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Prototype AT-TPC: Toward a new generation active target time projection chamber for radioactive beam experiments

2012; Elsevier BV; Volume: 691; Linguagem: Inglês

10.1016/j.nima.2012.06.050

1872-9576

D. Suzuki, M. Ford, D. Bazin, W. Mittig, W. G. Lynch, T. Ahn, S. Aune, E. Galyaev, A. Fritsch, Jason A. Gilbert, F. Montes, A. Shore, J. Yurkon, J. J. Kolata, J. Browne, A. M. Howard, A. Roberts, Xiaodong Tang,

Radiation Detection and Scintillator Technologies

The Prototype AT-TPC, a detector based on time projection chamber (TPC) technology was built at the National Superconducting Cyclotron Laboratory, Michigan State University. The chamber gas, called the active target, of the Prototype AT-TPC is utilized simultaneously as a reaction target and a tracking medium of charged particles for measuring low-energy nuclear reactions. In pursuit of luminosity, efficiency and resolution for reaction studies at a new generation of radioactive isotope facilities, the Prototype AT-TPC provides one of the largest active volumes in the world measuring 25 cm in diameter and 50 cm long along the beam axis, millimeter-precision tracking capability, and a high electric field of 1 kV/cm/atm for fast electron drift, which limits the detector dead time. Commissioning of the detector using standard alpha sources and radioactive 6He beams has demonstrated the detector's long-term stability as well as its performance, which allowed good reconstruction of reaction kinematics.