Compton scattering is one of the dominant interaction processes in germanium for photons with an energy of around two MeV. If a photon scatters only once inside a germanium detector, the resulting event contains only one electron which normally deposits its energy within a mm range. Such events are similar to Ge neutrinoless double beta-decay (0νββ) events with just two electrons in the final s...

Single-photon avalanche diode (SPAD) detector arrays generally suffer from having a low fill-factor, in which the photo-sensitive area of each pixel is small compared to the overall area of the pixel. This paper describes the integration of different configurations of high efficiency diffractive optical microlens arrays onto a 32 × 32 SPAD array, fabricated using a 0.35 µm CMOS technology proce...

The upcoming Cosmic Microwave Background (CMB) experiments BICEP2/Keck and SPIDER will be using planar arrays of polarization sensitive antenna-coupled TES bolometers, operating at frequencies between 96GEIZ and 220 GEIz. At 145 GlTz each array consists of 64 polarimeters (128 TES sensors) and four of these arrays are assembled together to make a focal plane. The detector arrays are integrated ...

Mid-infrared detectors that are sensitive only in a tunable narrow spectral band are presented. They are based on the Resonant Cavity Enhanced Detector (RCED) principle and employing a thin active region using IV-VI narrow gap semiconductor layers. A Fabry-Pérot cavity is formed by two mirrors. The active layer is grown onto one mirror, while the second mirror can be displaced. This changes the...

Two micro crystal element (MiCE) detector unit designs are evaluated. The detector units are built using highly packed arrays of 0.8 0.8 6 mm mixed lutetium silicate (MLS) crystals. The first detector unit, MiCE1, consists of a 5 5 array of 0.8 mm 0.8 mm 6 mm MLS crystals. The detector unit is coupled to four channels of a Hamamatsu multichannel photomultiplier tube (PMT) via a 2 2 array of 2 m...

MAX is a proposed Laue lens gamma-ray telescope taking advantage of Bragg diffraction in crystals to concentrate incident photons onto a distant detector. The Laue lens and the detector are carried by two separate satellites flying in formation. Significant effort is being devoted to studying different types of crystals that may be suitable for focusing gamma rays in two 100 keV wide energy ban...

A three-dimensional multi-stage optical interconnection network is proposed for mussively purullel processors. The interconnection network employs beamsteering vertical cavity surface-emitting lasers FCSEL) as space-division switching elements, and micromachined micro-Fresnel lenses as free-space optical elements. The entire switching network is integrated on a Si chip using the free-space micr...

An optimum algorithm to find interaction positions of a γ-ray in a Ge-detector is being investigated by analyzing pulse shapes of the Ge-detector VEGA [1, 2]. The VEGA detector consists of four Ge crystals forming like a four leaf clover. Each crystal has four electric segmentations in radial quarters. A collection time of electron and hole (eh) depends on their drift length, therefore the slop...

ALDO2 is a multi-function, adjustable, low dropout linear regulator designed in onsemi I3T80 0.35~$\mu$m HV CMOS technology for use HEP detectors that adopt silicon photomultipliers (SiPMs). The chip features four independent regulators, two voltage channels (max 3.3 V) used to filter and stabilize the power supply of front-end chips, 70 V), specifically provide bias arrays SiPMs. Each can be i...

Kinetic Inductance Detectors (KIDs) with frequency domain read-out are intrinsically very suitable to use as building blocks for very large arrays. KIDs therefore are an attractive detector option for the SAFARI instrument on SPICA, Millimetron and also for large scale ground based imaging arrays. To study the properties of large KID arrays we have fabricated 400 pixels array made from 40 nm th...