International
Tables for
Crystallography
Volume G
Definition and exchange of crystallographic data
Edited by S. R. Hall and B. McMahon

International Tables for Crystallography (2006). Vol. G, ch. 3.3, pp. 126-127

Section 3.3.8.3. Multiple detectors

B. H. Tobya*

aNIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8562, USA
Correspondence e-mail: brian.toby@nist.gov

3.3.8.3. Multiple detectors

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At present, CIF does not offer the ability to construct true multi-dimen­sional data structures. However, many instruments with multiple detectors produce reasonably tractable numbers of data points. For such instruments, it is possible to include an additional data item, _pd_meas_detector_id, in the loop with the data to indicate the detector that made the observation.

In Example 3.3.8.3[link], four detectors placed 20° apart are referenced with arbitrarily chosen labels A, B, C and D. Note that the detector characteristics will typically be specified in a separate calibration loop containing terms such as _pd_calib_detector_id, _pd_calib_detector_response and _pd_calib_2theta_offset. The labels given for _pd_calib_detector_id should match those in _pd_meas_detector_id.

Example 3.3.8.3. Identifying intensities from multiple detectors.

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