Silicon is ubiquitous. It is the most common, versatile, and pure material in the
electronics industry, and it lends itself to myriad applications in particle physics
detectors. One of our main activities involves using a large quantity of planar silicon
sensors (600 m2) in the high granularity calorimeter (HGCAL) in the Compact Muon Solenoid (CMS) at
the High Luminosity Large Hadron Collider (HL-LHC). When completed in 2026, the integrated
neutron fluences will exceed 1016 neutrons per cm2 for the HGCAL, so it is absolutely critical that we understand the processes that
are at work in radiation damage and are able to simulate and quantitatively predict
diminishing detector performance under irradiation for any application. We have been
investigating many different test structures and sensors and characterizing their
properties. Some of the results are in our papers
- Modeling of surface-state induced inter-electrode isolation of n-on-p devices in mixed-field
and gamma-irradiation environments, N. Akchurin and T. Peltola, Submitted to NIM A; arXiv:2407.18415 [physics.ins-det]
(2024)
- A method to observe field-region oxide charge and inter-electrode isolation from CV-characteristics
of n-on-p devices, T. Abdilov, N. Akchurin, C. Carty, Y. Kazhykarim, V. Kuryatkov, T. Peltola, A.
Wade, JINST 19 P09010, arXiv:2402.04365 [physics.ins-det] (2024)
- Neutron irradiation and electrical characterisation of the first 8" silicon pad sensor
prototypes for the CMS calorimeter endcap upgrade, B. Acar et al, JINST 8, P08024 (2023)
- Modeling of Surface Damage at the Si/SiO2-interface of Irradiated MOS-capacitors, N. Akchurin, Y. Kazhykarim, V. Kuryatkov, T. Mengke, T. Peltola, et al, JINST 18
P08001 (2023)
- Simulations of Silicon Radiation Detectors for High Energy Physics Experiments, B. Nachman, T. Peltola. Contributing authors: P. Asenov, M. Bomben, R. Lipton, F.
Moscatelli, E. A. Narayanan, F. R. Palomo, D. Passeri, S. Seidel, X. Shi, J. Sonneveld,
arXiv:2203.06216, March 2022
- Charge Collection and Electrical Characterization of Neutron Irradiated Silicon Pad
Detector for the CMS High Granularity Calorimeter, JINST 15 (2020) P09031
Our team continues to investigate new types of silicon detectors for future applications
through TCAD simulations, sample fabrication, and characterization.
