Operation of a Liquid Argon Time Projection Chamber
For the first time, the operation of a three-dimensional liquid argon time projection chamber has been demonstrated. This was accomplished in a 50 liter test detector using a readout plane with a woven structure etched on a PC-board.
Long Distance Drifting of Ionization Electrons in Liquid Argon
As part of our continuing program to develop a liquid argon Time Projection Chamber (TPC), we have drifted ionization electrons produced by a 113Sn internal conversion electron source over a physical distance of 20 cm in fields of 0.8 to 1.6 kV/cm. This liquid purity was maintained over a period of many days. The liquid argon purity has been improved in the liquid state by the use of molecular sieves.
Investigations of dielectric gratings using electrodynamic models based on volume integral equations
Eigenmodes of planar and cylindrical dielectric gratings (DGs) and electromagnetic wave scattering from multiplayer DGs are investigated. The DG characteristics are calculated using numerical-analytical solution of integral equations (IEs).