We study a cross-shaped cavity filled with superfluid $^4$He as prototype resonant-mass gravitational wave detector. Using membrane and re-entrant microwave sensitive optomechanical transducer, we were able to observe the thermally excited high-$Q$ acoustic modes of helium at 20 mK temperature achieved strain sensitivity $8 \times 10^{-19}$ Hz$^{-1/2}$ waves. To facilitate broadband detection c...

Background: Radiosurgery is a focal brain irradiation technique that delivers, usually in a single session, high dose of ionizing radiation. The presence of lateral electronic disequilibrium and steep dose gradients in small fields demands special attention to the selection of a suitable detector with respect to its size, composition and response. Materials and Methods : Small circular fields w...

Abstract The Summertime Line Intensity Mapper (SLIM) is a mm-wave line-intensity mapping (mm-LIM) experiment for the South Pole Telescope (SPT). goal of SPT-SLIM to serve as technical and scientific pathfinder demonstration suitability in-field performance multi-pixel superconducting filterbank spectrometers future mm-LIM experiments. Scheduled deploy in 2023-24 austral summer, focal plane will...

We present experimental demonstration of a multi-functional metamaterial absorber, which operates as an efficient detector millimeter wave radiation at room temperature. Intimate integration pyroelectric crystal directly within the unit cell enables large area sensing element made up repeating cells that are nearly ten times smaller than operational wavelength. An un-amplified intrinsic respons...

We estimate the short-range wake elds in the W-band active matrix linac of a 5-TeV collider, and demonstrate that for the assumed 60-pC bunch c harge and 10-m rms bunch length they are acceptable. Abstract. We estimate the short-range wake elds in the W-band active matrix linac of a 5-TeV collider, and demonstrate that for the assumed 60-pC bunch c harge and 10-m rms bunch length they are accep...