2nd DRD3 week on Solid State Detectors R&D

Session

WG3 - Radiation Damage

4 Dec 2024, 09:00

500/1-001 - Main Auditorium (CERN)

Conveners

WG3 - Radiation Damage: WG3 - Radiation Damage

• Joern Schwandt (Hamburg University (DE))
• Ioana Pintilie (National Inst. of Materials Physics (RO))

23. Timing and CCE Performance of the LGAD from Teledyne e2v

Dengfeng Zhang (University of Sheffield (GB))

04/12/2024, 09:00

WG3 Radiation Damage - Extreme Fluence

Owing to their timing capabilities, of the order of 50 ps or better for MIP, Low Gain Avalanche Detector (LGAD) have been chosen for next-generation timing detectors at the HL-LHC and other high-energy physics experiments. Both ATLAS and CMS collaborations have adopted them as baseline sensors for the High Granularity Timing Detector (HGTD) and MIP Timing Detector (MTD) in their...

36. Carrier recombination characteristics in neutron irradiated Si at extreme fluences

Tomas Ceponis (Vilnius University)

04/12/2024, 09:20

WG3 Radiation Damage - Extreme Fluence

The carrier recombination properties of semiconductors are critically influenced by defect species introduced by irradiations. In particle detectors, a reduction in carrier lifetime correlates with the degradation of charge collection efficiency and with an increase of leakage current. To develop radiation hard particle sensors and to predict variations of sensor functional parameters with...

39. Assessment of electronic structure and metastabilities of complex defects in boron doped silicon samples following irradiation at high fluences

George Alexandru Nemnes (Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering)

04/12/2024, 09:40

WG3 Radiation Damage - Extreme Fluence

We present the research activities within the DRD3 project proposal “Radiation damage in Boron-doped Silicon diodes and LGAD sensors”, relevant to understanding radiation damage in silicon. One of the main objectives is the defect characterization at microscopic level in boron doped silicon subject to extreme irradiation fluences (2x10$^{16}$ n$_{\rm eq}$/cm$^2$) and establish the role of B,...

47. Defect investigation in irradiated ATLAS18 ITk Strip Sensors using transient spectroscopy techniques

Christoph Thomas Klein (Carleton University (CA))

04/12/2024, 10:00

WG3 Radiation Damage - Extreme Fluence

With the upgrade of the LHC to the High-Luminosity LHC (HL-LHC), the Inner Detector will be replaced with the new all-silicon ATLAS Inner Tracker (ITk) to maintain tracking performance in a high-occupancy environment and to cope with the increase in the integrated radiation dose.
Comprising an active area of 165m$^2$, the outer four layers in the barrel and six disks in the endcap region...

63. Development of Position Sensitive Deep Transient Spectroscopy as a background mitigation tool for CCD-based dark matter searches

Dr Vagelis Gkougkousis (University of Zurich)

04/12/2024, 10:20

WG3 Radiation Damage - Extreme Fluence

The unparalleled sensitivity achieved with skipper CCDs, coupled with ultra-pure high-resistivity substrates (>22 kOhm×cm) and cryogenic operation, has rekindled interest in this technology for low-background experiments (DAMIC@SNOLAB, DAMIC-M, SENSEI, and OSCURA) Such devices offer sub-electron noise resolution, enabling the detection of extremely low-energy interactions critical for...

32. Measurement on Prototype of Double-Sided 3D Sensors Produced by CNM

chuan liao (The High Energy Accelerator Research Organization)

04/12/2024, 11:10

WG3 Radiation Damage - Extreme Fluence

To meet the high radiation hardness and timing resolution requirements of high-energy physics experiments, we present an initial investigation into double-sided 3D sensors with various geometrical structures developed by CNM. We evaluated their electrical performance through I-V and C-V measurements and compared the results with TCAD Silvaco simulations and theoretical estimations. Initial...

21. Impact of a magnetic field on integrated low-temperature photoluminescence of quenched silicon

Kevin Lauer (CIS Institut fuer Mikrosensorik GmbH (DE))

04/12/2024, 11:30

WG3 Radiation Damage - Extreme Fluence

Kevin Lauer,$^{1,2}$ Katharina Peh,$^{2}$ Dirk Schulze,$^{2}$ Stefan Krischok,$^{2}$ Mario Bähr,$^{1}$ Richard Grabs,$^{1}$ Frank Long,$^{1,3}$ Martin Kaleta,$^{1}$ Andreas Frank$^{1}$ and Thomas Ortlepp$^{1}$

$^{1}$CiS Forschungsinstitut für Mikrosensorik GmbH, Konrad-Zuse-Str. 14, 99099 Erfurt, Germany
$^{2}$Technische Universität Ilmenau, Institut für Physik, Weimarer Str. 32, 98693...

12. Updates on the PAB Project

Valentina Sola (Universita e INFN Torino (IT))

04/12/2024, 11:50

WG3 Radiation Damage - Extreme Fluence

Updates on the ongoing activities of the Partial Activation of Boron (PAB) common project will be given.

11. Updates on Thins Silicon Sensors for the eXtreme Fluences

Valentina Sola (Universita e INFN Torino (IT))

04/12/2024, 12:10

WG3 Radiation Damage - Extreme Fluence

An update on the recent progress from the investigation on thin silicon sensors for extreme fluences will be given.
Results from thin sensors with and without gain will be presented and an overview of future developments will be discussed.

8. Radiation tolerance and annealing studies at various temperatures using test-structure diodes from 8-inch silicon sensors for CMS HGCAL

Leena Diehl (CERN)

04/12/2024, 12:30

WG3 Radiation Damage - Extreme Fluence

To face the higher levels of radiation due to the 10-fold increase in integrated luminosity during the High-Luminosity LHC phase, the CMS collaboration will replace the current calorimeter endcaps with the new High-Granularity Calorimeter (HGCAL) concept. It will facilitate the use of particle-flow calorimetry with its unprecedented transverse and longitudinal readout/trigger segmentation,...

86. Sensors Journal - Special Issue (2nd Edition)

Michael Moll (CERN), Xin Shi (Institute of High Energy, CAS)

04/12/2024, 12:50

7. Simulation of Irradiation Damage and Defect Evolution Induced by Neutrons in LGAD

Wei Li (Xi’an Jiaotong University)

04/12/2024, 13:50

WG4 - Simulations

The introduction of carbon doping in Low Gain Avalanche Detectors (LGADs) has been shown to effectively mitigate neutron-irradiation-induced acceptor removal effects. However, the microscopic mechanism behind this phenomenon remains unclear. In this study, Monte Carlo (MC) simulations model the effects of 1 MeV neutrons in critical regions in LGAD, providing data on the energy and spectrum of...

66. Status of defect investigations in Si and SiC

Ioana Pintilie (National Inst. of Materials Physics (RO))

04/12/2024, 14:10

WG3 Radiation Damage - Extreme Fluence

We will present an overview of the on-going investigations of radiation induced defects in Si and SiC sensors performed within WG3 group.

69. WG3 - Discussion on Radiation Damage

Ioana Pintilie (National Inst. of Materials Physics (RO)), Dr Joern Schwandt (Hamburg University (DE))

04/12/2024, 14:30

75. Evidence of Charge Multiplication in Thin $25 \mathrm{\mu m} \times 25 \mathrm{\mu m}$ Pitch 3D Silicon Sensors

Andrew Donald Gentry (University of New Mexico (US))

WG3 Radiation Damage - Extreme Fluence

Characterization measurements of $25~\mathrm{\mu m} \times 25~\mathrm{\mu m}$ pitch 3D silicon sensors are performed, for devices with active thickness of $150~\mu$m. Evidence of charge multiplication caused by impact ionization below the breakdown voltage is observed in sensors operated at $-45~^\circ\mathrm{C}$. Small-pitch 3D silicon sensors have potential as high precision 4D tracking...