This introductory talk will be a quick tour throughout R2E’s exciting 2021, featuring the restart of the CERN injector chain and CHARM facility, the progress on a broad variety of radiation tolerant development, and significant advancement in a rich set of research activities and collaborations.
This presentation will provide an overview of R2E activities supported by the Knowledge Transfer group to maximize societal impact.
In addition to measured data from radiation monitors, FLUKA simulations are a critical tool to asses the radiation levels on electronic equipment at the LHC and in other CERN accelerators, transfer lines, and facilities, especially where no measurement is available and for predictions on future operation.
The main goal of the High-Level Dosimetry (HLD) at CERN is to determine the radiation levels at equipment located in the accelerator complex, hence contributing to the evaluation of their radiation lifetime. In this talk, an introduction to the service and a summary of the activities carried out during 2021 will be presented.
The Optical Fibre Dosimetry work package of the R2E project focuses on the development, deployment and operation of optical fibre based solutions for the monitoring of the radiation levels in the accelerators. In particular, the Distributed Optical Fibre Radiation Sensors (DOFRS) are systems deployed in the main machines of the accelerator complex (PSB, PS, SPS, and LHC).
The RHA process is meant at ensuring that the qualification process of the CERN electronic equipment is traceable and demonstrates the compliance with respect to the requirements for installation in the accelerator. The status of the related documentation is presented in the context of HL-LHC.
The CERN Cobalt-60 (CC60) facility serves different essential purposes in the context of the R2E project, including components screening, system testing, material testing, and R&D on radiation sensors. To face the increasing number of irradiation requests, a new 110 TBq Co-60 source, 17 times more active than the previous source, has been installed.
We will present the objectives and recent results from the joint research activities within the EU INFRAIA project RADNEXT. This includes recent results on radiation monitors, dosimeters and beam characterization, on the standardization of system level radiation qualification methodology, on cumulative total ionizing dose and displacement damage effects in electronics and finally on tools and...
Interaction Region 4 (IR4) hosting the RF cavities and several BI instruments generates a rather low radiation environment compared to the high luminosity experiments. Previously unstudied, this contribution presents the latest benchmark between FLUKA simulated and measured data for several radiation monitors for Run 2, together with future operation scenarios for HL-LHC.
SR represents a major loss source in high energy lepton colliders, such as the FCC-ee. At a beam energy of 182.5GeV, its spectrum makes it penetrate well beyond the vacuum chamber walls. In order to optimize its containment, dedicated absorbers are envisaged. Furthermore, energy deposition studies were performed to develop a shielding layout in the tunnel with the aim of reducing the impact on...
Direct ionization from low-energy protons has been a hot topic in the space community for 15 years. Recent experimental measurements suggest that it may be an issue for the accelerator as well. The study of this and other proton effects required further push in the development of reliable simulation tools.
The presentation discusses the challenges one has to face when testing FPGAs, proposing a testing methodology for the LHC environment focusing on the NG-Medium and the PolarFire results. These will be compared with other, currently used, FPGAs, the SmartFusion2 and ProASIC3. A failure rate estimation analysis for the HL-LHC environment is presented showing the advantages and disadvantages of each FPGA.
BatMON is a wireless, battery-powered radiation monitoring system for particle accelerators. The system can measure TID and High-Energy Hadron and Thermal Neutron fluences, thanks to the Floating-Gate dosimeter and SRAMs embedded in the sensor mezzanine. Its radiation qualification is complicated both by its low-power and wireless architecture, but also by the unavailability of CHARM. An...
In this talk, details of CERN's RHA will be presented with a focus on new test methods and research developed by the radiation test services to provide representative test conditions specific to CERN accelerator environments and provide reliable estimates of degradation and operating lifetime.
The Floating Gate Dosimeter (FGDOS) has finally reached the operational phase and is now embedded in the BatMON. A new method for enhancing the sensitivity has been investigated aiming to reduce the measurement time to assess the radiation levels in locations where the rate is extremely low. In another recent study, the FGDOS has been employed to explore an alternative technique for measuring...
SpaceRadMon is a radiation monitor device designed for CubeSats. It was developed with the knowledge/experience gained from RadMon. It is a flexible payload platform for Cubesat satellites, that can be embedded in several missions with little effort. Its radiation measurements capabilities are the same of the RadMon but with several sensors tailored for space application. In this presentation,...
The CHIMERA project aims at providing high energy (100 MeV - 1 GeV/n) heavy ions (Pb) to the CHARM facility for electronics irradiation testing. These beams will probe an interesting LET range combined with a high penetration depth in state-of-the-art electronics used in, e.g., space applications. The project status and outlook on the coming activities will be presented.
A test campaign was organized in the IRRAD facility at the PS with a two-fold objective: to precisely measure the time structure of the proton beam and to monitor the heavy-ion beam propagated down the T8 line in the scope of the CHIMERA project. A silicon diode enabled to perform various measurements with sampling frequencies ranging from 200 Hz up to 1GHz.
Tribological studies are fundamental to mechanical design and especially relevant in the high radiation environment around beam-intercepting devices. Although only few studies exist, the effect of radiation on organic compounds is highly variable and lubricant resistance can be the determining factor in equipment lifetime. Preliminary examination of first lubricant samples irradiated in...
A new irradiation station has been built and commissioned at CERN's n_ToF facility, enabling new types of neutron-dominated irradiations and activation studies. The irradiation setup is radiation tolerant and is handled remotely to reduce dose to operators. Pilot irradiations of commercial lubricants and O-ring materials started in July 2021, and recently concluded successfully, in compliance...
The new nToF NEAR station collimator was developed with the aim of profitting from the large neutron fluences generated at the nTOF target, which can be particularly useful for electronics testing. As a first activity, the high energy hadron flux was measured by means of SRAM memories and compared to that obtained with FLUKA simulations.
The characterization of the neutron field of medical LINACs in Oldenburg and PTB was performed through SRAM devices, whose neutron response was well characterized for CERN applications. The capability of the SRAMs, to measure the neutron fluxes below 10 MeV in this medical application, is evaluated and compared to FLUKA simulations.
The CLEAR facility enables a wide range of studies about radiation effects in electronics. Findings on flash effects, that can negatively affect SEU measurements, and on displacement damage from high-energy electrons are reported.
Radiation Induced Luminescence (RIL) based radiation detection has been investigated for different applications such as accelerators, space, medicine and nuclear plants. We are evaluating the potential use of specially RIL based optical fibre sensors for dosimetry, for both accelerator and space projects in collaboration with CNES and Laboratoire Hubert Curien. We will present here the most...
The PS-BGI data acquisition system, based around the Timepix3 pixel detector, was acquired by the R2E project in late 2020. Originally developed for beam loss monitoring applications, this setup has the potential of being one of the key instruments in providing valuable data for the radiation field assessment in the accelerator environment.
RADSAGA is a research and training EU funded project, which involved 30 partners, trained 15 Early-Stage Researchers, and made advancements on the design and qualification of radiation tolerant components and systems. Interdisciplinary training aiming at forming highly qualified professionals, network engagement, communication, and data sharing are key values for the project. The presentation...
The International Fusion Materials Irradiation Facility Demo Oriented NEutron Source (IFMIF-DONES) will be a novel research infrastructure for testing, validation and qualification of the materials to be used in a fusion reactor like DEMO. IFMIF DONES will mimic the conditions inside DEMO in terms of neutrons by the impact of a high-power deuteron beam onto a lithium target. Together with...
