Helmholtz Zentrum Berlin

#HZBzlog

BESSY • The ideal microscope for space and time

Guns, boosters and accelerators

Updates

  • authored 2 years ago:

    PokeStop BESSY

    BESSY daily attracts people from all over the world, such as scientific visitors, users, summer students, school classes, exchange studens and so on and so on. We are used to seeing people come, stay and go. But hey guys, what´s recently going on here ? For two weeks now we are observing more and more - mostly young - people gathering in front of our main entrance. The crowds come by afternoon, …

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  • authored 2 years ago:

    What our basque student did: Eukeni´s SRF story

    We have no real "summer slumpt" in our SRF institute. Of course some of us are on vacation, but those who are not are doing around busily.It was mainly curiosity that today I walked over to our dependance lab at "Schwarzschildstraße". For almost two months we´ve now had a student from the University of the Basque Country in Leioa working there. Heaven, where is Leioa? Oh, I had to google that and …

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  • authored 2 years ago:

    Greetings from... Part 7: CERN again

    When visiting CERN, it´s recommendable to join the open tour for visitors. It guides you to one of the four famous detector experiments: ATLAS at the swiss Meyrin site.ATLAS stands for A Toroidal LHC ApparatuS.The ATLAS buildingATLAS became world famous for the search and detection of the HIGG´s particle, but it investigates a wider range of topics, such as the search for dark matter or extra …

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  • authored 2 years ago:

    Greetings from... Part 6: Neutrinos @KATRIN Karlsruhe

    When the Helmholtz Association held its second workshop on “Matter and Technology” in Karlsruhe in march, I spent two days at the Karlsruhe Institute of Technology (KIT). Initially I joined the workshop because I had liked to see ANKA, the Karlsruhe synchrotron http://www.anka.kit.edu.But since ANKA was busily working that time and the storage ring was on duty, no access to its machine was …

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  • authored 2 years ago:

    Greetings from... Part 5: "The cavity makers"

    “Going to see WHAT?” some colleagues commented in winter when I accompanied two of our physicists to their meeting in Bergisch Gladbach near Cologne. When we jumped onto the plane we were heading to one of our companies whom I call our “cavity makers”.It´s been the first time that I truly understood how much effort is invested in not only ´playing around´ with the performance of such a finicky …

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  • authored 2 years ago:

    Cruising the bERLinPro building site

    The bERLinPro building has undergone a skyrocketing progress thanx to the heroes of workmen and HZB planners involved.This is a view into the direction of the coming HF- (high frequency) and Cryo space. It´s hardly conceivable that one day we will see huge solid state amplifiers and the cooling technology toys there.View into the future accelerator hall beneath the ground. What is now full of …

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  • authored 3 years ago:

    Heavy traffic and it´s raining concrete

    November 24th - the bERLinPro construction site really rocked.1,400,000 litres of concrete were being delivered for the base plate of bERLinPro. This plate is scheduled to have a thickness of 1 m. Thus a total amount of 180 concrete mixer charges arrived, five per hour, within 12 hours from 6 a.m. to 6 p.m., to pour the bottom plate as a continuous, homolithic piece. The smoothening of the mass …

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  • authored 3 years ago:

    He came a long way

    The latest research and development projects at HZB attract an increasing number of international specialists, mainly physicists and engineers, to BESSY. It would be interesting to simply count the number of nations represented on this corridor… One nation which I kept missing and thought it would be nice if it arrived here, was Greek. And lately it did! So, “how”, I asked him, “did someone come …

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  • authored 3 years ago:

    Greetings from... Part 4: Elettra, Sincrotrone Trieste, Italy

    It´s been a very early Friday morning in June at the end of my holidays in Slovenia. High above the city of Trieste Dr. Pasotti, head of the electromagnetism and RF section of Elettra, Sincrotrone Trieste (https://www.elettra.trieste.it/) met me at the parking lot to catch me up for a thrilling tour. I had gotten to know her two years ago when BESSY was hosting the ESLS-RF workshop 2013. ESLS-RF …

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  • authored 3 years ago:

    Die Idee des ERL - ein Rückblick

    Silvia hat vor 10 Tagen in ihrem Post über den Spatenstich für eine neue Testhalle berichtet. Denn in Adlershof entsteht ein Linearbeschleuniger mit Energierückgewinnung, kurz: ERL(Energy Recovery Linac).In seiner Rede verglich Projektleiter Andreas Jankowiak sein Team und die Kollegen dabei mit "Langstreckenläufern, die Neuland betreten". Schließlich gebe es die Idee eines ERL schon seit den …

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    • authored 3 years ago:

      Danke, Jonas! Besonders beeindruckend finde ich ja, dass das Jefferson Lab schon 99.98 % der Energie zurückgewinnt. Dass die Forscher am CERN über die ERL-Technologie nachdenken, wusste ich auch noch nicht. Aber das muss sich echt lohnen! Eine Milliarde Kilowattstunden verbraucht das CERN, sagt zumindest das Wissenschaftsmagazin nano.

  • authored 3 years ago:

    New challenge: Retirement!

    Last Friday, Gode was officially taking his leave. At his farewell party, colleagues and guest speakers from DLR and DIAMOND valued not only his big contributions to accelerator science but also his qualities as a team player, who is always ready to help. “Gode has the gift of explaining complex issues in simple terms,” one of them said. As a physicist, Gode had really an amazing score of …

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    • authored 3 years ago:

      It was a very nice party with impressive talks! My highlight: When Gode explained how he started with accelerator physics and showed us his first working tools from over more than 35 years ago.

  • authored 3 years ago:

    He was just crossing the street and suddenly he knew what he had to do!

    Last year, I could speak with physicist Godehard Wüstefeld, who is one of the leading experts of the BESSY VSR project, here is the interview (short version) again. The full text is available in english here and in german as audiofile here:BESSY-VSR does not have just one superconducting cavity but two. Why is that?Godehard: It's a special trick that allows us to simultaneously accommodate both …

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  • authored 3 years ago:

    BERLinPro und BESSY VSR

    Große, vielversprechende Namen – doch was steckt eigentlich dahinter?Sowohl BERLinPro als auch BESSY VSR sind Zukunftsprojekte, mit denen das HZB langfristig seine gute Stellung auf dem internationalen Forschermarkt verteidigen und das Angebot für die Nutzerinnen und Nutzer vergrößern kann. Sie beide werden vom Team um Andreas Jankowiak am Standort von BESSY II in Adlershof entwickelt. Doch ihre …

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  • authored 3 years ago:

    Spatenstich für eine Testanlage eines Linearbeschleunigers mit Energierückgewinnung (ERL)

    Gestern war großes Stelldichein auf der Baustelle von bERLinPro. Etwa 200 Gäste waren gekommen, um bei dem feierlichen Spatenstich für die neue Beschleunigerhalle dabei zu sein. Ein wirklicher Meilenstein, denn jetzt wird die Arbeit sichtbar, die die Kollegen und Kolleginnen seit Jahren investieren, um einen Linearbeschleuniger mit Energierückgewinnung zu bauen. In der Nähe von BESSY II wird eine …

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  • authored 3 years ago:

    Dancing synchrotron light

    This is no simulation, but a real measurement of the synchrotron light beam cross section. The beam …

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  • authored 3 years ago:

    Finding The Speed Of Light With Peeps

    Summer break is almost over! If you're still looking for some fun experiment to do at home, maybe …

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  • authored 3 years ago:

    The BESSY-VSR principle

    The second video produced by Paul Goslawski with the help of many dedicated colleagues shows the …

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  • authored 3 years ago:

    BESSY-VSR: The Problem

    Around a year ago, accelerator physicist Paul Goslawski proved his diverse talents and creativity by …

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  • authored 3 years ago:

    Greetings from... Part 3: MAMI- a racetrack microtron

    see english version belowPart 1: Der Blick hinter die Bleimauern- wie ich zur Beschleunigertouristin wurdePart 2: Der Blick hinter die Bleimauern- wie ich zur Beschleunigertouristin wurdeDer Urlaub nach Pfingsten startet mit einer Stippvisite im Shutdown bei MAMI bei unseren Mainzer Kollegen tief im Westen der Republik. Das, was einen eigentlich so vermeintlich knuffigen Namen trägt und vom …

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  • authored 3 years ago:

    Gestatten: Der neue Geschirrspüler! May we introduce: The new dishwasher!

    Damit supraleitende Cavities tun, was sie tun sollen, - nämlich supraleiten -, müssen primär zwei …

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  • authored 3 years ago:

    Greetings from... Part 2: Looking behind the lead walls - How I became an accelerator tourist

    English version belowTeil 1 Der Blick hinter die Bleimauern - wie ich zur Beschleunigertouristin wurde. Teil 2Im August holte ich, wie schon in der Episode „Guns, boosters & accelerators“ beschrieben, ein entliehenes Cavity ans HZB zurück. DELTA ist die Dortmunder Lichtquelle, die von den dortigen Kollegen mit sehr viel Herzblut betrieben wird.Eine Abfallkiste enthielt wunderschönen Kupferdraht, …

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  • authored 3 years ago:

    Greetings from... Part 1 - Looking behind the lead walls- how I became an accelerator tourist

    english version belowDer Blick hinter die Bleimauern- wie ich zur Beschleunigertouristin wurdeWenige Monate, nachdem ich begonnen hatte, für die SRF-Enthusiasten zu arbeiten, fand ich mich fasziniert auf die im Büro meines Chefs hängende Karte der weltweiten Lichtquellen starrend wieder. Was, dachte ich mir, wäre, wenn… ich mir diese ganzen Institutionen selbst anschauen könnte? Und warum …

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    comments
    • authored 3 years ago:

      Nun, momentan "parke" (und chille) ich in Slowenien beim Wildwasser-kayaken zwischen der Visite beim MAMI, Mainz und Elettra, Triest. Bevor ich dann davon erzähle, könnte "Part 2" der obigen Reportage die Wartezeit vielleicht verkürzen... :-)

    • authored 3 years ago:

      Oh wow, Das nenne ich Enthusiasmus. Sehe erst jetzt diese tolle Reportage. Und ja, über die Fahrt mit der Transsib hätte ich auch gern mehr gelesen. Welcher Beschleuniger wird denn deine nächste Station sein?

    • authored 3 years ago:

      Eine tolle Reportage, insbesondere über die Reise mit der Transsib hätte ich gerne noch mehr gelesen. Schreib weiter!

  • authored 3 years ago:

    Why I study physics?

    Well actually I don´t but I really liked this video by Xiangjun Shi who does.

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    • authored 3 years ago:

      Was ist DAS denn? Das ist ja wundervoll! Solcherlei Gedanken... ...haben mich durch´s Lernen auf mein grottenschlecht und lediglich dank eines "mit Geologen gnädigen" Prüfers überhaupt-und-irgendwie-bestandenes Physik-Vordiplom (deep-deep down im Schuhkarton versteckt...) begleitet. Vielen Dank, Kerstin, für´s Teilen dieses Videos!

      Eine Geologin unter Physikern fühlt sich gerade sehr wohl und immer wieder angekommen.

    • authored 3 years ago:

      Danke, Kerstin! Da bin ich doch beim morgendlichen Gang zur Uni gleich viel motivierter! :-)

  • authored 3 years ago:

    A tiny sample

    A BESSY II Film is in the make and this was our first shot. Our Chemist showing just how tiny her …

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  • authored 3 years ago:

    Physikers wollen Torte

    Manchmal stehen sie in diesem Sekretariat und philosophieren über alles andere als Physik. Gestern …

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  • authored 3 years ago:

    Dance your synchrotron!

    Wenn Worte versagen: Am HZB tanzt man neuerdings Forschung. Hat Spaß gemacht :)The Film in English …

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  • authored 4 years ago:

    Soundwaves for the eyes

    Since we talked so much about waveforms and cavities in this episode and started off with Einstein's …

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  • authored 4 years ago:

    Amazing colors

    are just one small aspect of light.Having left the year of crystallography behind it is now the …

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  • authored 4 years ago:

    DIY Particle Accelerator

    No reason to get bored during the chrismas holidays: Build your own Particle Accelerator with Lego …

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  • authored 4 years ago:

    Sie sind dann mal weg - Gone Fishing

    Es ist sehr ruhig in diesen Tagen bei BESSY. Wir sind nur ein paar Leute auf dem Flur, und jemand wurde gesehen, wie sie kam, um ihre Pflanzen zu giessen. Diese sehr ruhige und kreative Arbeitsathmosphäre ist genial zum Denken und zur Konzentration, insbesondere nach dem Trubel im Haus vor Weihnachten.Unsere Expats setzen dieses Jahr neue Maßstäbe durch ihre Türzettelchen. Angefangen hat damit der …

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  • authored 4 years ago:

    Frohe Weihnachten

    Wir wünschen allen ein frohes und friedliches Weihnachtsfest.Ein paar einfache Experimente um das Weihnachtsessen abwechslungsreich zu gestalten findet ihr hier. Diejenigen die etwas mehr Zeit und Lust haben mit Ihren Kindern zu experimentieren finden hier noch eine erweiterte Auswahl.Wishing everyone a merry and peaceful Christmas. You can find some easy experiments to spark up your Christmas …

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  • authored 4 years ago:

    Maxwell´s Equations

    in very general and short terms by World Science U. For a deeper look Jonas Böhm wrote a great …

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  • authored 4 years ago:

    The Bead-Pull

    Cavities are a great way to work with electromagnetic fields. But multi-cell cavities have different modes in their cells and every mode has its own field distribution. How do you know, the field inside the cavity looks like? Therefore, scientists are often using Bead-Pull measurements or just Bead-Pull - and its name already reveals the way that method works out. A bead is being pulled through a …

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  • authored 4 years ago:

    True Data:

    The bead-pull system is a tool to characterize cavities after fabrication. By passing a bead through …

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    comments
    • authored 4 years ago:

      Hi Roswitha, Fermilab is not really X-massy, yet. Unlike the last years we have no snow but rain and fog. More like November in Berlin than Christmas in Chicago...

    • authored 4 years ago:

      Yes, Julia, indeed. It seems that Fito is getting well prepared for working with those superconductors-impatiently-awaited-to-come. By the way... how is Fermilab getting prepared for X-Mas?

    • authored 4 years ago:

      And this is incredible useful! I remember when I had some questions about my measurements and could go to Adolfo and his setup and ask for help. The problem comes with the multicell-cavities. As soon as you put several single resonators together and you only have "eyes" (antennas) in the first and the last cell, the problems start. Up in the picture there is a copper cavity with 5 cells (5 bubbles). When we do a high frequency test, we have to trust the simulations that were done beforehand to have a correct interpretation of our data. So when something is different than expected we can go to Adolfo and ask him to have a look at the electromagnetic field in ALL cells.

      Thanks again for your help in September, by the way.

  • authored 4 years ago:

    For all of our languages...

    Rückblende: Sommeranfang im HZB. Meine Kollegin und ich stehen in der Teeküche und bereiten Fingerfood für Yuriys Promotionsfeier vor. Yuriy, für seine Dissertationsverteidigung bereits im Anzug, schwirrt nervös, aber gutgelaunt um uns herum und schwatzt uns auf Englisch voll wie eine Schwalbe. Er kam aus Novosibirsk ans HZB und wird in wenigen Stunden an der Humboldt-Uni dafür sorgen, dass aus …

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  • authored 4 years ago:

    D-Lecture: A Light and a Beam!

    How to make better beams, that's a question which is not only tormenting physicists at BESSY-VSR. So …

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  • authored 4 years ago:

    Chunk of cheese- designing superconducting cavities

    When designing the cavities Adolfo started with a segment that looks much like a chunk of cheese. He …

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    comments
    • authored 4 years ago:

      Physics is the art of simplifying a problem until you can solve it. Adolpho demonstrates this quite nicely, when he starts analyzing the fields inside the center cell. Still, it doesn't mean that physics is simple....sorry for this.

    • authored 4 years ago:

      I have to admit that I don't understand most of this, except that it seems to be incredibly complicated to get those electrons to pass through those bulky parts in a straight line. Duly impressed.

  • authored 4 years ago:

    Herzlichen Glückwunsch, Markus!

    Markus Ries, Mathias Richter (vom Freundeskreis des HZB) und Alex M. Frano Perreira (von l.n.r.).Im Rahmen des BESSY II Nutzertreffens verlieh der Freundeskreis des HZB den Ernst-Eckhard-Koch-Preis für ausgezeichnete Promotions-Arbeiten. Dieses Jahr gab es zwei Preisträger: Dr. Alex M. Frano Perreira und Dr. Markus Ries. Markus forscht zur Beschleunigerphysik und das Besondere an seiner Arbeit …

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  • authored 4 years ago:

    Wave Machine with Jelly Babies

    To understand waves can be tricky, but this demonstrator will help! To build this fully functional …

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  • authored 4 years ago:

    Management by walking

    Im Vorzimmer laufen die Fäden zusammen, jeder will was, am besten gleich: Roswitha Schabardin managt das und interessiert sich gleichzeitig leidenschaftlich für die Physik. Im Interview erzählt sie von ihrer Arbeit. Hören können Sie das Interview in Soundcloud, hier lesen sie die schriftliche Fassung.Wie bist du ans HZB gekommen?Als ich mich in Berlin beruflich etablieren wollte, war in Adlershof …

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  • authored 4 years ago:

    What´s on a physicist´s mind?

    Adolfos whiteboard at the end of this working week - friday afternoon...Am Ende von Adolfos …

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    comments
    • authored 4 years ago:

      Thanks Julia, for explaining us Adolfo´s mind :-) For me the most funny detail on this whiteboard seems to be the cartoon on the left side of this grey wiping device. A plug being unplugged from the power point. When I noticed that, I faintly remembered the expression on his face when I cheerfully told him that I would love to take this photo of his whiteboard to post it. That moment he would have liked to unplug m e, I guess...

      Danke, Julia, dass Du uns Adolfos Gedanken erklärt hast :-) Für mich ist das lustigste Detail auf dieser Wand der Cartoon links von dem grauen Wischer. Ein Stecker, getrennt von der Steckdose. Als mir das auffiel, erinnerte ich mich schwach an seinen Gesichtsausdruck, als ich ihm hochbegeistert sagte, ich würde so gerne sein Whiteboard fotografieren, um das Bild zu posten. Ich glaube, in dem Moment hätte er m i r den Stecker gerne gezogen...

    • authored 4 years ago:

      Thanks, @Julia, I'd been wondering about this! As a non-physicist this looks much like abstract art to me. Pretty though :)

    • authored 4 years ago:

      Well, that looks like a lot of work. The nice thing about that picture is that is displays a lot of things that were disussed in th last posts: The funny wavy lines indicate cavity structures - just like the cavity that Roswitha was driving around - and on the bottom right you can see electric and magnetic field distribution of the standing wave in the structure.

  • authored 4 years ago:

    Electrifying: A Look on Maxwell's Equations

    Beautiful – that word often comes into people’s mind when they are thinking of Maxwell’s equations. So it’s no wonder that these short but fundamental formulas gained cult status among science interested people. These few letters and signs, which are the basics of electrodynamics, are printed on cups, T-shirts and so on. Some people go even further and tattoo themselves with Maxwell’s equations as …

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    comments
    • authored 4 years ago:

      I read through Wikipedia trying to shed some light on Maxwells Equations but you outdid them by far. Thank you, Jonas.

    • authored 4 years ago:

      Jonas, that is fantastic to read! Thank you. It is just so amazing that a set of such apparently simple equations is describing such a huge part of our reality.

  • authored 4 years ago:

    Playing around with fancy geometries

    To design a SRF cavity we make use of a "3D electromagnetic" software which allows us to compute the electric and magnetic field distribution inside and on the surface of a given prototype. These fields will later interact with the electron bunches and define how much energy losses one will have on the surface. Once the design is fulfilled, we will be able to use such a cavity to accelerate …

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  • authored 4 years ago:

    Sound of music and the perfect cavity

    Music is complex and somehow organised SOUND! When Einstein played, he used the bow to transfer energy to create vibrations, not only in the strings but as well in the violin’s body. And this body is of a very specific morphology, it resonates with the vibrations, reinforcing specific frequencies and their harmonics, thus creating the characteristic voice of the violin.Long before Einstein, …

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    comments
    • authored 4 years ago:

      It is just an analogy: Between building a perfect violin and constructing the super cavity, there might be some similarities - but a lot of differences as well. But you are right: those Chladni patterns are amazingly beautiful.

    • authored 4 years ago:

      Patterns of salt crystals, the struggle for a standing wave and music have got somewhat in common!? How amazing to learn!

      Salzkristallmuster, die Bemühung um die Stehende Welle und Musik haben Parallelen!? Das ist faszinierend!

  • authored 4 years ago:

    Wandernde Kavitäten / Moving Cavities

    ((Please scroll down for the english version))Es war einmal… ein hübsches, fünfzelliges Prototyp Kupfer-Cavity…Jenes ursprünglich vom US-Labor Jefferson Lab ans HZB entliehene Cavity war im April diesen Jahres zu Testzwecken an die TU Dortmund und deren Beschleuniger DELTA ausgeliehen worden.Über den Sommer wurde dann Adolfo, unser spanischer SRF-Kollege mit der Entwicklung seines …

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