A fully automated emulsion analysis system has been developed by the Nagoya University Group, which has brought revolutionary progress to the analysis of nuclear emulsion plates. A description of this analysis system is given and its application to emulsion-counter hybrid experiments is introduced.

Fully automated emulsion analysis system

http://cds.cern.ch/record/954903/files/0609101.pdf

Heavy-Flavour Hadro-Production from Fixed-Target to Collider Energies

The DONUT experiment used an emulsion/counter-hybrid-detector, which succeeded in detecting tau–neutrino charged-current interactions. A new method of emulsion analysis, NETSCAN, was used to locate neutrino events and detect tau decays. It is based on a fully automated emulsion readout system (Ultra Track Selector) developed at Nagoya University. The achieved plate-to-plate alignment accuracy of ∼0.2 μm over an area of 2.6 mm ×2.6 mm permitted an efficient and systematic tau decay search using emulsion data. Moreover, this accuracy allowed measurement of particle momenta by multiple Coulomb scattering, and contributed to the efficient background rejection for the ντ candidates. This paper describes details of our emulsion analysis methods.

Detection and analysis of tau–neutrino interactions in DONUT emulsion target

Nuclear capture at rest of Ξ− hyperons

Charm meson production in 800 GeV/ c proton-emulsion interactions

A hybrid apparatus consisting of a movable emulsion target and a magnetic spectrometer was used in a fixed target Fermilab Tevatron experiment to study the production of heavy quarks by high-energy hadron beams. High-resolution silicon microstrip detectors were used for precise tracking in the dense particle environment. Details of the experimental apparatus, including the data acquisition system, are described.

S. W. Nam

Papers

Hybrid emulsion spectrometer for the detection of hadronically produced heavy flavor states