DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment

#

Index

##### Image dictionary (imgCIF) version 1.5.4

# Category DIFFRN_DETECTOR_ELEMENT

Name:
`'diffrn_detector_element'`

Description:

           Data items in the DIFFRN_DETECTOR_ELEMENT category record
                  the details about spatial layout and other characteristics
                  of each element of a detector which may have multiple elements.

                  In most cases, giving more detailed information
                  in ARRAY_STRUCTURE_LIST and ARRAY_STRUCTURE_LIST_AXIS
                  is preferable to simply providing the centre of the
                  detector element.

Example:

Example 1 - Detector d1 is composed of four CCD detector elements, each 200 mm by 200 mm, arranged in a square, in the pattern 1 2 * 3 4 Note that the beam centre is slightly displaced from each of the detector elements, just beyond the lower right corner of 1, the lower left corner of 2, the upper right corner of 3 and the upper left corner of 4. For each element, the detector face coordiate system, is assumed to have the fast axis running from left to right and the slow axis running from top to bottom with the origin at the top left corner.

            loop_
            _diffrn_detector_element.detector_id
            _diffrn_detector_element.id
            _diffrn_detector_element.reference_center_fast
            _diffrn_detector_element.reference_center_slow
            _diffrn_detector_element.reference_center_units
            d1     d1_ccd_1  201.5 201.5  mm
            d1     d1_ccd_2  -1.8  201.5  mm
            d1     d1_ccd_3  201.6  -1.4  mm
            d1     d1_ccd_4  -1.7   -1.5  mm

Category groups:
`inclusive_group`
`array_data_group`
Category keys:
`_diffrn_detector_element.id`
`_diffrn_detector_element.detector_id`

Mandatory category: no

#### HTML version of draft dictionary created by modified version of makedicthtml by B. McMahon from modified version of imgCIF dcitionary 1.3.2 which is subject to the following copyright:

Copyright © 2005 International Union of Crystallography