Performance of the EBIT calorimeter spectrometer

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2957925· OSTI ID:21266472

Porter, Frederick Scott; Gygax, John; Kelley, Richard L; Kilbourne, Caroline A; King, Jonathan M ^[1]; Beiersdorfer, Peter; Brown, Gregory V; Thorn, Daniel B ^[2]; Kahn, Steven M ^[3]

---

1. Code 662, NASA/GSFC, Greenbelt, Maryland 20771 (United States)
2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
3. Department of Physics, Stanford University, Stanford, California 94305 (United States)

The EBIT calorimeter spectrometer (ECS) is a new high-resolution, broadband x-ray spectrometer that has recently been installed at the Electron Beam Ion Trap Facility (EBIT) at the Lawrence Livermore National Laboratory. The ECS is an entirely new production class spectrometer that replaces the XRS/EBIT spectrometer that has been operating at EBIT since 2000. The ECS utilizes a 32-pixel x-ray calorimeter array from the XRS instrument on the Suzaku x-ray observatory. Eighteen of the pixels are optimized for the 0.1-10 keV band and yield 4.5 eV full width at half maximum energy resolution and 95% quantum efficiency at 6 keV. In addition, the ECS includes 14 detector pixels that are optimized for the high-energy band with a bandpass from 0.5 to over 100 keV with 34 eV resolution and 32% quantum efficiency at 60 keV. The ECS detector array is operated at 50 mK using a five stage cryogenic system that is entirely automated. The instrument takes data continuously for over 65 h with a 2.5 h recycle time. The ECS is a nondispersive, broadband, highly efficient spectrometer that is one of the prime instruments at the EBIT facility. The instrument is used for studies of absolute cross sections, charge exchange recombination, and x-ray emission from nonequilibrium plasmas, among other measurements in our laboratory astrophysics program.

• OSTI ID: 21266472
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 79; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ASTROPHYSICS
CALORIMETERS
CHARGE EXCHANGE
CROSS SECTIONS
CRYOGENICS
ELECTRON BEAMS
ENERGY RESOLUTION
EV RANGE
KEV RANGE
LAWRENCE LIVERMORE NATIONAL LABORATORY
NON-EQUILIBRIUM PLASMA
PERFORMANCE
QUANTUM EFFICIENCY
X RADIATION
X-RAY SPECTROMETERS