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![Page 1: LC Tracking Review at Amsterdam 2003.03.31 Overview of Asian Tracking R&D Vertex Detector Silicon µ-Strip Intermediate Tracker Central Tracker - Jet Chamber.](https://reader036.fdocuments.in/reader036/viewer/2022062500/5697bfa21a28abf838c961f2/html5/thumbnails/1.jpg)
LC Tracking Review at Amsterdam2003.03.31
Overview of Asian Tracking R&D
• Vertex Detector• Silicon µ-Strip Intermediate Tracker• Central Tracker - Jet Chamber - Si µ-strip Central Tracker
Hwanbae ParkKyungpook National Univ.
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LC Tracking Review at Amsterdam2003.03.31
▣ JLC: Tracker
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LC Tracking Review at Amsterdam2003.03.31
▣ Vertex Tracker Working Group
• CCD based Vertex Tracker Group Y. Sugimoto*, A. Miyamoto (KEK) N. Tamura, G. Iwai, K. Fujiwara, H. Takayama (Niigate U.) K. Abe, T. Nagamine (Tohoku U.) T. Aso (Toyama National College of Maritime Technology)
http://www-jlc.kek.jp/subg/svd/
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LC Tracking Review at Amsterdam2003.03.31
S/N > 10 @278K
Intrinsic ResolutionIs better than 3 um.
√ operation at near room temperature√ spatial resolution, S/N ratio√ partially thinned wafers√ radiation hardness√ fast readout
▣ R&D Activities: Vertex Tracker
![Page 5: LC Tracking Review at Amsterdam 2003.03.31 Overview of Asian Tracking R&D Vertex Detector Silicon µ-Strip Intermediate Tracker Central Tracker - Jet Chamber.](https://reader036.fdocuments.in/reader036/viewer/2022062500/5697bfa21a28abf838c961f2/html5/thumbnails/5.jpg)
LC Tracking Review at Amsterdam2003.03.31
▣ Intermediate Tracker Working Group
• Silicon Intermediate Tracker Group H. Park* (Kyungpook National U.) I.H. Park (Ewha Womans U.), B.G. Cheon (SKKU) H.J. Kim, J.H. Kang, Y.J. Kwon (Yonsei U.) J.S. Kang (Korea U.), S. Kim, J. Lee (SNU)
76.5cm
18.5cm
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LC Tracking Review at Amsterdam2003.03.31
√ linking and reconstruction efficiency (Fast Simulation) √ track momentum resolution (Full Simulation) √ Si PIN diode simulation/design/fabrication √ S/N ratio measurement and beam test
▣ R&D Activities: Intermediate Tracker
Si
Bare Si wafer
Oxidation
N+ (Diffusio
n)
UVMask 1
Photo Lithography
Oxide Etching
Photo-resist Strip
P+ (Implantatio
n)Mask2
UV
Photo Lithography
Photo-resist Strip
Metal deposition
Metal Etching
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LC Tracking Review at Amsterdam2003.03.31
▣ Central Tracker Working Group • Jet Chamber Si µ-strip M. Kobayashi*, K. Fujii (KEK) M. Iwasaki*, H. Aihara N. Khalatyan (U. of Tsukuba) (U. of Tokyo) A.M. Bacala (MSU), K. Hoshina (TUAT) T. Abe (Nagoya U.),K. Watanabe (Kogakuin U.)
http://www-jlc.kek.jp/subg/cdc/
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LC Tracking Review at Amsterdam2003.03.31
• 4.6 m Test Jet Chamber (6 axial and 10 stereo super layers) √ measurements of wire tensions and positions √ cosmic ray tests with a candidate gas mixtures √ space charge effect measurement √ basic chamber studies with “baby” chamber √ spatial and momentum resolution √ two track separation √ wire material studies √ full CDC detector simulator based on Geant4
▣ R&D Activities: Jet Chamber
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LC Tracking Review at Amsterdam2003.03.31
(with NLC detector parameters)√ Full Simulation Study for detector parameter√ reconstruction efficiency√ momentum resolution√ photon background simulation
▣ R&D Activities: Si µ-strip central tracker
- - - #hit1 in central & #VXD hit=5
- - - #hit2 in central & #VXD hit=5- - - #hit3 in central- - - #hit=5 in central
|cos|<0.8
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LC Tracking Review at Amsterdam2003.03.31
▣ Summary
□ Vertex Detector - spatial resolution and distortion of thin wafers measured - innermost layer survive more than 3 years under option “A” - radiation damage effect studied□ Intermediate Tracker - fast and full simulation with 5 layers - Si µ-strip R&D proposal submitted (pending)□ Central Tracker - chamber parameters studied with “baby chamber” - track momentum and two track separation - Si µ-strip R&D started (detail simulation studies carried)