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LCTPC WP Phone Meeting #71 – 26.11.2008Micromegas module1 D. Attié, P. Colas, M. Dixit, Yun-Ha Shin, R. Woods TPC Tests Analysis Meeting, DESY 28 May 2009.

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Presentation on theme: "LCTPC WP Phone Meeting #71 – 26.11.2008Micromegas module1 D. Attié, P. Colas, M. Dixit, Yun-Ha Shin, R. Woods TPC Tests Analysis Meeting, DESY 28 May 2009."— Presentation transcript:

1 LCTPC WP Phone Meeting #71 – 26.11.2008Micromegas module1 D. Attié, P. Colas, M. Dixit, Yun-Ha Shin, R. Woods TPC Tests Analysis Meeting, DESY 28 May 2009 Comparison of kapton and ink resistive detectors

2 Description of the detectors 2 DetectorDielectric layerResistive layer Resistivity (MΩ/□) Resistive Kapton Kapton 70 μm C-loaded Kapton 25 μm ~4-8 Resistive Ink Epoxy-glass 100 μm Ink (3 layers) ~50 μm ~1-2 TPC Tests Analysis Meeting- Resistive detectors comparison - Resistive KaptonResistive Ink PCB Kapton Resistive Kapton PCB Prepreg Resistive Ink Glue 1-2 μm Glue 1-2 μm

3 Comparison at B=1T, z ~ 5 cm 3 TPC Tests Analysis Meeting- Resistive detectors comparison - Resistive KaptonResistive Ink RUN 310 v drift = 230 cm/μs V mesh = 380 V Peaking time: 500 ns Frequency Sampling: 25 MHz RUN 549 V drift = 230 cm/μs V mesh = 360 V Peaking time: 500 ns Frequency Sampling: 25 MHz Dead pad: [row: 54; column: 18]

4 Pad Response Functions Resistive Kapton 4 TPC Tests Analysis Meeting- Resistive detectors comparison - Resistive Ink Γ = 6.6 mm δ = 10.4 mm Γ = 10.8 mm δ = 12.7 mm

5 Spatial resolution at z = 4.3 cm 5 TPC Tests Analysis Meeting- Resistive detectors comparison - Resistive KaptonResistive Ink σ [z=4,3 cm] = 130 μm σ [z=4,3 cm] = 72 μm

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