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Ahokas J, Semakin A, Järvinen J, Hanski O, Laptiyenko A, Dvornichenko V, Salonen K, Burkley Z, Crivelli P, Golovizin A, Nesvizhevsky V, Nez F, Yzombard P, Widmann E, Vasiliev S. A large octupole magnetic trap for research with atomic hydrogen. Rev Sci Instrum 2022; 93:023201. [PMID: 35232145 DOI: 10.1063/5.0070037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
We describe the design and performance of a large magnetic trap for storage and cooling of atomic hydrogen (H). The trap operates in the vacuum space of a dilution refrigerator at a temperature of 1.5 K. Aiming at a large volume of the trap, we implemented the octupole configuration of linear currents (Ioffe bars) for the radial confinement, combined with two axial pinch coils and a 3 T solenoid for the cryogenic H dissociator. The octupole magnet consists of eight race-track segments, which are compressed toward each other with magnetic forces. This provides a mechanically stable and robust construction with a possibility of replacement or repair of each segment. A maximum trap depth of 0.54 K (0.8 T) was reached, corresponding to an effective volume of 0.5 l for hydrogen gas at 50 mK. This is an order of magnitude larger than ever used for trapping atoms.
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Affiliation(s)
- J Ahokas
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - A Semakin
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - J Järvinen
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - O Hanski
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - A Laptiyenko
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - V Dvornichenko
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - K Salonen
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - Z Burkley
- ETH Zurich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - P Crivelli
- ETH Zurich, Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - A Golovizin
- P.N. Lebedev Physical Institute, 53 Leninsky pr., Moscow, Ru-119991, Russia
| | - V Nesvizhevsky
- Institut Max von Laue-Paul Langevin, 71 Avenue des Martyrs, Grenoble F-38042, France
| | - F Nez
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Université, Collège de France, 75252 Paris, France
| | - P Yzombard
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Université, Collège de France, 75252 Paris, France
| | - E Widmann
- Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Kegelgasse 27, A-1030 Wien, Austria
| | - S Vasiliev
- Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
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Poddubnaya I, Babicheva L, Kaplanov K, Zaritskey A, Volodicheva E, Alexeev S, Loginov A, Orlova R, Dvornichenko V, Gladkov O, Kosinova M, Serduk O, Milovanov V, Myasnikov A, Suresh AV, Jain M, Patil S, Rajappa SJ, Ivanov R, Chernyaeva E. Comparison of pharmacokinetics and pharmacodynamics of BCD-020 with innovator rituximab in patients with indolent non-Hodgkin lymphoma. J Clin Oncol 2014. [DOI: 10.1200/jco.2014.32.15_suppl.e19545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- I. Poddubnaya
- Russian Medical Academy for Postgraduate Education, Oncology Department, Moscow, Russia
| | - L. Babicheva
- Russian Medical Academy for Postgraduate Education, Oncology Department, Moscow, Russia
| | - K. Kaplanov
- Volgograd Regional Clinical Oncological Dispensary, Volgograd, Russia
| | - Andrey Zaritskey
- Federal State Budgetary Institution “Federal Center of Heart, Blood and Endocrinology n.a. Almazov” of Ministry of Health of Russia, Saint Petersburg, Russia
| | | | - S. Alexeev
- Petrov Research Institute of Oncology, Saint Petersburg, Russia
| | - A. Loginov
- Haematology Centre at the Central City Hospital # 7, Yekaterinburg, Russia
| | - R. Orlova
- St. Petersburg Municipal Clinical Oncology Dispensary, Saint Petersburg, Russia
| | | | - Oleg Gladkov
- Chelyabinsk Regional Clinical Oncology Center, Chelyabinsk, Russia
| | - M. Kosinova
- Kemerovo Region Regional Clinical Hospital, Kemerovo, Russia
| | - O. Serduk
- Krasnodar Clinical Oncology Dispensary # 1, Krasnodar, Russia
| | - V. Milovanov
- Tambov Regional Clinical Oncology Dispensary, Tambov, Russia
| | - A. Myasnikov
- Republican Hospital named after V.A. Baranov, Petrozavodsk, Russia
| | | | | | - S. Patil
- Bangalore Institute of Oncology, Bangalore, India
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