Programmable Multiresolution CMOS Active Pixel Sensor

Fossum, Eric R.; Pain, Bedabrata; Matthies, Larry; Kemeny, Sabrina; Panicacci, Roger

Home/Archive/NASA NTRS

NASA NTRS · 20210003646

Programmable Multiresolution CMOS Active Pixel Sensor

Fossum, Eric R.·Pain, Bedabrata·Matthies, Larry·Kemeny, Sabrina·Panicacci, Roger

View original source ↗Export metadata ↓

Abstract

CMOS active pixel sensors (APS) allow the flexibility of placing signal processing circuitry on the imaging focal plane. The multiresolution CMOS APS can perform block averaging on-chip to eliminate the off-chip software intensive image processing. This 128 x 128 APS array can be read out at any user-defined resolution by configuring a set of digital shift registers. The resolution frame rate is 30 Hz with higher rates for all other image resolutions.

Explore related subjects

APS signal processing circuitry imaging focal plane active pixel sensors

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

Fossum, Eric R., Pain, Bedabrata, Matthies, Larry, Kemeny, Sabrina, Panicacci, Roger. 1996-01-31. Programmable Multiresolution CMOS Active Pixel Sensor. https://ntrs.nasa.gov/citations/20210003646

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

DOE OSTI2017

ION EFFECTS IN THE APS PARTICLE ACCUMULATOR RING

Trapped ions in the APS Particle Accumulator Ring (PAR) lead to a positive coherent tune shift in both planes, which increases along the PAR cycle as more ions accumulate. This effect has been studied using an ion simulation code developed at SLAC. After modifying the code to include a realistic vacuum profile, multiple ionization, and the effect of shaking the beam to measure the tune, the simulation agrees well with our measurements. This code has also been used to evaluate the possibility of ion instabilities at the high bunch charge needed for the APS-Upgrade.

APS↗

DOE OSTI2017

BEAMLINE-CONTROLLED STEERING OF SOURCE-POINT ANGLE AT THE ADVANCED PHOTON SOURCE

An EPICS-based steering software system has been implemented for beamline personnel to directly steer the angle of the synchrotron radiation sources at the Advanced Photon Source. A script running on a workstation monitors "start steering" beamline EPICS records, and effects a steering given by the value of the "angle request" EPICS record. The new system makes the steering process much faster than before, although the older steering protocols can still be used. The robustness features of the original steering remain. Feedback messages are provided to the beamlines and the accelerator operators. Underpinning this new steering protocol is the recent refinement of the global orbit feedback process whereby feedforward of dipole corrector set points and orbit set points are used to create a local steering bump in a rapid and seamless way.

APS↗

DOE OSTI2017

MULTI-OBJECTIVE ONLINE OPTIMIZATION OF BEAM LIFETIME AT APS

In this paper, online optimization of beam lifetime at the APS (Advanced Photon Source) storage ring is presented. A general genetic algorithm (GA) is developed and employed for some online optimizations in the APS storage ring. Sextupole magnets in 40 sectors of the APS storage ring are employed as variables for the online nonlinear beam dynamics optimization. The algorithm employs several optimization objectives and is designed to run with topup mode or beam current decay mode. Up to 50\% improvement of beam lifetime is demonstrated, without affecting the transverse beam sizes and other relevant parameters. In some cases, the top-up injection efficiency is also improved.

APS↗