Bezeichnung des Auftrags durch den Auftraggeber: Vector-magnet for scientific research, HZB No. The Helmholtz-Zentrum Berlin (HZB), Germany, is building instrumentation for basic research in physics using soft x-rays. The experimental endstation will be an integral part of a synchrotron beamline and is dedicated to small-angle scattering, x-ray holography and spectroscopy. The entire experimental apparatus will be operated in ultra-high vacuum. A crucial part of the setup is a superconducting 3-axis vector magnet. In the center of the magnet, soft x-rays will interact with a sample. The magnet is to be integrated into the vacuum chamber and has to be compatible with operation at 10-8mbar residual pressure. The magnet needs to be fully thermally shielded to remain operational under atmospheric pressure and room temperature. Scientific requirement prohibit vibrations down to 50 nm amplitudes; therefore the use of a cryo-cooler is not possible. The dimensions of the magnet may not exceed the size of a cube of (300 x 300 x 300) mm^3. In the center of the magnet, a magnetic field of 1 Tesla has to be applicable along any direction and with a homogeneity of <1 % over a volume of (1 x 1 x 1) mm^3. Experimental requirements include bores along the 3 cartesian axes through the magnet center of at least 50mm diameter for optical and mechanical access. One bore (the exit aperture along the beam path axis) is to be optimized for a maximum free scattering angle front the central interaction point towards the fringe of the bore. The angle between the central axis and the maximum clear angle in any direction should be as large as possible and amount to at least 10°. Other geometries maximizing the accessible solid angles can be discussed. Designs minimizing stray fields are preferred. The experiment requires a linear movement of the entire magnet inside the vacuum chamber up to 300 mm along the beam axis. As a result current and cooling supply structures need to be flexible inside the vacuum chamber. The vacuum chamber and internal and external mechanical fixtures will be designed and built by HZB; close coordination of the custom magnet design with the vacuum chamber design is thus required.
Deadline
Die Frist für den Eingang der Angebote war 2009-04-07.
Die Ausschreibung wurde veröffentlicht am 2009-03-31.
Auftragsbekanntmachung (2009-03-26) Objekt Umfang der Beschaffung
Titel: Magnets
Volltext:
“Bezeichnung des Auftrags durch den Auftraggeber: Vector-magnet for scientific research, HZB No. The Helmholtz-Zentrum Berlin (HZB), Germany, is building...”
Volltext
Bezeichnung des Auftrags durch den Auftraggeber: Vector-magnet for scientific research, HZB No. The Helmholtz-Zentrum Berlin (HZB), Germany, is building instrumentation for basic research in physics using soft x-rays. The experimental endstation will be an integral part of a synchrotron beamline and is dedicated to small-angle scattering, x-ray holography and spectroscopy. The entire experimental apparatus will be operated in ultra-high vacuum. A crucial part of the setup is a superconducting 3-axis vector magnet. In the center of the magnet, soft x-rays will interact with a sample. The magnet is to be integrated into the vacuum chamber and has to be compatible with operation at 10-8mbar residual pressure. The magnet needs to be fully thermally shielded to remain operational under atmospheric pressure and room temperature. Scientific requirement prohibit vibrations down to 50 nm amplitudes; therefore the use of a cryo-cooler is not possible. The dimensions of the magnet may not exceed the size of a cube of (300 x 300 x 300) mm^3. In the center of the magnet, a magnetic field of 1 Tesla has to be applicable along any direction and with a homogeneity of <1 % over a volume of (1 x 1 x 1) mm^3. Experimental requirements include bores along the 3 cartesian axes through the magnet center of at least 50mm diameter for optical and mechanical access. One bore (the exit aperture along the beam path axis) is to be optimized for a maximum free scattering angle front the central interaction point towards the fringe of the bore. The angle between the central axis and the maximum clear angle in any direction should be as large as possible and amount to at least 10°. Other geometries maximizing the accessible solid angles can be discussed. Designs minimizing stray fields are preferred. The experiment requires a linear movement of the entire magnet inside the vacuum chamber up to 300 mm along the beam axis. As a result current and cooling supply structures need to be flexible inside the vacuum chamber. The vacuum chamber and internal and external mechanical fixtures will be designed and built by HZB; close coordination of the custom magnet design with the vacuum chamber design is thus required.
Mehr anzeigen Ort der Leistung Berlin🏙️ Metadaten der Bekanntmachung
Dokumenttyp: Auftragsbekanntmachung
Art des Auftrags: Lieferauftrag
Verordnung: Europäische Gemeinschaften
Originalsprache: Deutsch 🗣️
Verfahren
Verfahrensart: Verhandlungsverfahren
Vergabekriterien
Wirtschaftlichstes Angebot
Angebotsart: Gesamtangebot
Art des öffentlichen Auftraggebers: Einrichtung des öffentlichen Rechts
Haupttätigkeit: Sonstiges
Öffentlicher Auftraggeber Identität
Name des öffentlichen Auftraggebers: Helmholtz- Zentrum Berlin für Materialien und Energie GmbH
Land: Deutschland 🇩🇪 Kontakt
Internetadresse: www.helmholtz-berlin.de🌏