This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
panda:index [2020/10/05 08:52] – Astrid Schneidewind | panda:index [2021/05/19 09:42] – Astrid Schneidewind | ||
---|---|---|---|
Line 3: | Line 3: | ||
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, | + | PANDA team - Astrid, |
---- | ---- | ||
Line 12: | Line 12: | ||
{{ : | {{ : | ||
- | * Bambus is grwoing - aligment of analyzer crystals and detectors is under work. | + | |
- | * Anton moved to TU Dresden. He will stay a part of the panda team. | + | * Please find the extended abstract here: https://arxiv.org/abs/2105.07716 |
- | * Shang Gao's paper on antiferromagnetic skyrmions published in Nature. Congratulations! | + | * Mario presented part of the PAND-AI work at CAMERA-workshop: “Autonomous Discovery in Science and Engineering” |
- | * Chris Franz joined | + | * We moved to the offices |
- | * Nature Communications Physics on Heavy fermion superconductor CeCoIn5 published by Yu Song, Rice University https:// | + | * The first 2021 paper was published by Anton, Dmytro and coworkers. Congratulations and many thanks! |
- | * PRB on Magnetic anisotropy | + | * Igor left the Pand group. All the best, Igor! |
- | * PRX on Hidden-Order Symmetry in CeB6 published by P.Y. Portichenko, TU Dresden. https://doi.org/ | + | * Data measured in 2005 on PrNi systems are published now! Thanks Pavel and colleagues for exploiting them!!!! |
- | * proposal round 27: 100 beamdays requested. | + | * Mario Teixeira Parente started |
- | * Nikolaos Biniskos joined | + | * Anton moved to TU Dresden. The contact will be kept, he is still a part of the Panda team. |
- | * Michal Stekiel joined the Panda team. | + | |
- | * Physical Review Research | + | |
- | * PRL on Heavily Hole-Doped KFe2As2 Superconductor published by Shoudong Shen, Fudan University Shanghai. https:// | + | |
</ | </ | ||
Line 59: | Line 59: | ||
* 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: | ||
* [[panda: | * [[panda: | ||
| | ||
Line 107: | Line 108: | ||
</ | </ | ||
+ | <WRAP half column round box> | ||
+ | ===== What's happening at PANDA ===== | ||
+ | < | ||
+ | <a class=" | ||
+ | </ | ||
+ | </ | ||
<WRAP group> | <WRAP group> | ||
Line 119: | Line 126: | ||
* Petr Cermak | * Petr Cermak | ||
* Benqiong Liu | * Benqiong Liu | ||
- | * Enrico Faulhaber | + | * Enrico Faulhaber |
- | * Niels Pyka | + | * Niels Pyka - GSI, Subproject SIS100/ |
* Roland Schedler - Experimental Physik, Siemens | * Roland Schedler - Experimental Physik, Siemens | ||
* Martin Rotter - www.mcphase.de | * Martin Rotter - www.mcphase.de | ||
- | * Peter Link MLZ - TU Munich, head of Neutron Optics | + | * Peter Link MLZ - TU München, head of Neutron Optics |
- | * Michael Loewenhaupt - https:// | + | * Michael Loewenhaupt, TU Dresden |
- | * | + | |
- | * | + | |
- | * | + | |
- | * | + | |
- | * | + | |
- | * | ||
| | ||
</ | </ | ||
+ | |||
<WRAP half column round box> | <WRAP half column round box> | ||
- | ===== Typical inelastic (TAS) neutron experiment | + | ===== Long-term guests on Panda |
- | {{ :panda:attach_1_.svg? | + | {{ :panda:welcome.svg? |
- | Before coming to the instrument: | + | List of long-term guests on Panda (when) and their current affiliation: |
- | Decide about the sample orientation | + | * Anton Kulbakov (2019-2020), TU Dresden, |
+ | * Ben-Qiong Liu (2016-2018), | ||
+ | * 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. | + | |
+ | </WRAP> | ||
- | 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, | ||
- | * 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, | ||
- | * check lattice parameters at the temperature you want to measure | ||
- | * start first inelastic scans | ||
- | |||
- | Good luck!!!! | ||
- | |||
- | </ | ||
</ | </ | ||