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The creation of a spatially extended stable DC complex plasma crystal is abig experimental challenge and a topical area of research in the field of dustyplasmas. In this paper we describe a newly built and commissioned dusty plasmaexperimental device, DPEx-II, at the Institute for Plasma Research. The devicecan support the formation of large sized Coulomb crystals in a DC glowdischarge plasma. The plasma in this L-shaped table-top glass chamber isproduced between a circular anode and a long tray shaped cathode. It ischaracterized with the help of various electrostatic probes over a range ofdischarge conditions. The dust particles are introduced by a dust dispenser toform a strongly coupled Coulomb crystal in the cathode sheath region. Theunique asymmetric electrode configuration minimizes the heating of dustparticles and facilitates the formation of crystalline structures with amaximum achievable dimension of 40~cm X 15~cm using this device. A largercrystal has numerous advantages over smaller ones, such as higher structuralhomogeneity, fewer defects, lower statistical errors due to finite size effectsetc.. A host of diagnostics tools are provided to characterize the Coulombcrystal. Results of a few initial experiments aimed at demonstrating thetechnical capabilities of the device and its potential for future dusty plasmaresearch, are reported.

DPEx-II: A New Dusty Plasma Device Capable of Producing Large Sized DC Coulomb Crystals