linac
Space Charge Studies for the Ionisation Profile Monitors for the ESS Cold Linac Open
In this paper, we present the results from a numerical code developed to study the effect of space charge on the performance of Ionisation Profile Monitors. The code has been developed from the analytical expression of the electromagnetic …
View article: Ionization Profile Monitor Simulations - Status and Future Plans
Ionization Profile Monitor Simulations - Status and Future Plans Open
Nonuniformities of the extraction fields, the velocity distribution of electrons from ionization processes and strong bunch fields are just a few of the effects affecting Ionization Profile Monitor measurements and operation. Careful analy…
View article: The Linear IFMIF Prototype Accelerator (LIPAC) Design Development under the European-Japanese Collaboration
The Linear IFMIF Prototype Accelerator (LIPAC) Design Development under the European-Japanese Collaboration Open
The IFMIF aims to provide an accelerator-based, D-Li neutron source to produce high energy neutrons at sufficient intensity. Part of the BA agreement (Japan-EURATOM), the goal of the IFMIF/EVEDA project is to work on the engineering design…
View article: R&D on Micro-Loss Monitors for High Intensity Linacs like LIPAc
R&D on Micro-Loss Monitors for High Intensity Linacs like LIPAc Open
Before approaching the micro-loss monitor concept, we propose to present the high intensity Linac for which the R&D program was done, LIPAc (Linear IFIMIF Prototype Accelerator). This later is the feasibility accelerator demonstrator for t…