A novel design for a compact gamma-ray spectrometer is presented. The proposed system allows for spectroscopy of high-flux multi-MeV gamma-ray beams with MeV energy resolution in a compact design. In its basic configuration, the spectrometer exploits conversion of gamma-rays into electrons via Compton scattering in a low-Z material. The scattered electron population is then spectrally resolved ...

Gamma-ray Localization Aided with Machine-learning (GLAM) utilizes an array of four rectangular NaI(Tl) detectors, and data processed a k-nearest neighbor machine learning model, to predict the location gamma-ray sources in stationary scenarios. This work demonstrates GLAM capabilities real source locations when trained purely on simulated data. To account for efficiency differences not capture...

The dynamic range and the number of gray levels, gamma s, required for digital mammography has been evaluated using an energy transport model. The effects of molybdenum (Mo) and tungsten (W) target spectra and the energy-dependent attenuation by elemental filters, breast tissue, and a phosphor screen were included in the model. For detectors with ideal optical coupling and no inherent detector ...

This paper demonstrates the enhanced capability of single polarity charge sensing, the 3-dimensional position sensing technique, developed at the University of Michigan and previously successfully demonstrated on CdZnTe detectors, to improve the spectroscopic performance of HgI2 and to extend its range for spectrometry to an unprecedented thickness of 10 mm. Energy resolutions of close to 1% FW...

The production of axionlike particles (ALPs) with small masses in ultraperipheral $Pb - p$ and Pb$ collisions at the LHC is investigated. cross section kinematical distributions associated to diphoton final state produced $\gamma \gamma \rightarrow a \gamma$ subprocesses are estimated considering realistic set cuts. A detailed analysis backgrounds performed expected sensitivity ALP derived. Our...

The gamma-ray astronomical observatory INTEGRAL, succesfully launched on 17 th October 2002, carries two large gamma-ray telescopes. One of them is the coded-mask imaging gamma-ray telescope onboard the INTEGRAL satellite (IBIS) which provides high-resolution (≈ 12 ′) sky images of 29 • × 29 • in the energy range from 15 keV to 10 MeV with typical on-axis sensitivity of ≈ 1 mCrab at 100 keV (3σ...

The National Superconducting Cyclotron Laboratory (NSCL) is a national nuclear physics research laboratory on the campus of Michigan State University. In a typical experiment, heavy ions with masses ranging from hydrogen to uranium are created in an Electron Cyclotron Resonance (ECR) ion source and injected into the K500 cyclotron. The accelerated beam is transported to the K1200 cyclotron, whe...

The subject of ttis chapter is the function and operation of the components of a gamma-ray spectroscopy system. In Chapter 3 it was shown that the output pulse amplitude from most gamma-ray detectors is proportional to the energy deposited by the gamma ray. The pulse-height spectrum from such a detector contains a series of full-energy peaks superimposed on a continuous Compton background. Alth...

K-shell fluorescence yields of low, medium Z and rare earth elements were determined using Si(PIN) detector and HPGe detector employing reflection geometry set up. Target atoms were excited using 59.5 keV gamma rays emerging from Am-241 source of strength 300 mCi. Background radiation and multiple scattering effects were minimized by properly shielding the detector. The elemental foils of unifo...