High Precision Characterization of the Kilojoule Multi-ps Advanced Radiographic Capability

2020 ◽  
Author(s):  
David A. Alessi ◽  
Matthew A. Prantil ◽  
Sandrine I. Herriot ◽  
Mark R. Hermann ◽  
John E. Heebner ◽  
...  
Keyword(s):  
High Precision

High-Precision Characterization of Super-Multiperiod AlGaAs/GaAs Superlattices Using X-Ray Reflectometry on a Synchrotron Source

2021 ◽  
Author(s):  
L. I. Goray ◽  
E. V. Pirogov ◽  
M. V. Svechnikov ◽  
M. S. Sobolev ◽  
N. K. Polyakov ◽  
...  
Keyword(s):  
High Precision ◽  
Synchrotron Source ◽  
X Ray

scholarly journals Densified Pupil Spectrograph as High-precision Radial Velocimetry: From Direct Measurement of the Universe’s Expansion History to Characterization of Nearby Habitable Planet Candidates

2022 ◽  
Vol 163 (2) ◽  
pp. 63
Author(s):  
Taro Matsuo ◽  
Thomas P. Greene ◽  
Mahdi Qezlou ◽  
Simeon Bird ◽  
Kiyotomo Ichiki ◽  
...  
Keyword(s):  
Radial Velocity ◽  
Direct Measurement ◽  
High Precision ◽  
Resolving Power ◽  
Line Of Sight ◽  
High Dispersion ◽  
Velocity Measurements ◽  
Habitable Planet ◽  
Airy Disk

Abstract The direct measurement of the universe’s expansion history and the search for terrestrial planets in habitable zones around solar-type stars require extremely high-precision radial-velocity measures over a decade. This study proposes an approach for enabling high-precision radial-velocity measurements from space. The concept presents a combination of a high-dispersion densified pupil spectrograph and a novel line-of-sight monitor for telescopes. The precision of the radial-velocity measurements is determined by combining the spectrophotometric accuracy and the quality of the absorption lines in the recorded spectrum. Therefore, a highly dispersive densified pupil spectrograph proposed to perform stable spectroscopy can be utilized for high-precision radial-velocity measures. A concept involving the telescope’s line-of-sight monitor is developed to minimize the change of the telescope’s line of sight over a decade. This monitor allows the precise measurement of long-term telescope drift without any significant impact on the Airy disk when the densified pupil spectra are recorded. We analytically derive the uncertainty of the radial-velocity measurements, which is caused by the residual offset of the lines of sight at two epochs. We find that the error could be reduced down to approximately 1 cm s−1, and the precision will be limited by another factor (e.g., wavelength calibration uncertainty). A combination of the high-precision spectrophotometry and the high spectral resolving power could open a new path toward the characterization of nearby non-transiting habitable planet candidates orbiting late-type stars. We present two simple and compact highly dispersed densified pupil spectrograph designs for cosmology and exoplanet sciences.

Production Proven, High Precision Temporary Bond/De-bond Process

2013 ◽  
Vol 2013 (1) ◽  
pp. 000861-000865 ◽  
Author(s):  
Blake Dronen ◽  
Aric Shorey ◽  
B.K. Wang ◽  
Leon Tsai
Keyword(s):  
High Precision ◽  
Support System ◽  
Thickness Variation ◽  
Total Thickness ◽  
Critical Step ◽  
Low Coherence ◽  
Total Thickness Variation ◽  
Thinning Operations ◽  
Wafer Thinning

Wafer thinning represents a critical step in 2.5D and 3D-IC integration. Achieving low total thickness variation (TTV) of a bonded stack is essential since it directly impacts the TTV of the thinned device wafer. It is essential to understand and utilize appropriate processes and materials that provide precision bonded stacks prior to thinning operations in order to achieve high process yields. The 3M™ Wafer Support System and Corning's precision glass carrier wafers were used to produce bonded stacks. Leveraging metrology tools like the Flatmaster MSP-300 and low coherence interferometric probes allow for characterization of the TTV of each layer of a bonded stack and better understanding of the stack-up as well as how to minimize stack TTV. The ability to deliver stack TTV of < 2 um in a repeatable manner has been demonstrated.

scholarly journals High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with the Nearby Earth Astrometric Telescope (NEAT)

2011 ◽  
Vol 34 (2) ◽  
pp. 385-413 ◽  
Author(s):  
Fabien Malbet ◽  
Alain Léger ◽  
Michael Shao ◽  
Renaud Goullioud ◽  
Pierre-Olivier Lagage ◽  
...  
Keyword(s):  
High Precision ◽  
Planetary Systems ◽  
Precision Astrometry
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