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panda:index [2020/10/05 17:07]
Astrid Schneidewind
panda:index [2021/10/29 14:56]
Astrid Schneidewind
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 Hi and welcome on PANDA! We hope that you will like our instrument.  Hi and welcome on PANDA! We hope that you will like our instrument. 
-PANDA team - Astrid, Igor, Chris, Alistair, Mario, Michal, Anton, Nikolaos and Sebastian+PANDA team - Astrid, Chris, Alistair, Mario, Michal, Anton, Nikolaos and Sebastian
 ---- ----
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 {{ :panda:news_1_.svg?nolink&120}} {{ :panda:news_1_.svg?nolink&120}}
 +  * Preparing the upcoming cycle with thermal neutrons: Installing Cu-111-mono to reach higher energy transers, and Si-111-mono.
 +  * We had a very successful I2NS workshop: - thanks to all speakers, participants and organizers!.
 +  * MLZ has a slogan: Neutrons for Research and Innovation
 +  * Rajesh Dutta published his results on multiferroic Ba2CoGe2O7 under external magnetic fields. Thanks to  Rajesh and the team: 
 +  * Please find the extended abstract here:
 +  * Mario presented part of the PAND-AI work at CAMERA-workshop: “Autonomous Discovery in Science and Engineering”. Please find the extended abstract here: 
 +  * We moved to the offices in building UYL. Please note our new phone numbers.
 +  * The first 2021 paper was published by Anton, Dmytro and coworkers. Congratulations and many thanks!
 +  * Igor left the Pand group. All the best, Igor!
-  * Mario Teixeira Parente started on 1.10.2020 - to work on optimizing search strategies with AI methods. Welcome Mario! 
-  * Anton moved to TU Dresden. The contact will be kept, he is still a part of the Panda team. 
-  * Shang Gao's paper on antiferromagnetic skyrmions published in Nature. Congratulations! 
-  * Chris Franz joined the Panda group as a new member.  
-  * Nature Communications Physics on Heavy fermion superconductor CeCoIn5 published by Yu Song, Rice University | 
-  * PRB on Magnetic anisotropy in ferromagnetic CrI3 published by Lebing Chen, Rice University 
-  * PRX on Hidden-Order Symmetry in CeB6 published by P.Y. Portichenko, TU Dresden. 
-  * Proposal round 27: 100 beamdays requested.  
 </WRAP> </WRAP>
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   * how to write a proposal   * how to write a proposal
   * how to prepare sample and sample holder   * how to prepare sample and sample holder
 +  * [[panda:startexp|how to start your experiment]]
   * [[panda:map|how to reach us]]   * [[panda:map|how to reach us]]
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 </WRAP> </WRAP>
 +<WRAP half column round box>
 +===== What's happening at PANDA =====
 +<a class="twitter-timeline" data-width="500" data-height="500" href="">Tweets by POandaMlz</a> <script async src="" charset="utf-8"></script> 
 <WRAP group> <WRAP group>
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   * Petr Cermak     Carles University Prague, Low temperature magnetic laboratory MGML      -   * Petr Cermak     Carles University Prague, Low temperature magnetic laboratory MGML      -
   * Benqiong Liu     Institute of Nuclear Physics and Chemistry: Mianyang, Sichuan, CN   * Benqiong Liu     Institute of Nuclear Physics and Chemistry: Mianyang, Sichuan, CN
-  * Enrico Faulhaber   MLZ - TU Munich, Nicos team +  * Enrico Faulhaber   MLZ - TU München, Nicos team 
-  * Niels Pyka+  * Niels Pyka - GSI, Subproject SIS100/SIS18 (SIS) 
   * Roland Schedler - Experimental Physik, Siemens   * Roland Schedler - Experimental Physik, Siemens
   * Martin Rotter -   * Martin Rotter -
-  * Peter Link MLZ - TU Munich, head of Neutron Optics  - +  * Peter Link MLZ - TU München, head of Neutron Optics  - 
-  * Michael Loewenhaupt - +  * Michael Loewenhaupt, TU Dresden -
-  *  +
-  *  +
-  *  +
-  *  +
-  * +
-  *  
 </WRAP> </WRAP>
 <WRAP half column round box> <WRAP half column round box>
-===== Typical inelastic (TAS) neutron experiment  ===== +===== Long-term guests on Panda  ===== 
-{{ :panda:attach_1_.svg?nolink&120}}+{{ :panda:welcome.svg?nolink&120}}
-Before coming to the instrument  +List of long-term guests on Panda (when) and their current affiliation:
-Know your system's lattice parameters and angles, and it'symmetry. +  * Anton Kulbakov (2019-2020)TU Dresden,  
-Decide about the sample orientation you get only one plane+  * Ben-Qiong Liu (2016-2018), now China Academy of Engineering Physics · Institute of Nuclear Physics and Chemistry, Mianyang 621900, People'Republic of China 
 +  * Iwan Sumirat (2014), now Leader of Neutron Triple Axis Spectroscopy Group, Neutron Beam Technology Division, Center for Science and Technology of Advanced Materials, National Nuclear Energy Agency of Indonesia BATAN, Indonesia 
 +  * Peng Cheng (2013/14), now Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China 
 +  * Shiliang Li, now Professor at Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
-Create hkl-intensity-list (reflection list). --info about forbidden reflections and the (relative) intensities of the allowed. - Have it available for starting the experiment.+   
-Mark the crystal direction on the sample holder 
-Mount the sample properly. Think about covering the glue or holder and about either fixing the sample by Al wire or mounting an Al foil bag around. 
-Mark the crystal direction outside on the cryostat 
-For magnets, sample mounting needs to be better than within 1°. Depending on the instrument, care that one crystal direction is parallel to the goniometer axis. 
-Start experiment. Experiment name, sample name, give sample metadata to system 
-Align the sample 
-  * move instrument to elastic position 
-  * calculate (hkl) of a strong allowed refelction in your scattering plane for your kf 
-  * if there is no allowed reflection within the available q-range, think about removing the filter and orient at  
-  * move stt/a4 to scattering angle 
-  * rotate sample for 181° minimum (sometimes SE will hinder you, then take what you get) 
-  * you should find at least one reflection, and the angles between refelctions should represent the symmetry of the crystal 
-  * if there are more reflections than expected or the angles are wrong: filter forgotten? more than one grain? - think and decide  
-  * if ok - move sth/a3 to maximum of the reflection. Take the one better suited for SE/other constraints  
-  * go to maximum of the peak, define sth/a3 for the reflection [panda: setalign((h,k,l), nn)] 
-  * gonio-scan in the related direction, go to max. 
-  * check height 
-  * repeat gonio-scan, until there is no relevant change 
-  * check the lattice parameter. Care that horizontal focus is flat for this scan. 
-  * adjust lattice parameter 
-  * check gonio, height, lattice parameter iteratively up to no relevant changes occur. care about foci 
-  * after last lattice parameter scan, define sth/a3 
-  * claculate orthogonal reflection 
-  * go there, you should find it immediately 
-  * gonio-scan, lattice parameter iteratively (remember foci. height should be ok) 
-  * adjust lattice patametr, fix gonios 
-  * in case sth/a3 does not fit perfectly for both reflections, decide about a compromise depnding on you measureing goal 
-  * check lattice parameters at the temperature you want to measure 
-  * start first inelastic scans 
-Good luck!!!! 
 </WRAP> </WRAP>
panda/index.txt · Last modified: 2021/11/02 12:44 by Astrid Schneidewind