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The vacuum system for the Munich fission fragment accelerator

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Title: The vacuum system for the Munich fission fragment accelerator
Authors: Maier-Komor, P.1 peter.maier-komor@ph.tum.de, Faestermann, T.1, Krücken, R.1, Nebel, F.1, Winkler, S.1, Groß, M.2, Habs, D.2, Kester, O.2, Szerypo, J.2, Thirolf, P.G.2
Source: Nuclear Instruments & Methods in Physics Research Section A. May2006, Vol. 561 Issue 1, p66-75. 10p.
Subjects: Ion bombardment, Pumping machinery, Vacuum, Irradiation
Abstract: Abstract: The Munich Accelerator for Fission Fragments (MAFF) is a radioactive ion beam facility which will be installed at the new research reactor FRM-II. This new reactor became critical in Spring 2004. The heart of MAFF, the target-ion source unit will be placed in the through-going beam tube of the FRM-II. This beam tube has been installed, tested and filled with helium in 2001. The cogent authorization procedures and safety levels developed for nuclear power plants are applied for this research reactor also. Therefore, MAFF also has to obey these very strict rules, because the typical 1g load of 235U in the MAFF source creates a fission product activity of several 1014 Bq after one reactor cycle of 52 days. All vacuum components must withstand a pressure of 6×105 Pa in addition to their UHV acceptability. Even dynamic gaskets must be strictly metallic, because organic compounds would not withstand the radioactive irradiation during the design lifetime of 30 years. Only dry vacuum pumps are suitable: refrigerator cryopumps for the high-vacuum part and five stages of roots pumps for roughing and regeneration. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 20749112
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: The vacuum system for the Munich fission fragment accelerator
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  Data: <searchLink fieldCode="AR" term="%22Maier-Komor%2C+P%2E%22">Maier-Komor, P.</searchLink><relatesTo>1</relatesTo><i> peter.maier-komor@ph.tum.de</i><br /><searchLink fieldCode="AR" term="%22Faestermann%2C+T%2E%22">Faestermann, T.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Krücken%2C+R%2E%22">Krücken, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nebel%2C+F%2E%22">Nebel, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Winkler%2C+S%2E%22">Winkler, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Groß%2C+M%2E%22">Groß, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Habs%2C+D%2E%22">Habs, D.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Kester%2C+O%2E%22">Kester, O.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Szerypo%2C+J%2E%22">Szerypo, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Thirolf%2C+P%2EG%2E%22">Thirolf, P.G.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. May2006, Vol. 561 Issue 1, p66-75. 10p.
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  Data: Abstract: The Munich Accelerator for Fission Fragments (MAFF) is a radioactive ion beam facility which will be installed at the new research reactor FRM-II. This new reactor became critical in Spring 2004. The heart of MAFF, the target-ion source unit will be placed in the through-going beam tube of the FRM-II. This beam tube has been installed, tested and filled with helium in 2001. The cogent authorization procedures and safety levels developed for nuclear power plants are applied for this research reactor also. Therefore, MAFF also has to obey these very strict rules, because the typical 1g load of 235U in the MAFF source creates a fission product activity of several 1014 Bq after one reactor cycle of 52 days. All vacuum components must withstand a pressure of 6×105 Pa in addition to their UHV acceptability. Even dynamic gaskets must be strictly metallic, because organic compounds would not withstand the radioactive irradiation during the design lifetime of 30 years. Only dry vacuum pumps are suitable: refrigerator cryopumps for the high-vacuum part and five stages of roots pumps for roughing and regeneration. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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