4th DRD3 week on Solid State Detectors R&D

Session

Joint WG2-WG3

12 Nov 2025, 09:00

6/2-024 - BE Auditorium Meyrin (CERN)

57. Gain supression studies on IMB-CNM LGAD detectors

Jairo Antonio Villegas Dominguez (Consejo Superior de Investigaciones Cientificas (CSIC) (ES))

12/11/2025, 09:00

WG2 - Hybrid silicon sensors

Low Gain Avalanche Detectors (LGADs) have recently emerged as key sensors for precise timing measurements, enabling accurate tracking of charged particles and photons in High Energy Physics (HEP) experiments and beyond. The time resolution is closely linked to the detector's gain, with a direct correlation between gain stability and timing precision. In turn, the gain of LGADs depends on the...

68. Gain Suppression Study in LGADs with Different Gain Layers

Leo Cavazzini

12/11/2025, 09:18

WG2 - Hybrid silicon sensors

It was observed in several research groups that the gain of Low Gain Avalanche Diodes (LGADs) is significantly dependent on the amount of deposited charge and the angle of incidence of the interacting particle. In case of laser illumination, higher deposited charge results in lower gain values. Additionally, the focus of the laser is responsible for a decrease in the measured gain. The...

45. TI-LGADs for PPS2 Timing Detector Upgrade

Cristovao Beirao Da Cruz E Silva (Laboratory of Instrumentation and Experimental Particle Physics (PT))

12/11/2025, 09:36

WG3 Radiation Damage - Extreme Fluence

The PPS sub-detector of CMS, in operation since 2016, has shown exceptional performance, operating tracking and timing detectors in the challenging high radiation environment a few millimetres from the LHC beam. During Long Shutdown 3 the PPS detector will be upgraded with additional stations and a new timing detector based on LGAD+ETROC. The high and non-uniform irradiation requires dedicated...

42. Technological development and performance of Low Gain Avalanche Detectors with and without carbon co-doping at IMB-CNM

Florent Dougados (Consejo Superior de Investigaciones Cientificas (CSIC) (ES))

12/11/2025, 09:54

WG2 - Hybrid silicon sensors

IMB-CNM has been a main actor in the development of Low Gain Avalanche Detectors since the initial device conception, more than a decade ago.
One of the challenges for LGAD is the deterioration of the gain and timing resolution after radiation damage due to the acceptor removal mechanism.
A well-established solution to increase radiation tolerance is carbon co-doping in the gain...

31. Radiation hardness of 24 GeV proton and mixed irradiated LGADs for ATLAS High Granularity Timing Detector

Bojan Hiti (Jozef Stefan Institute (SI))

12/11/2025, 10:12

WG2 - Hybrid silicon sensors

ATLAS experiment will be upgraded with High Granularity Timing Detector (HGTD) for the high luminosity runs at Large Hadron Collider after 2029. It will utilize LGAD detectors placed in very harsh radiation environment. During the R&D phase sensors with carbon enriched gain layer were designed showing sufficient radiation hardness after reactor neutron irradiations of up to...

3. Proton Energy Dependence of Gain Layer Degradation in LGADs

Veronika Kraus (Vienna University of Technology (AT))

12/11/2025, 10:30

WG2 - Hybrid silicon sensors

Low Gain Avalanche Detectors (LGADs) have proven their suitability for precise timing in high-energy physics experiments and are therefore foreseen for the HL-LHC upgrades of the ATLAS and CMS detectors at CERN. Their performance, however, is limited by radiation-induced gain layer degradation, mainly due to acceptor removal. This study investigates irradiation with 18MeV, 24MeV, 400MeV and...