A5102782641- Fusion materials and technologies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
Johns Hopkins University Applied Physics Laboratory
2019
Fermi National Accelerator Laboratory
1981-2015
Argonne National Laboratory
1981
We present the results of experiments applying a large area tiled array silicon photomultipliers (SiPM) to gamma ray spectroscopy with 50.8 mm diameter NaI(Tl) and CsI(Tl) scintillators 25.4 CeBr3. These are many times larger than an individual SiPM, largest which 36 mm2 at present. This work compares two methods summing 64 SiPMs into single output signal for use standard charge integration electronics. The straightforward passive method, simply combines all anode cathodes together, active...
We have examined high gain first dynode phototubes for use in a multicell gas Cherenkov counter at Fermilab. Price and availability dictated careful examination of the EMI9839KB. Preliminary laboratory tests followed by test beam evaluation indicated that these tubes were adequate. report here how best more than sixty selected based on their quantum efficiency, single electron resolution, noise. Using same procedures we then evaluated small samples Hamamatsu R1332, Amperex PM2262 RCA 8850...
High intensity operation of the Fermilab Main Injector has resulted in increased activation machine components. Efforts to permit at high power include creation collimation systems localize losses away from locations which require maintenance. As a first step, system remove halo incoming beam was installed Spring 2006 Facility Shutdown [1]. We report on commissioning studies and operational experience including observations Booster properties, effects loss activation, results.
In conjunction with efforts to predict residual radiation levels in the Fermilab Main Injector, measurements of were correlated time history losses. Detailed examination suggested that list radioactive isotopes used for fitting was incomplete. We will report on activation studies magnet steel and copper samples which we irradiated adjacent Injector collimation system. Our results identified several additional interest. The MARS15 using a simplified model are compared measurements. long...