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<p class="title">DRAFT DICTIONARY</p>
<p class="title"><font class="smalltitle"></font>CBF/imgCIF Extensions Dictionary</p>
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<p class="title">Draft version 1.5 for comment</p>
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<h5>Image dictionary (imgCIF) version 1.5.4</h5>
<h1>Category DIFFRN_DETECTOR_ELEMENT</h1>
<b>Name:</b><br />
<tt class="cifdefinition">'diffrn_detector_element'</tt>
<p><b>Description:</b></p><pre class="cifdefinition">
Data items in the <a href="Cdiffrn_detector_element.html" class="catlink">DIFFRN_DETECTOR_ELEMENT</a> 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 <a href="Carray_structure_list.html" class="catlink">ARRAY_STRUCTURE_LIST</a> and <a href="Carray_structure_list_axis.html" class="catlink">ARRAY_STRUCTURE_LIST_AXIS</a>
is preferable to simply providing the centre of the
detector element.
</pre>
<b>Example:</b><br /><br />
<table class="cifcatexample" width="100%"><tr><td><i>
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.
</i><br /><pre class="cifexample">
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
</pre><br /></td></tr></table><br />
<b>Category groups:</b><br />
<tt> inclusive_group</tt><br />
<tt> array_data_group</tt><br />
<b>Category keys:</b><br />
<tt> _diffrn_detector_element.id</tt><br />
<tt> _diffrn_detector_element.detector_id</tt><br />
<p class="pack"><b>Mandatory category:</b> no</p>
<h4 align=left>
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:
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