3D simulations and modeling of new low capacitance silicon pixel detectors

Xiong, Bo; Li, Yu Yun; Zheng, Li

doi:10.1016/j.nima.2016.02.079

Cited by 3 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2) Compared to the 3D electrode detector, their electric field distribution is better with only radius r dependence in both strength and direction and the least non-uniformity in r [1,16,17]. (3) They have smaller capacitance due to the dot-like collection electrode than the planer and 3D column collection electrode [22,23]. The capacitance is mainly related to the volume of the collected detector, and that is why the dot-like collection electrode results in a smaller capacitance than the planer and 3D column collection electrode.…”

Section: The Hypothetic 'Dream' Sphere-electrode Detectors In Spheric...mentioning

confidence: 99%

Theoretical bases of hypothetical sphere-electrode detectors and practical near-sphere-electrode (semisphere-electrode and near-semisphere-electrode) detectors

Liu¹,

Lu²,

Zheng³

2020

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

In this work, one-dimensional (1D) modeling and simulations of the electric and weighting fields will be systematically carried out for hypothetical sphere-electrode detectors. Exact 1D solutions are obtained for electric and weighting fields in these detectors. Although it is impossible to realize hypothetical sphere-electrode detectors with current technologies, the theoretical work and results on them are good bases for their offspring—practical semi-sphere-electrodes (semisph-electrode) and near-semisph-electrode detectors. The great reduction in full depletion voltage and small capacitance in semisph-electrode and near-semisph-electrode detectors make them very good for applications in photon sciences (x-ray) and safeguard and homeland security (hard x-ray and gamma-ray). A practical novel structure of the three-dimensional (3D) trench electrode detector, namely a novel semisph-electrode silicon detector has been proposed as a practical example. The novel detector has a semispherical shell electrode created in a cuboidal unit cell. It will overcome the traditional 3D-electrode detector deficiencies in electrical performance such as the asymmetrical electric field distribution. Through a computer-aided design tool, 3D modeling and electrical characteristics, simulation of a semispherical electrode silicon detector has been obtained, such as electric field distributions, electron concentration distribution, and full depletion voltage

show abstract

Section: The Hypothetic 'Dream' Sphere-electrode Detectors In Spheric...mentioning

confidence: 99%

Theoretical bases of hypothetical sphere-electrode detectors and practical near-sphere-electrode (semisphere-electrode and near-semisphere-electrode) detectors

Liu¹,

Lu²,

Zheng³

2020

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Design and simulation of a new silicon pixel detector with equal width floating electrodes

Huang

Xiao

et al. 2021

AIP Advances

View full text Add to dashboard Cite

In order to reduce the noise of traditional silicon pixel detectors, a new type of low-capacitance silicon pixel detector with three floating electrodes is proposed in this paper, which reduces the cathode area while keeping the volume unchanged. A TCAD simulator is used to simulate the electrical performance of the detector and obtain electrical characteristics including depletion voltage, capacitance, and leakage current. According to the results of simulation and calculation, compared with the traditional silicon pixel detector with the same volume, the capacitance of the detector without floating electrodes was reduced by 68%, the capacitance of the detector with three floating electrodes was reduced by 68%, and the leakage current was reduced by two orders of magnitude.

show abstract

Design and simulation of silicon detector cells with spiral ring electrode structures

Liu

Zheng

2021

AIP Advances

View full text Add to dashboard Cite

Traditional pixel detectors are neatly arranged rectangular or square electrodes that cover almost the entire surface. Large electrode areas lead to high capacitance, and capacitance is the primary factor affecting detector noise. A large noise signal will reduce detector detection performance and the system S/N ratio. We have designed a spiral ring electrode silicon detector cell with n-type silicon bulk and systematically studied its electrical properties, including electric potential distribution, electric field distribution, electron concentration distribution, leakage current, full depletion voltage, and detector capacitance. It has been verified that the spiral ring electrode silicon detector has a smaller capacitance than the traditional detector and a smaller depletion voltage compared with the previously designed structures such as the inner circle broom-shaped structure. At the same time, high position resolution pixel detectors can be made by the array of these detector cells.

show abstract

3D simulations and modeling of new low capacitance silicon pixel detectors

Cited by 3 publications

References 10 publications

Theoretical bases of hypothetical sphere-electrode detectors and practical near-sphere-electrode (semisphere-electrode and near-semisphere-electrode) detectors

Theoretical bases of hypothetical sphere-electrode detectors and practical near-sphere-electrode (semisphere-electrode and near-semisphere-electrode) detectors

Design and simulation of a new silicon pixel detector with equal width floating electrodes

Design and simulation of silicon detector cells with spiral ring electrode structures

Contact Info

Product

Resources

About