<div dir="ltr"><div class="gmail_extra" style="font-size:12.8px">Dear NeXus folks,</div><div class="gmail_extra" style="font-size:12.8px"><br></div><div class="gmail_extra" style="font-size:12.8px">there was a little discussion last week about possible additions to the NeXus standard (and NXmx) to record beam information relevant for the estimation of dose.  Herbert proposed a good solution, but the outcome of this discussion is still pending.</div><div class="gmail_extra" style="font-size:12.8px"><br></div><div class="gmail_extra" style="font-size:12.8px">At DECTRIS, we're keen to tell our customers how to record additional metadata in a NeXus-compliant way.  That's why I'd like to have official word on the fields below:</div><div class="gmail_extra" style="font-size:12.8px"><br></div><div class="gmail_extra" style="font-size:12.8px">Information on the synchrotron should be recorded in an NX_Source group.  Is /entry/source the right place for that?</div><p style="font-size:12.8px"><span style="font-family:Symbol"><span style="font-stretch:normal;font-size:7pt;font-family:'Times New Roman'">     </span></span>/entry/source <a href="http://download.nexusformat.org/sphinx/classes/base_classes/NXsource.html" target="_blank"><i><span style="color:rgb(202,121,0);letter-spacing:-0.1pt">NX_SOURCE</span></i></a></p><p style="font-size:12.8px;margin:9.6pt 0cm 6pt 72pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-size:10.5pt;font-family:'Courier New';color:black;letter-spacing:-0.1pt">o<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">   </span></span><b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">name</span></b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">: </span><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-char" target="_blank"><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:rgb(202,121,0);letter-spacing:-0.1pt">NX_CHAR</span></i></a><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt"></span></p><p style="font-size:12.8px;margin:9.6pt 0cm 6pt 108pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-size:10.5pt;font-family:Wingdings;color:black;letter-spacing:-0.1pt">§<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">  </span></span><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">Name of synchrotron</span></p><p style="font-size:12.8px;margin:9.6pt 0cm 6pt 72pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-size:10.5pt;font-family:'Courier New';color:black;letter-spacing:-0.1pt">o<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">   </span></span><b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">@short_name</span></b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">: </span><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-char" target="_blank"><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:rgb(202,121,0);letter-spacing:-0.1pt">NX_CHAR</span></i></a><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt"></span></p><p style="font-size:12.8px;margin-left:108pt"><span style="font-family:Wingdings">§<span style="font-stretch:normal;font-size:7pt;font-family:'Times New Roman'">  </span></span><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">short name for source, perhaps the acronym</span></p><span style="font-size:12.8px">Data describing the beam as it hits the sample should probably go the NX_Beam group in /entry/sample/beam.  None of the fields below are currently defined.  Could these definitions be adopted?</span><div class="gmail_extra" style="font-size:12.8px"><p><span style="font-family:Symbol">·<span style="font-stretch:normal;font-size:7pt;font-family:'Times New Roman'">      </span></span>/entry/sample/beam <a href="http://download.nexusformat.org/sphinx/classes/base_classes/NXbeam.html" target="_blank"><i><span style="color:rgb(202,121,0);letter-spacing:-0.1pt">NX_BEAM</span></i></a></p><p style="margin:9.6pt 0cm 6pt 72pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-size:10.5pt;font-family:'Courier New';color:black;letter-spacing:-0.1pt">o<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">   </span></span><b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">name</span></b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">: </span><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-char" target="_blank"><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:rgb(202,121,0);letter-spacing:-0.1pt">NX_CHAR</span></i></a><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt"></span></p><p style="margin:9.6pt 0cm 6pt 108pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-size:10.5pt;font-family:Wingdings;color:black;letter-spacing:-0.1pt">§<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">  </span></span><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">Name of beamline</span></p><p style="margin:9.6pt 0cm 6pt 72pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-size:10.5pt;font-family:'Courier New';color:black;letter-spacing:-0.1pt">o<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">   </span></span><b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">total_flux/xray_flux</span></b><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">: </span><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-float" target="_blank"><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:rgb(202,121,0);letter-spacing:-0.1pt">NX_FLOAT</span></i></a><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt"> {units=</span><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-rate" target="_blank"><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:rgb(202,121,0);letter-spacing:-0.1pt">NX_RATE</span></i></a><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">}</span></p><p style="margin:5pt 0cm 5pt 108pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-family:Wingdings">§<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">  </span></span><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">Beam intensity (example: s-1)</span></p><p style="margin:5pt 0cm 5pt 72pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-family:'Courier New'">o<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">   </span></span><b><span style="color:black;letter-spacing:-0.1pt">incident_beam_size: </span></b><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-float" target="_blank"><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:rgb(202,121,0);letter-spacing:-0.1pt">NX_FLOAT</span></i></a><i><span style="font-size:10.5pt;font-family:'Lucida Grande';color:black;letter-spacing:-0.1pt">[2]</span></i></p><p style="margin:5pt 0cm 5pt 108pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-family:Wingdings">§<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">  </span></span><span style="color:black;letter-spacing:-0.1pt">Two-dimensional array of FWHM (if Gaussian) or diameters (if top hat) of beam</span></p><p style="margin:5pt 0cm 5pt 72pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-family:'Courier New'">o<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">   </span></span><b><span style="color:black;letter-spacing:-0.1pt">profile</span></b><span style="color:black;letter-spacing:-0.1pt">: </span><a href="http://download.nexusformat.org/sphinx/nxdl-types.html#nx-char" target="_blank"><i><span style="color:rgb(202,121,0);letter-spacing:-0.1pt">NX_CHAR</span></i></a></p><p style="margin:5pt 0cm 5pt 108pt;line-height:15.75pt;background-image:initial;background-repeat:initial"><span style="font-family:Wingdings">§<span style="font-stretch:normal;font-size:7pt;line-height:normal;font-family:'Times New Roman'">  </span></span><span style="color:black;letter-spacing:-0.1pt">Gaussian or top hat</span></p><div class="gmail_extra"><br></div><div class="gmail_extra" style="font-size:12.8px"><span style="font-size:12.8px">Should the name of the beamline be recorded in beam or in source?  For the flux (as a rate - in contrast to the already existing flux density field "flux"), either name is fine by me.</span><br></div><div class="gmail_extra" style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div class="gmail_extra" style="font-size:12.8px"><span style="font-size:12.8px">I'm happy to discuss these points during the next NeXus meeting.</span></div><div class="gmail_extra" style="font-size:12.8px"><br></div>Thank you and all best</div><div class="gmail_extra" style="font-size:12.8px"><br></div><div class="gmail_extra" style="font-size:12.8px"><br></div><div class="gmail_extra" style="font-size:12.8px">Andreas</div><div class="gmail_extra" style="font-size:12.8px"><br></div><div class="gmail_extra" style="font-size:12.8px"><br></div><div><br></div>-- <br><div class="gmail_signature"><a href="https://www.dectris.com" target="_blank"></a><div><span style="font-family:Verdana;font-size:large">Andreas Förster, Ph.D.</span></div><div><font face="Verdana" size="1"><span style="color:rgb(128,128,128)">MX Application Scientist, Scientific Sales</span></font></div><div><span style="white-space:pre">       </span></div><div><font color="#808080" size="1"><font face="Verdana">Phone: </font></font><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">+41 56 500 2100</span><font color="#808080" size="1"><font face="Verdana"> </font><span style="font-family:Arial,Helvetica,sans-serif;line-height:14px">|</span><span style="font-family:Verdana"> Direct</span><span style="font-family:Verdana">:</span><span style="font-family:Verdana"> </span></font><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">+41 56 500 2176</span><font color="#808080" size="1"><span style="font-family:Verdana"> </span><span style="font-family:Arial,Helvetica,sans-serif;line-height:14px">|</span><span style="font-family:Verdana"> </span><font style="font-family:Verdana">Email:</font><span style="font-family:Verdana"> <a href="mailto:andreas.foerster@dectris.com" target="_blank">andreas.foerster@dectris.com</a></span></font></div><div><span style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana">DECTRIS Ltd. </span><span style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana;line-height:14px">|</span><span style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana;line-height:14px"> Taefernweg 1</span><span style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana;line-height:14px"> </span><span style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana;line-height:14px">| 5405 Baden-Daettwil</span><span style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana;line-height:14px"> </span><font style="font-size:x-small;color:rgb(128,128,128);font-family:Verdana;line-height:14px">| Switz</font><font size="1"><font face="Verdana"><font style="color:rgb(128,128,128);line-height:14px">erland</font><span style="color:rgb(128,128,128);line-height:14px"> </span><font style="color:rgb(128,128,128);line-height:14px">| </font></font><a href="https://www.dectris.com" target="_blank"><font face="Verdana">www.dectris.com</font></a></font></div><div><font size="1"><font style="color:rgb(128,128,128);font-family:Verdana;line-height:14px"><br></font></font></div><div><div><a href="https://www.linkedin.com/company/5067919" target="_blank"><img src="https://www.dectris.com/tl_files/root/signatur/linkein-ico1.png" alt="LinkedIn" style="width: 15px; height: 15px; margin-left: 400px; float: left;"></a></div></div><div> <a href="https://www.facebook.com/pages/Dectris-Ltd/623855944369304" target="_blank"><img src="https://www.dectris.com/tl_files/root/signatur/facebook-ico1.png" alt="facebook" style="width: 15px; height: 15px;"></a> <a href="https://twitter.com/DECTRIS_News" target="_blank"><img src="https://www.dectris.com/tl_files/root/signatur/twitter-ico1.png" style="width: 15px; height: 15px;"></a></div><div><br></div><div><br></div><div><img src="https://www.dectris.com/tl_files/root/signatur/dectris_plus%20slogan.png" style="float: left; height: 30px; width: 262px; margin-left: 195px;"></div><div><font face="Verdana" color="#808080" size="1"><br></font></div><div><font face="Verdana" color="#808080" size="1"><br></font></div><div><font face="Verdana" color="#808080" size="1"><br></font></div><div><font face="Verdana" color="#808080" size="1">Confidentiality Note: This message is intended only for the use of the named </font></div><div><font face="Verdana" color="#808080" size="1">recipient(s) </font><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">and may contain confidential and/or privileged information. </span><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">If you </span></div><div><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">are not the intended </span><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">recipient, please contact the sender and delete </span><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">the message.</span></div><div><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">Any unauthorized use of </span><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">the information contained in this </span><span style="color:rgb(128,128,128);font-family:Verdana;font-size:x-small">message is prohibited.</span></div><div><span style="color:rgb(128,128,128);font-family:Verdana;fo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