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Development of a double-sided ladder for tracking in high-energy physics

Abstract : The PLUME project develops ultra-light pixelated layers with specifications driven by the design of a vertex detector at the future e+e- International Linear Collider (ILC). The ILC will give access to final states like Hνν, as this work demonstrates for centre-of-mass energy 350GeV and a luminosity of 250 fb-1. PLUME devices exploit the concept of double-sided ladder spaved with thinned CMOS pixel sensors in order to reach a material budget of 0.35 % of radiation length. The present study validated that simultaneous operation of the 12 CMOS sensors integrated on such light ladders do not impact their electrical behaviour. Surface deformations were observed but a specific algorithm during the off- line analysis was proposed and successfully tested to preserve the native sensor spatial resolution. Finally, a measurement of the material budget of a less advanced ladder prototype has been performedat DESY test beam and yield 0.47±0.02 % of radiation length, matching the expected value.
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Submitted on : Monday, July 2, 2018 - 9:01:06 AM
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Benjamin Boitrelle. Development of a double-sided ladder for tracking in high-energy physics. Physics [physics]. Université de Strasbourg, 2017. English. ⟨NNT : 2017STRAE033⟩. ⟨tel-01827266⟩

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