News Gallery
EASI goes back home (FHI) - December 2023
After another successful beamtime, now EASI has to go back home. Let's crane it up, pack everything, and put it in a truck from Hamburg to Berlin!
Left: EASI being lifted so it can be brought to the loading area of the building and put in the truck. Here we can see Florian and, again, Sebastian Kray with his huge help to this whole complicated process!
Right: Florian never says no to a challenge and was armed and ready to clean the granite block. Used sample, in the form of ice, inevitably falls in the granite throughout the hours and hours of measurements taken day and night during the beamtime.
Right: Florian never says no to a challenge and was armed and ready to clean the granite block. Used sample, in the form of ice, inevitably falls in the granite throughout the hours and hours of measurements taken day and night during the beamtime.
Left: The crew going out from the difficult mission of preparing EASI to go home safely and excited to see snow for the first time in the year!
Right: Dominik found something we think it was supposed to be a snowman and had to go and take a picture with it!
Right: Dominik found something we think it was supposed to be a snowman and had to go and take a picture with it!
Left: Our shiny Hemispherical Analyser can be used as a convex mirror for interesting pictures, and this time we can see the PETRA III building from the top while EASI is being craned.
Right: The crew having a nice dinner at Sammarkand, our favourite place besides the lab, and this time with the presence of the restaurant owner himself at our table!
Right: The crew having a nice dinner at Sammarkand, our favourite place besides the lab, and this time with the presence of the restaurant owner himself at our table!
EASI is back to the FHI, in the main hall of the Molecular Physics department. It is carefully being brought and put in place by the group members and the transportation crew. Here, again, the hemisphere is being used as a photography enhancement device.
Beamtime @ DESY (P04) / Hamburg - November 2023
Another beamtime at our well-known corner of the PETRA III building at DESY: the P04 beamline, which allows us, among many other projects, to perform PECD measurements in liquid phase with its undulators capable of producing circularly polarized light (both helicities) in a wide energy range (250 to 3000 eV).
Our EASI chamber being craned from the entrance of loading section of PETRA III building to the beamline. This time, we were graced with the presence of our super department member Sebastian Kray, to help (or to do most of) the job in this process. Thank you so much, Sebastian!
On the left we can see the chamber on the granite block, and already most of the cables were connected. There was still a lot to be done!
On the right there's the view from the viewport of the differential pumping stage. We use this viewport during the beam alignment process. On the top of the picture we can see the orifice through which the beam originated from the synchrotron has to go through to reach our liquid jet. The green fluorescence comes from the YAG paint present around the orifice to assist us in the alignment, and at that moment the beam was going through and we could see only a small amount of dispersed light exciting the YAG. This was a long exposure picture (a few seconds), everything appears much brighter that it actually is.
On the right there's the view from the viewport of the differential pumping stage. We use this viewport during the beam alignment process. On the top of the picture we can see the orifice through which the beam originated from the synchrotron has to go through to reach our liquid jet. The green fluorescence comes from the YAG paint present around the orifice to assist us in the alignment, and at that moment the beam was going through and we could see only a small amount of dispersed light exciting the YAG. This was a long exposure picture (a few seconds), everything appears much brighter that it actually is.
On the left we can see a YAG screen strategically placed at the end of our chamber, so that we can visualize the beam through its fluorecence even when it its wavelength is invisible. However, at that moment, the beam was set to its most brilliant mode which is "white light”, with full spectral range being transmited through our chamber. We use this mode during alignment only.
The image on the right shows the reflection of the beam (still in white light mode) in the liquid microjet, and we can fine tune the alignment of beam-to-microjet-to-skimmer a little bit more easily using two cameras.
The image on the right shows the reflection of the beam (still in white light mode) in the liquid microjet, and we can fine tune the alignment of beam-to-microjet-to-skimmer a little bit more easily using two cameras.
Wandertag (Hiking day) - September 2023
The Molecular Physics department went for a nice morning of exploration in the Berlin Undergrounds, to witness first-hand some of the World War II scenarios in our city such as a bunker in a Metro station. Unfortunately, pictures were not allowed there. In the afternoon, we had a nice walk towards the second adventure of the day: Mini Golf!
Dominik trying to find some deep connection with Nature while Bernd and Harman compete in a balance-keeping game.
On the left: a small part of the group which took a long walk around the nice area. Bruno, Florian, Harman, Dominik and Bernd.
On the right: serious looks of competition in this fierce and high-stakes sport. Henrik took a sit out of the allowed area!
On the right: serious looks of competition in this fierce and high-stakes sport. Henrik took a sit out of the allowed area!