31 lines
1.6 KiB
TeX
31 lines
1.6 KiB
TeX
\documentclass{article}
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\begin{document}
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The AlCap is an experiment which precisely measures products of
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nuclear muon capture on aluminum. It is a joint project between COMET and Mu2e
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collaborations since both experiments intend to search for lepton flavor
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violating conversion $\mu^-+A\rightarrow e^-+A$ where the capture products
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would cause significant issues on detector hit rates, radiation damage, and
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backgrounds.
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The first run of AlCap has been carried out at PSI in December 2013 for
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protons measurement. Initial analysis showed that emission rate of protons from
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4 to 8 MeV is $(1.7 \pm 0.1)$ per nuclear muon capture. The proton spectrum
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peaks at 3.7 MeV and decreases exponentially with a decay constant of 2.6 MeV.
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Two more runs are scheduled in June (for neutrons and photons), and October
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(for protons) 2015.
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%The AlCap experiment is a joint project between the COMET and Mu2e
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%collaborations. Both experiments intend to look for the lepton-flavour
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%violating conversion $\mu^-+A\rightarrow e^-+A$, using tertiary muons from high-power pulsed
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%proton beams. In these experiments the products of ordinary muon capture in the
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%muon stopping target are an important concern, both in terms of hit rates in
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%tracking detectors and radiation damage to equipment. The goal of the AlCap
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%experiment is to provide precision measurements of the products of nuclear
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%capture on Aluminium, which is the favoured target material for both COMET and
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%Mu2e. The results will be used for optimising the design of both conversion
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%experiments, and as input to their simulations. Data was taken in December 2013
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%and is currently being analysed.
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\end{document}
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