Monte Carlo introduction

• Francesco Cerutti (CERN)

Room: 37/R-022 The role of the Monte-Carlo method in radiation calculations is discussed, highlighting its advantages and limitations. Probability distributions and sampling techniques are introduced, and the behavior of statistical uncertainty is characterized. The framework adopted for the simulation of particle transport and interactions is described, distinguishing between continuous and discrete processes. While the first ones are dealt with by a condensed history approach, the latter ones are treated according to a scheme coupling integral cross section evaluations, used to determine when a given type of interaction occurs, and physics models returning its final products. The relevance of users' choices in Monte-Carlo simulations is discussed, with specific reference to standard and custom cutoff values limiting the transport of low-energy particles. Typical scored quantities are critically reviewed. The concept of biased simulation is explained and its potential is highlighted, indicating different available options and reporting some illustrative examples.

Timepix3 Radiation Monitor applications

• Daniel Prelipcean (CERN)

Room: 37/R-022 The characterisation and the usages of a Timepix3 Radiation Monitor within the Radiation to Electronics (R2E) community are summarised in this presentation. The Timepix technology presents several capabilities that are of interest for R2E monitoring activities at CERN accelerators, among which are: (i) the measurement of single-particle hits with good timing resolution, and (ii) the pixel-by-pixel measurement of the deposited energy. The detector has been calibrated using charged particles (protons and alphas), and irradiated with neutrons from meV to the MeV range, in order to better understand the detector response. By exploiting the features of the Timepix3 detector, the foreseen usage at CERN accelerators includes the existing standard monitoring of the Total Ionizing Dose (TID) and the flux measurement of high energy hadrons. Moreover, it could also be used to measure charged particles, as well as a possible tool to identify the spatial origin of the losses by exploring the directionality information from the pixel array. In all cases, the good timing resolution and the low threshold of the Timepix3 detector can enable the prompt detection of beam losses even in lower radiation areas such as the shielded alcoves of the accelerators, where electronics are typically located.

Ionizing radiation effects in electronics for particle detectors (TID and SEE)

• Giulio Borghello (CERN)

Room: 37/R-022 CERN's Large Hadron Collider (LHC) is undergoing a major upgrade that will increase its luminosity by a factor of 10. The new High-Luminosity LHC (HL-LHC) will advance the frontier of knowledge in particle physics, but it also poses an unprecedented challenge in the design of the electronics for its particle detectors. The inner layers of the new detectors will have to withstand levels of total ionizing dose (TID) up to 1 Grad (10 MGy) and fluences in the order of 10¹⁶ neq/cm² after 10 years of operation. This talk illustrates the main effects caused by these extreme radiation levels on the commercial CMOS technologies used in the design of application-specific integrated circuits (ASICs) for particle detectors, showing the consequences of these effects both at transistor level and on complex chips. Particular attention will be given to the mechanisms of charge transport and trapping in MOS transistor oxides, as well as the design strategies employed to mitigate the impact of single-event effects (SEEs).

CHARM and IRRAD Visits

• Natalia Emriskova (CERN)
• Salvatore Fiore (CERN)

SEEs in accelerator radiation environment and test facilities

• Matteo Cecchetto (CERN)

Room: 37/R-022 The talk introduces the radiation environment in the Large Hadron Collider (LHC) accelerator at CERN, including comparisons with the atmospheric environment. It provides insights into radiation-induced effects in electronics, focusing on Single Event Effects (SEE), which are triggered by a single hadron. Moreover, the methods to measure and simulate radiation levels in the accelerator are described. The presentation highlights the role of neutrons, particularly thermal neutrons and those in the 0.1–10 MeV energy range, which can induce more electronics failures than higher-energy neutrons in locations of the accelerator. Finally, an overview of the test facilities for electronics testing is provided.

Residual Radiation - Hadron & Ion Accelerators

• Chris Theis (CERN)

Room: 37/R-022 The lecture will conceptually and visually illustrate the difference between prompt and residual radiation observed at high energy hadron/ion accelerators. It will introduce the basic concepts of calculating residual dose rates and shielding in an analytic way with an outlook towards superior Monte Carlo based methods. The final discussion will focus on measurement techniques and associated instrumentation in the context of Radiation Protection applications

Electronic reliability in the nuclear fusion radiation environment of tokamaks

• Martin Felix Dentan (CERN)

Room: 37/R-022 We give a brief overview of tokamaks, their electronics and their radiation environment. Then we present the main effects of these radiations on electronics, with emphasis on neutron-induced SEEs. We then explain how to ensure the reliability of electronics in the radiation environment of tokamaks. Finally, we present the studies carried out on this subject in the JET tokamak during the 2023 deuterium-tritium plasma pulse campaign during which a new world energy record for controlled fusion energy was established.

Monte Carlo applications: Radiation to Electronics and Single Event Effects

• Ruben Garcia Alia (CERN)

Room: 37/R-022

Science Gateway Individual Visit

Introduction and spatial environment

• Damien Herrera (TRAD)

Room: 37/R-022

OMERE presentation

• Damien Herrera (TRAD)

Room: 37/R-022

SEE

• Kévin Lemière (TRAD)

Room: 37/R-022

RHA

• Kévin Lemière (TRAD)

Room: 37/R-022

TP OMERE environment

• Damien Herrera (TRAD)
• Kevin Lemière (TRAD)

Room: 37/R-022

TP OMERE SEE

• Kevin Lemière (TRAD)
• Damien Herrera (TRAD)

Room: 37/R-022

FASTRAD 1/2

• Kevin Lemière (TRAD)
• Damien Herrera (TRAD)

Room: 37/R-022

TP FASTRAD

• Damien Herrera (TRAD)
• Kevin Lemière (TRAD)

Room: 37/R-022

FASTRAD 2/2

• Damien Herrera (TRAD)
• Kevin Lemière (TRAD)

Room: 37/R-022

TP FASTRAD

• Damien Herrera (TRAD)
• Kevin Lemière (TRAD)

Room: 37/R-022

TP Radiation analysis

• Kevin Lemière (TRAD)
• Damien Herrera (TRAD)

Room: 37/R-022