MuPix10: First Results from the Final Design

Augustin, Heiko; Berger, N.; Dittmeier, Sebastian; Immig, D.; Kim, Dohun; Mandok, Lukas; Gonzalez, Annie Meneses; Menzel, Marius; Noehte, L.; Perić, I.; Schmidt, Alexander; Schöning, A.; Vigani, L.; Weber, A.; Weinläder, Benjamin

doi:10.7566/jpscp.34.010012

Cited by 9 publications

(10 citation statements)

References 9 publications

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“…The time difference shows a sigma of 332 ns. Taking into account that the detector was not fully calibrated, the measured resolution is in line with the results observated in various MuPix testbeams [8].…”

Section: First Results Of the Mu3e Integration Run 2021supporting

confidence: 85%

Mu3e Integration Run 2021

Köppel¹

2022

Preprint

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The Mu3e experiment at the Paul Scherrer Institute searches for the charged lepton flavor violating decay 𝜇 + → 𝑒 + 𝑒 + 𝑒 − . The experiment aims for an ultimate sensitivity of one in 10 16 𝜇 decays. The first phase of the experiment, currently under construction, will reach a branching ratio sensitivity of 2.5 × 10 −15 by observing 10 8 𝜇 decays per second over a year of data taking. The highly granular detector based on thin high-voltage monolithic active pixel sensors (HV-MAPS) and scintillating timing detectors will produce about 100 GB/s of data at these particle rates. The Field Programmable Gate Array (FPGA) based Mu3e Data Acquisition System will read out this data from the detector and reduce the event rate to 100 MB/s by selecting interesting events using a filter farm of graphics processing units. The paper presents the status of the data acquisition system (DAQ) and first results from the 2021 integration run, which for the first time operated a slice of the Mu3e detector at the 𝜋E5 muon beam line at the Paul Scherrer Institute (PSI).

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Section: First Results Of the Mu3e Integration Run 2021supporting

confidence: 85%

Mu3e Integration Run 2021

Köppel¹

2022

Preprint

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“…This is a fully working prototype using MuPix10 MAPS chips [16]. The detector was successfully operated to observe cosmic ray muons [17] as well as with muons from the Paul Scherrer Institut (PSI) secondary beamline πE5 [18].…”

Section: Mupix10 Vertex Detector Prototypementioning

confidence: 99%

“…The temperature is determined for two specific chip heat loads, which are 215 mW/cm 2 and 350 mW/cm 2 . The first is the nominal heat dissipation found in MuPix10 laboratory studies [16]. The second is a conservative limit the cooling system is designed for.…”

Section: Silicon Heater Detector Mock-upmentioning

confidence: 99%

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Successful cooling of a pixel tracker using gaseous helium: studies with a mock-up and a detector prototype

Theodor¹,

Aeschbacher²,

Deflorin³

et al. 2023

Preprint

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We report the successful operation of a functional pixel detector with gaseous helium cooling. Using an accurate mock-up beforehand, the cooling was validated. We use a miniature turbo compressor to propel the helium at 2 g/s under ambient pressure conditions with gas temperatures above 0 °C. Our earlier results based on computational fluid dynamics simulations and a much simpler mock-up are confirmed. With this, we paved the path to cool pixel detectors in experimental particle physics at heat densities up to 400 mW/cm 2 using helium. This enables cooling of detectors with very low mass requirements, minimising the effects of multiple Coulomb scattering effectively. The concept presented here is not limited to pixel detector applications and can be used to cool any surface with comparable heat-densities, only limited by shaping the helium gas flow.

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“…Being at the forefront of HV-CMOS R&D, Mu3e has gradually implemented the experimental requirements at each stage of the MUPIX development. In spring 2020 MUPIX10 [10] was produced. It implements all the required features, including a fully monolithic read-out and a full size active area.…”

Section: Pixel Sensormentioning

confidence: 99%

Searching for the Muon Decay to Three Electrons with the Mu3e Experiment

Perez

Vigani

2021

Universe

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Mu3e is a dedicated experiment designed to find or exclude the charged lepton flavor violating μ→ eee decay at branching fractions above 10−16. The search is pursued in two operational phases: Phase I uses an existing beamline at the Paul Scherrer Institute (PSI), targeting a single event sensitivity of 2·10−15, while the ultimate sensitivity is reached in Phase II using a high intensity muon beamline under study at PSI. As the μ→ eee decay is heavily suppressed in the Standard Model of particle physics, the observation of such a signal would be an unambiguous indication of the existence of new physics. Achieving the desired sensitivity requires a high rate of muons (108 stopped muons per second) along with a detector with large kinematic acceptance and efficiency, able to reconstruct the low momentum of the decay electrons and positrons. To achieve this goal, the Mu3e experiment is mounted with an ultra thin tracking detector based on monolithic active pixel sensors for excellent momentum and vertex resolution, combined with scintillating fibers and tiles for precise timing measurements.

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MuPix10: First Results from the Final Design

Cited by 9 publications

References 9 publications

Mu3e Integration Run 2021

Mu3e Integration Run 2021

Successful cooling of a pixel tracker using gaseous helium: studies with a mock-up and a detector prototype

Searching for the Muon Decay to Three Electrons with the Mu3e Experiment

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