A study of silicon sensor for ILD ECAL

Tatsuhiko Tomita; Shion Chen; Daniel Jeans; Yoshio Kamiya; Kiyotomo Kawagoe; Sachio Komamiya; Chihiro Kozakai; Yohei Miyazaki; Taikan Suehara; Yuji Sudo; Hiraku Ueno; Tamaki Yoshioka

A study of silicon sensor for ILD ECAL

Tatsuhiko Tomita, Shion Chen, Daniel Jeans, Yoshio Kamiya, Kiyotomo Kawagoe, Sachio Komamiya, Chihiro Kozakai, Yohei Miyazaki, Taikan Suehara, Yuji Sudo, Hiraku Ueno, Tamaki Yoshioka

Waseda Research Institute for Science and Engineering

Research output: Contribution to conference › Paper

Abstract

The International Large Detector (ILD) is a proposed detector for the International Linear Collider (ILC) [1, 2]. It has been designed to achieve an excellent jet energy resolution by using Particle Flow Algorithms (PFA) [3], which rely on the ability to separate nearby particles within jets. PFA requires calorimeters with high granularity. The ILD Electromagnetic Calorimeter (ECAL) is a sampling calorimeter with thirty tungsten absorber layers. The total thickness of this ECAL is about 24 X₀, and it has between 10 and 100 million channels to make high granularity. Silicon sensors are a candidate technology for the sensitive layers of this ECAL. Present prototypes of these sensors have 256 5.5×5.5 mm² pixels in an area of 9×9cm². We have measured various properties of these prototype sensors: the leakage current, capacitance, and full depletion voltage. We have also examined the response to an infrared laser to understand the sensor’s response at its edge and between pixel readout pads, as well the effect of different guard ring designs. In this paper, we show results from these measurements and discuss future works.

Original language	English
Publication status	Published - 2013 Jan 1
Event	2013 International Workshop on Future Linear Colliders, LCWS 2013 - Tokyo, Japan Duration: 2013 Nov 11 → 2013 Nov 15

Conference

Conference	2013 International Workshop on Future Linear Colliders, LCWS 2013
Country	Japan
City	Tokyo
Period	13/11/11 → 13/11/15

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Tomita, T., Chen, S., Jeans, D., Kamiya, Y., Kawagoe, K., Komamiya, S., Kozakai, C., Miyazaki, Y., Suehara, T., Sudo, Y., Ueno, H., & Yoshioka, T. (2013). A study of silicon sensor for ILD ECAL. Paper presented at 2013 International Workshop on Future Linear Colliders, LCWS 2013, Tokyo, Japan.

A study of silicon sensor for ILD ECAL. / Tomita, Tatsuhiko; Chen, Shion; Jeans, Daniel; Kamiya, Yoshio; Kawagoe, Kiyotomo; Komamiya, Sachio; Kozakai, Chihiro; Miyazaki, Yohei; Suehara, Taikan; Sudo, Yuji; Ueno, Hiraku; Yoshioka, Tamaki.

2013. Paper presented at 2013 International Workshop on Future Linear Colliders, LCWS 2013, Tokyo, Japan.

Research output: Contribution to conference › Paper

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AU - Tomita, Tatsuhiko

AU - Chen, Shion

AU - Jeans, Daniel

AU - Kamiya, Yoshio

AU - Kawagoe, Kiyotomo

AU - Komamiya, Sachio

AU - Kozakai, Chihiro

AU - Miyazaki, Yohei

AU - Suehara, Taikan

AU - Sudo, Yuji

AU - Ueno, Hiraku

AU - Yoshioka, Tamaki

PY - 2013/1/1

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N2 - The International Large Detector (ILD) is a proposed detector for the International Linear Collider (ILC) [1, 2]. It has been designed to achieve an excellent jet energy resolution by using Particle Flow Algorithms (PFA) [3], which rely on the ability to separate nearby particles within jets. PFA requires calorimeters with high granularity. The ILD Electromagnetic Calorimeter (ECAL) is a sampling calorimeter with thirty tungsten absorber layers. The total thickness of this ECAL is about 24 X0, and it has between 10 and 100 million channels to make high granularity. Silicon sensors are a candidate technology for the sensitive layers of this ECAL. Present prototypes of these sensors have 256 5.5×5.5 mm2 pixels in an area of 9×9cm2. We have measured various properties of these prototype sensors: the leakage current, capacitance, and full depletion voltage. We have also examined the response to an infrared laser to understand the sensor’s response at its edge and between pixel readout pads, as well the effect of different guard ring designs. In this paper, we show results from these measurements and discuss future works.

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