Helmholtz Zentrum Berlin

#HZBzlog

hzbHFM • Building the Strongest Magnet­ in the World of Neutron Scattering

Stairway to Heaven

Updates

  • authored 3 years ago:

    Geschafft!

    Nachdem der Magnet letzten Herbst in der Testhalle bereits gezeigt hatte, was er kann, steht er nun …

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  • authored 3 years ago:

    The world´s smallest movie..

    and the making of.

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  • authored 3 years ago:

    A bigger hammer

    Greg Boebinger a condensed matter physicist and Director of the National High Magnetic Field …

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  • authored 3 years ago:

    Killing superconductivity

    Elisabeth Blackburn a condensed matter physicist from Birmingham let us in on what she is keen on …

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  • authored 3 years ago:

    EXED Workshop: Talks about future experiments

    From 29-30 October, the HFM EXED workshop took place at the Lise-Meitner-Campus in Wannsee. The claim of the workshop was bringing researchers together who are working with high magnetic fields above 15 Tesla, doing neutron scattering. Despite to provide information about the HFM for interested researchers, the workshop should show possible future, high-magnetic field experiments using neutron …

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  • authored 3 years ago:

    Siemens Lufthaken

    We were shooting in the Technikum yesterday. Because the magnet is so huge it took quite a bit of …

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  • authored 3 years ago:

    Levitating Pumpkins!

    Here´s some fun for the weekend. I know Halloween has just passed but I still wanted to share this. …

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  • authored 3 years ago:

    "Will I get pulverised...

    …if I walk in there?" a man asked pointing towards the Technikum where the magnet is being tested. "Not by our magnet, but I don´t know who else is after you", one of the technicians answered. I immediately saw little Aliens on the Wannsee Campus pulverising whatever they came across. A fun thought - for a moment!

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    comments
  • authored 3 years ago:

    We got it! 26,286 Tesla!

    Dear all,this is today the proof of principle for the project and it gives me great satisfaction to report on this.This is the milestone for which many have worked very hard for long time! Thank you very much from my side to the teams at HZB and at NHMFL. Thank you for your motivation and for your personal dedication to the project for about seven and a half years since our collaboration contract …

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    comments
    • authored 3 years ago:

      Congratulations, that is amazing news!

    • authored 3 years ago:

      @Sibylle: they are just a great team of inventive engineers and physicists. I have heard that they did adapt carefully some of the valves in the helium system.

    • authored 3 years ago:

      What great news. Congratulations! I am curious to know how you resolved the rise in pressure in the Helium that Hartmut Ehmler wrote about in his last Post.

  • authored 3 years ago:

    Anup's View: on the magnet and his mission

    Recently I could talk with Dr. Anup K. Bera, one of the scientists waiting for the High Field Magnet. He wants to measure his tiny samples of strange materials, which show phase transitions triggered by magnetic fields. Here is what he told me:What has motivated you to become a scientist?Anup: When I was a child, I was very curious about aero planes; every object just fell down, except them. So I …

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  • authored 3 years ago:

    14.000 Ampere: Zuviel Druck im Kessel

    Nachdem wir den „Schluckauf“ der Kryoanlage in den Griff bekommen hatten, haben wir uns getraut, die Stromstärke langsam weiter zu steigern. Die Abschaltungen für den Notfall müssen aber erneut überprüft werden. Funktioniert alles noch genauso wie bei kleineren Strömen oder gibt es jetzt zusätzliche Effekte durch die insgesamt höhere Leistung? Ein Effekt ist, dass die supraleitende Spule sich …

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  • authored 3 years ago:

    Helium: Kühlmittel der Extreme

    Partyballons und Micky-Maus-Stimme: Für viele sind das die ersten Assoziationen mit dem Edelgas Helium. Dabei kann das zweite Element des Periodensystems noch viel mehr. Für die Grundlagenforschung und die Medizin ist es unersetzlich, aber auch Taucher, Raumfahrtingenieure und andere Techniker greifen gerne darauf zurück. Doch gerade, da es so begehrt ist und der weltweite Verbrauch immer weiter …

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  • authored 3 years ago:

    5.000 Ampère: Die Kryoanlage bekommt „Schluckauf“.

    Wie geplant haben wir die Stromstärke langsam hochgefahren, auf 5.000 Ampère. Aber dann ist doch etwas Unerwartetes aufgetreten: Wir haben eine plötzliche Abschaltung bekommen und wussten zunächst nicht warum. Das stellte sich dann schnell heraus: Die Einlasstemperatur an der Spule war zu hoch, statt wie vorgesehen 4,5 Kelvin war es ganze 5,0 Kelvin "warm". Dieser erhöhte Wert führte zur …

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  • authored 3 years ago:

    Testing shouldn't be exciting

    The HFM team is never left alone: This week, Mark Bird, the director of the Magnet Science and …

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  • authored 3 years ago:

    Quenching for fun

    It happened at the Large Hadron Collider in 2008 and it happens elsewhere: Quenching. And normally, …

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  • authored 3 years ago:

    Everything under control

    A snapshot of our control room. Here we monitor all relevant systems.

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    comments
  • authored 3 years ago:

    Selbstinduktion: Wenn sich Strom und Magnetfelder selbstständig machen

    Elektromagnetismus: Dieser etwas sperrige Begriff bedeutet nichts anderes, als dass Strom und Magnetfelder einfach zusammengehören. Wenn wir ausschließlich ruhende Ladungen betrachten, kommen wir gut ohne Magnetfelder zurecht. Anders sieht es aus, wenn sich diese Ladungen nun anfangen zu bewegen. Wenn sich umgekehrt Magnetfelder relativ zu einem Leiter bewegen bzw. ändern, stoßen wir auf das …

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  • authored 3 years ago:

    Ramping up the magnet: 2000 Amperes

    When we first tried to ramp the magnet we got failure right after starting the power supply. The quench detection had triggered a false quench due to the high ramp rate of the power supply. It took us some time to “smooth” the startup of the current so that this phenomenon disappeared. One channel of the quench detection had to be “muted” for the startup because it was just too sensitive. Finally …

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  • authored 3 years ago:

    Bestätigung von Murphy’s Law

    Eigentlich sind es gleich zwei:1) Wenn etwas kaputt geht, dann ein Teil, dessen Funktion du nicht …

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    comments
    • authored 3 years ago:

      Oh, wie wahr! Die kleinen unscheinbaren unwichtigen Teile zeigen einem doch immer wieder das ohne sie nichts läuft.

      Auf der Liste mit Equipmentproblemen, die dafür gesorgt haben dass wir nicht drehen konnten, hält die Stativschraube dauerhaft den ersten Platz!

      Sehr schöner Post!

    • authored 3 years ago:

      Dass unter allem, was kaputt gehen kann, ausgerechnet das scheinbar robusteste Teil löchrig wird, ist ja echt wie ein Bizarro-Lottogewinn. Nur gut, dass es der Turbopumpe nicht unter Volllast eine Atmosphäre entgegen geschleudert hat, das wäre teuer gekommen. So ist es glücklicherweise nur eine unterhaltsame Anekdote. :)

    • authored 3 years ago:

      Mannomann… Es wird definitiv nicht langweilig bei euch!

  • authored 3 years ago:

    Sound of Quenching

    Iain Dixon has come from the MagLab in Tallahassee, Florida. He is the one who designed most of the superconducting coil and led its fabrication. I spoke with him last Friday evening (in the control room, with some typical background noise), why he had come to see “his coil” now doing its first steps.Iain: I am in charge of the superconducting part of this hybrid magnet. So I am looking at the …

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  • authored 3 years ago:

    The sound of quenching

    Iain Dixon has come from the MagLab in Tallahassee, Florida. He is the one who designed most of the …

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  • authored 3 years ago:

    What 1000 Amps did do

    One thousand Ampère have been sent through the High Field Magnet now. Imagine: a normal household is served by max 16 Amps, this is largely sufficient to heat four hotplates on the kitchen stove, while using the laundry dryer and other machines as well. So 1000 Amps could serve 62 households in full and frenzy electric activity. In youtube I did find this intriguing but shaky video (here a …

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  • authored 3 years ago:

    1000 Amps for a start

    „Today is the day“, I thought when getting up this morning. After seven years of preparation the magnet is almost ready to put current through. “Almost ready” means that the number of some hundred tasks or open points have come down to a handful.“The magnet” on August 26th 2014 means a series connection of our resistive coil and our superconducting coil. Remember that our resistive coil has …

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    comments
    • authored 3 years ago:

      I am keeping my fingers crossed and can´t wait to see that 20.000 on the display. Good luck and keep us posted so we can take part in the excitement!

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