Application of the DRS chip for fast waveform digitizing

Ritt, S.; Dinapoli, R.; Hartmann, U.

doi:10.1016/j.nima.2010.03.045

Cited by 255 publications

(177 citation statements)

References 4 publications

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“…The spectrometer measures the positron momentum vector and timing, while the LXe detector is used to reconstruct the γ−ray energy as well as the position and time of its first interaction in LXe. All the signals are individually digitized by in-house designed waveform digitizers based on the multi-GHz domino ring sampler chip (DRS) [11]. The PSI πE5 beam line is used to stop 3 × 10 7 positive muons per second in the target.…”

mentioning

confidence: 99%

New Limit on the Lepton-Flavor-Violating Decayμ+→e+γ

Adam¹,

Bai²,

Baldini³

et al. 2011

Phys. Rev. Lett.

219

108

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mentioning

confidence: 99%

New Limit on the Lepton-Flavor-Violating Decayμ+→e+γ

Adam¹,

Bai²,

Baldini³

et al. 2011

Phys. Rev. Lett.

219

108

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“…Based on FPGA technology the trigger system is designed to reduce the trigger rate from several MHz to ∼ 10 Hz by using fast estimates of photon energy and positron-photon relative timing and direction, with a resulting signal efficiency and live time fraction > 95 % and ≈ 99 % respectively [9]. The readout is performed by a custom-made chip (Domino Ring Sample, DRS), developed at PSI, with a maximum sampling speed of 5 GHz and 12 bit voltage digitization [10].…”

Section: The Meg Experimentsmentioning

confidence: 99%

Status and perspectives of the MEG experiment

Cei

2016

EPJ Web of Conferences

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Abstract. We present the status and the perspectives of the MEG experiment which has been searching for the Lepton Flavour Violating decay μ + → e + γ for several years. In a dataset corresponding to 3.6 × 10 14 positive muons stopped on target we didn't find any evidence for this decay and established an upper bound on the μ + → e + γ branching ratio of 5.7 × 10 −13 at 90 % C.L., with a sensitivity of 7.7 × 10 −13 , which improves our world best limit by a factor of 4 and the best previous limit by a factor of 20. Our final dataset is about twice as large than the analyzed sample and the expected final sensitivity of the experiment is ∼ 5 × 10 −13 . We also discuss the status of the upgrade of the experiment (MEGII) which aims to improve the sensitivity by a further order of magnitude.

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“…Signals from the detectors are digitized by a waveform digitizer chip, the Domino Ring Sampler 4 (DRS4) [8]. This is necessary to exploit the detectors timing resolutions and to reduce the pile up of events.…”

Section: The Meg Detectormentioning

confidence: 99%

Search for charged lepton flavour violation with the MEG and MEG II experiments

Venturini

2016

EPJ Web Conf.

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Abstract.In the next decade Charged Lepton Flavour Violation (CLFV) experiments will play a key role in the search for new physics. Given that flavour oscillations occur among neutrinos, unmeasurably small amplitudes are expected for CLFV processes, while in many new physics scenarios such processes are strongly enhanced. A new generation of experiments looking for CLFV muon decays will be performed at the Paul Scherrer Institut (MEG II, Mu3e), at Fermilab (Mu2e) and at J-Parc (DeeMee, COMET), with sensitivities improved by one or two order of magnitudes with respect to current limits. The MEG experiment has performed the most recent improvement in the search for the CLFV decay μ + → e + γ. With the analysis of half of the collected statistics, a new upper limit on the branching ratio has been set BR(μ → eγ) < 5.7 × 10 −13 at 90% CL, and the final result is soon to be released. A substantial improvement of MEG results requires an improvement of detector performances, in order to reject the background contributions which limit the signal sensitivity. This will be carried out by a short-term upgrade of the apparatus, MEG II. The major modifications of the experimental apparatus consist in the replacement of the current positron tracking system with a new high transparency and high granularity spectrometer and the substitution and rearrangement of some of the photosensors in the liquid-xenon photon detector. MEG II will start taking data in 2016, with a sensitivity on the μ + → e + γ decay of about 5 × 10 −14 . Therefore as MEG performed the last improvement in the search for CLFV, MEG II will start a new era probing unexplored regions of new physics scenarios.

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Application of the DRS chip for fast waveform digitizing

Cited by 255 publications

References 4 publications

New Limit on the Lepton-Flavor-Violating Decayμ+→e+γ

New Limit on the Lepton-Flavor-Violating Decayμ+→e+γ

Status and perspectives of the MEG experiment

Search for charged lepton flavour violation with the MEG and MEG II experiments

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