Calibration of spiral-readout image-plate detectors

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

An improved method for intensity-uniformity calibration of diffraction data collected on spiral-readout image-plate (IP) systems is described. This technique is applicable to all types of spiral-readout IP detectors. The procedure utilizes an attenuated direct-beam scan of the IP to generate a radial-sensitivity calibration table. Exposure and scanning of the calibration frame are done on the same time scale as typical data collections, and require no additional equipment. Specific examples are presented for use with Mac Science DIP2000 systems. The new radial calibration is shown to reduce significantly structure-based R factors. The improved radial calibration is also shown to lower Rmerge when the IP is offset from the beam center. In addition to improving data quality and statistics, this method provides a quick and simple diagnostic tool to monitor changes in the sensitivity of the IP detector as a function of age.

Original languageEnglish (US)
Pages (from-to)65-70
Number of pages6
JournalJournal of Applied Crystallography
Volume32
Issue number1
StatePublished - 1999

Fingerprint

Calibration
readout
Detectors
detectors
R388
Systems science
R Factors
sensitivity
Diffraction
Statistics
statistics
Scanning
Equipment and Supplies
scanning
diffraction

ASJC Scopus subject areas

  • Structural Biology
  • Condensed Matter Physics

Cite this

Calibration of spiral-readout image-plate detectors. / White, Mark; Watowich, Stanley; Fox, Robert O.

In: Journal of Applied Crystallography, Vol. 32, No. 1, 1999, p. 65-70.

Research output: Contribution to journalArticle

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