Craig Lage

http://lage.physics.ucdavis.edu/

Astrophysics Papers and Presentations:

(27) Argyriou, I et.al., "The Brighter-Fatter Effect in the JWST MIRI Si:As IBC detectors I. Observations, impact on science, and modelling", Submitted to Astronomy and Astrophysics, Available on the arXiv at http://arxiv.org/abs/2303.13517.

(26) Guo, Z etal., "Fringing Analysis and Simulation for the Vera C. Rubin Observatory's Legacy Survey of Space and Time.", "Pub. Astro. Soc. Paci c", 135(1045):034503, March 2023, Available on the arXiv at http://arxiv.org/abs/2211.09149.

(25) Stalder, B et.al., "Rubin Observatory Commissioning Camera: summit integration.", Ground-based and Airborne Instrumentation for Astronomy IX, volume 12184 of Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, page 121840J, August 2022.

(24) Miller, E.D, et.al., "Understanding the effects of charge diffusion in next-generation soft x-ray imagers", Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, volume 12181 of Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, page 121816R, August 2022, Available on the arXiv at http://arxiv.org/abs/2208.07348.

(23) Snyder, A, et.al., "Characterization and correction of serial deferred charge in LSST camera ITL CCDs.", Journal of Astronomical Telescopes, Instruments, and Systems, 7:048002, October 2021.

(22) Lage, C., Bradshaw, A.K., Tyson, J.A., "Poisson CCD: A dedicated simulator for modeling CCDs", Journal of Applied Physics, V130, N16, 2021, Available on the arXiv at http://arxiv.org/abs/1911.09038v1.

(21) Lage, C., "Linearity and correction of the BF effect in LSST sensors", Available on the arXiv at http://arxiv.org/abs/1911.09567v1.

(20) Lage, C., "Physical and electrical analysis of LSST sensors", Available on the arXiv at http://arxiv.org/abs/1911.09577v1.

(19) Bradshaw, A.K., Lage, C., Tyson, J.A., "Characterization of LSST CCDs Using Realistic Images, Before First Light", Available on the arXiv at http://arxiv.org/abs/1808.00534v1

(18) Lage, C., Bradshaw, A., Tyson, J.A., "Measurements and Simulations of the Brighter-Fatter Effect in CCD Sensors", JInst, V12, PC03091, 2017. Available on the arXiv at http://arxiv.org/abs/1703.05823

(17) Villasenor, J., et.al., "Reach-through Effect in Deep Depletion TESS CCDs", JInst, V12, P04025, 2017.

(16) Rasmussen, A., et.al., "High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response", Proceesdings of the SPIE, Vol 9915, 2016. Available on the arXiv at http://arxiv.org/abs/1608.019642v2.

(15) Lage, C. "Physics Models and Simulation of Sensors", presented at UC Davis Last Kiloparsec Workshop, Dec 15, 2015.

(14) Lage, C. "Pixel Areas and Correlations", presented at LSST Sensor Anomalies Working Group meeting Dec 3, 2015.

(13) Lage C. "Measurements and Simulations of the Brighter-Fatter Effect", presented at DESC working group meeting at Argonne on Oct 28, 2015.

(12) Lage, C. "Simulations of the Brighter-Fatter Effect", presented at LSST Sensor Anomalies Working Group meeting Sep 10, 2015.

(11) Lage, C. "Poisson Equation Solutions for Thick Fully Depleted CCDs", presented at LSST Sensor Anomalies Working Group meeting Jul 2, 2015.

(10) Lage, C. "Midline Astrometric Shifts as a Function of CCD Integrating Phase", presented at LSST Sensor Anomalies Working Group meeting Jun 4, 2015.

(9) Shimwell et.al. "Another shock for the Bullet cluster, and the source of seed electrons for radio relics". MNRAS, V449, pp1486-1494, 2015. Available on the arXiv at http://arxiv.org/abs/1502.01064.

(8) Bradshaw et.al., "Mapping charge transport effects in thick CCDs with a dithered array of 40,000 stars", JINST, V10, Apr, 2015.

(7) Lage C. "Constrained Simulation of the Bullet Cluster". Presented at UC Davis Cosmology Seminar Jan 22, 2015.

(6) Lage C. and Farrar G.R. "The Bullet Cluster is not a Cosmological Anomaly". JCAP, V2, P38, 2015. Available on the arXiv at http://arxiv.org/abs/1406.6703.

(5) Shimwell et.al. "Deep radio observations of the radio halo of the bullet cluster 1E 0657-55.8". MNRAS, V440, P2901, 2014. Available on the arXiv at http://arxiv.org/abs/1403.2393v1.

(4) Lage C. "Constrained Simulation of the Bullet Cluster". New York University PhD dissertation, Sept, 2014.

(3) Lage, C. and Farrar, G. "Constrained Simulation of the Bullet Cluster". Astrophysical Journal, V787, P144, 2014. Available on the arXiv at http://arxiv.org/abs/1312.0959v1.

(2) Lage, C. and Farrar, G. "Multi-Wavelength Simulation of the Bullet Cluster", presented at the meeting of the American Astronomical Society, Austin, Tx, 2012.

(1) C.S. Lage and W. Whaling, "Transition Probabilities in Pr(II) and the Solar Praseodymium Abundance", Journal of Quantitative Spectroscopy and Radiative Transfer, Vol 16, pp 537-542, 1976.

Released Code

I have developed a simple grid-based Poisson's equation solver intended to simulate pixel distortion effects in the thick fully-depleted CCD's to be used in the LSST digital camera. This code allows one to set up various configurations of pixel regions and surrounding regions of fixed potential and simulate the pixel boundaries and electron paths in the CCD. The code is available at this link

Multimedia files

Below are a set of movies of the bullet cluster collision. Each movie consists of three panels. The top panel shows the mass distribution, with the log of the baryon mass being shown in color, and the log of the dark matter mas being shown in white contour lines. The separation of the dark matter from the baryons can be clearly seen. The center panel shows the log of the baryon temperature, and the bottom panel shows the log of the magnetic field.

This file, shows a movie of the bullet cluster simulation. This represents the best-case initial conditions.

This file, shows a movie of the bullet cluster simulation, carried several Gigayears (Gy) into the future. It shows the future evolution and coalescence of the two clusters.

This file, shows electrons propagating in a 100 micron thick CCD from their point of creation down to where they are collected in the collecting wells. This has physically realistic values of drift and diffusion.