In 2018, a test run with muons in the North Area at CERN was performed, running parasitically downstream of COMPASS spectrometer. The aim to investigate elastic interactions on atomic electrons, an experimental configuration similar one proposed by project MUonE, which plans perform very precise measurement differential cross-section interactions. taking data 190 GeV pion beam, stopped tungsten...

The article by Kadrmas and Christian (1), which appears in this issue of The Journal of Nuclear Medicine, is a well-written account of a comprehensive study that compares lesion detectability of 6 different commercial PET imaging systems, including 2 state-ofthe-art high-resolution dedicated bismuth germanate (BGO) systems, an older dedicated BGO system, a dedicated NaI(Tl) system, and 3 NaI(Tl...

The XL-Calibur balloon-borne hard X-ray polarimetry mission comprises a Compton-scattering polarimeter placed at the focal point of an mirror. is housed within BGO anticoincidence shield, which needed to mitigate considerable background radiation present observation altitude ~40 km. This paper details design, construction and testing as well performance measured during week-long maiden flight f...

Underground Nuclear Astrophysics Experiment in China (JUNA) has been commissioned by taking the advantage of ultra-low background Jinping underground lab. High current mA level 400 KV accelerator with an ECR source and BGO detectors were commissioned. JUNA studies directly a number nuclear reactions important to hydrostatic stellar evolution at their relevant energies. In first quarter 2021, pe...

The BGO anticoincidence shield of the SPI detectors has a maximum effective area of over 5000 cm, and operates in the energy range >75 keV. It was incorporated into the 6spacecraft interplanetary network shortly after launch. It detects about one confirmed burst every three days, and has detected over 125 cosmic and soft gamma repeater bursts since it started operation. It also detects numerous...

A phoswich detector with two scintillation layers has been designed and assembled at Oregon State University. This detector is able to identify and reject Compton events and ultimately reduce the Compton continuum in gamma energy spectra. In this detector, CsI(Tl) crystal is used to primarily detect photoelectric events. The CsI(Tl) crystal is partially surrounded by a BGO crystal layer to capt...

In stars with temperatures above 20·10 K, hydrogen burning is dominated by the CNO cycle. Its rate is determined by the slowest process, the N(p,γ)O reaction. Deep underground in Italy’s Gran Sasso laboratory, at the LUNA 400 kV accelerator, the cross section of this reaction has been measured at energies much lower than ever achieved before. Using a windowless gas target and a 4π BGO summing d...

A new calibration technique based on radiative capture of protons from an RFQ accelerator in a lithium target, which makes use of the resultant high intensity flux of 17 .6 MeV photons, has been developed and tested . The technique is capable of calibrating the thousands of BGO crystals in the L3 electromagnetic calorimeter at once, with an absolute accuracy of better than 1 % in 1-2 h. Systema...