March 31, 2019

LLNL Researchers and UC Berkeley Collaborators Featured on CBS News Report

Joseph Bernadas

Research by Brett Kelly (former MED intern and UC Berkeley PhD student), Maxim Shusteff (MED), Chris Spadaccini (ENG) and colleagues at UC Berkeley was featured on a CBS news report on March 31, 2019. The news segment highlighted joint work on a 3D printing method that uses tomographic reconstruction for volumetric printing.

The hardware for the technology is inexpensive, boding well for its adoption as a commercial product. Another advantage is the reusability of materials, the speed of the process, and the fact that it builds a component all at once rather than in a layer-by-layer fashion.

LLNL's warm-electron-beam ion trap (WEBIT) has been delivered to the NASA/Goddard Space Flight Center, for use in calibrating the Resolve quantum microcalorimeter x-ray spectrometer. Resolve will be launched on the x-ray imaging and spectroscopy mission (XRISM) in 2022, and will measure x-ray emission from celestial sources across the 0.3 to 12 keV x-ray band, with a near constant-energy resolution of ~5 electron volts.

X-ray emission from highly charged ions produced in WEBIT, such as He-like oxygen and He-like neon, provides a significant improvement in accuracy over characteristic lines produced by standard x-ray tubes typically used for calibration purposes. WEBIT will be used as a calibration instrument for Resolve at different stages of assembly over the coming year.

LLNL is an investigator institution for the XRISM satellite, funded by NASA/GSFC to provide the WEBIT for calibration, support calibration measurements of the infrared blocking filter employed by Resolve, and provide laboratory astrophysics measurements using LLNL's EBIT-I and SuperEBIT between now and 2024. LLNL's Megan Eckart (PHYS) is the calibration lead for the XRISM/Resolve instrument and Gregory Brown and Natalie Hell (both PHYS) are members of the XRISM science working group and Resolve instrument team.