Data acquisition system for the MuLan muon lifetime experiment

Tishchenko, V. G.; Battu, S.; Kumar, Cheekatmalla, Santosh; Chitwood, D. B.; Dhamija, S.; Gorringe, T. P.; Gray, F.; Lynch, Kevin R.; Logashenko, I.B.; Rath, Shubhalaxmi; Webber, D.M.

doi:10.1016/j.nima.2008.03.121

Cited by 3 publications

(1 citation statement)

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“…The data acquisition [31] provided the read out and data logging of the waveform digitizers and the beam monitor as well as run control, data monitoring, etc. The acquisition was developed using the midas acquisition package [32] and the root analysis package [33] on a parallel, layered array of networked Intel Xeon 2.6 GHz processors running Fedora Core 3.…”

Section: G Data Acquisitionmentioning

confidence: 99%

Detailed report of the MuLan measurement of the positive muon lifetime and determination of the Fermi constant

et al. 2013

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We present a detailed report of the method, setup, analysis and results of a precision measurement of the positive muon lifetime. The experiment was conducted at the Paul Scherrer Institute using a time-structured, nearly 100%-polarized, surface muon beam and a segmented, fast-timing, plastic scintillator array. The measurement employed two target arrangements; a magnetized ferromagnetic target with a ∼4 kG internal magnetic field and a crystal quartz target in a 130 G external magnetic field. Approximately 1.6 × 10 12 positrons were accumulated and together the data yield a muon lifetime of τµ(MuLan) = 2 196 980.3(2.2) ps (1.0 ppm), thirty times more precise than previous generations of lifetime experiments. The lifetime measurement yields the most accurate value of the Fermi constant GF (MuLan) = 1.166 378 7(6) × 10 −5 GeV −2 (0.5 ppm). It also enables new precision studies of weak interactions via lifetime measurements of muonic atoms.

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Section: G Data Acquisitionmentioning

confidence: 99%