We are investigating the feasibility of a new detector concept for use in the beam line at the Facility for Rare Isotope Beams (FRIB). The detector is designed to withstand the high ion beam intensities and the high radiation environment while providing position, timing, and energy information. Based on the concept of a fiber detector, the device uses YAG:Ce crystals as sensing material, chosen for their extreme radiation tolerance to electromagnetic or hadronic exposure. The crystals are machined into long and thin rods which are laid out in orthogonal horizontal and vertical arrangements to obtain spatial sensitivity to impinging particles. The readout is performed at the extremities of the rods with strip Multi Pixel Photon Counters (MPPC) also referred to as Silicon Photomultipliers (SiPM) arrays model S13552 from Hamamatsu mounted on ribbon cables with connector ends.

The scintillation, luminescence and optical properties of the multicomponent Gd3Sc2Ga(2+x)Al(1-x)O12:Ce (x = 0, 0.25, 0.5, 0.75, 1), Gd2.957Sc1.905Ga(2.138+x)Al(1-x)O12:Ce (x = 0, 1) and the (200, 1000, 5000 ppm) Mg2+ co-doped Gd3Sc2Ga2.75Al0.25O12:Ce single crystals grown by the μ-PD method were characterized. Scintillation decay kinetics and light yield were correlated with the sum of the content of Ga and Sc in the host. While the Ga-admixed GSAG:Ce composition exhibited higher scintillation efficiency compared to pure GSAG:Ce, it also showed very high afterglow, due to an intense delayed electron-hole recombination at Ce3+ centres. This was supported by the calculated activation energy obtained from the temperature dependence of photoluminescence decay times. Codoping with Mg2+ significantly improved afterglow compared to pure GSAG:Ce, however, at the expense of light yield.

Description and implementation case study of low etendue, ultra-bright, and noncoherent laser-based light source (1150 lm, 8000 cd) built on a 5W blue LD and single crystal phosphor for high-efficiency technical applications.

A compact Q-switched laser with a separate Nd:YAP gain part and V:YAG saturable absorber was designed and constructed. The use of a Nd:YAP gain crystal may have certain advantages, such as polarization and wavelength stability, over the more common Nd:YAG active medium. Constructed Nd:YAP/V:YAG compact laser provides linearly polarized radiation at a wavelength of 1342 nm. Stable pulses 12 ns long with energy up to almost 0.2 mJ were generated. This laser system could serve as an eye-safe radiation source of long-range high-resolution LIDAR for autonomous vehicle control.

Hyperspectral imaging (HSI) has become a valuable tool in sample characterization in various scientific fields. While many approaches have been tested, specific applications and technology usually lead to only a narrow part of the spectrum being studied. We demonstrate the use of a broadband HSI setup based on compressed sensing capable of capturing data in visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) spectral regions. Using a tested design, we developed a dual configuration and tested its performance on a set of samples demonstrating spatial resolution and spectral reconstruction. Samples showing a potential use of the setup in optical defect detection are also tested. The setup showcases a dual single-pixel camera configuration capable of combining various detectors with a shared spatial modulation, further improving data efficiency and providing an affordable instrument from broadband spectral studies.