7–10 Nov 2023
SLAC
America/Los_Angeles timezone

Investigation of low gain avalanche detectors exposed to proton fluences beyond $10^{15}\;n_{eq}cm^{-2}$

9 Nov 2023, 16:00
15m
53/1-1350-A - Trinity-A (SLAC)

53/1-1350-A - Trinity-A

SLAC

65
Oral RDC3: Solid State Tracking RDC3+4+11

Speaker

Jiahe Si (University of New Mexico)

Description

Low gain avalanche detectors (LGADs) promise excellent timing resolution, which can mitigate mis-assignment of vertices associated with pileup at the High Luminosity LHC and other future hadron colliders. The most highly irradiated LGADs will be subject to $2.5\times 10^{15}\;n_{eq}cm^{-2}$ of hadronic fluence during HL-LHC operation; their timing performance must tolerate this. Hamamatsu Photonics K.K. and Fondazione Bruno Kessler LGADs have been irradiated with 400 and 500 MeV protons respectively in several steps up to $1.5\times 10^{15}\;n_{eq}cm^{-2}$. Measurements of the acceptor removal constants of the gain layers, evolution of the timing resolution and charge collection with damage, and inter-channel isolation characteristics, for a variety of design options, are presented here.

Early Career No

Primary authors

Jiahe Si (University of New Mexico) Josef Sorenson (University of New Mexico) Martin Hoeferkamp (University of New Mexico) Sally Seidel (University of New Mexico) Gregor Kramberger (Jozef Stefan Institute)

Presentation materials