Commissioning of the vacuum system of the KATRIN main spectrometer

M. Arenz, M. Babutzka, M. Bahr, J. P. Barrett, S. Bauer, M. Beck, A. Beglarian, J. Behrens, T. Bergmann, U. Besserer, J. Blümer, L. I. Bodine, K. Bokeloh, J. Bonn, B. Bornschein, L. Bornschein, S. Büsch, T. H. Burritt, S. Chilingaryan, T. J. Corona & 130 others Luiz de Viveiros, P. J. Doe, O. Dragoun, G. Drexlin, S. Dyba, S. Ebenhöch, K. Eitel, E. Ellinger, S. Enomoto, M. Erhard, D. Eversheim, M. Fedkevych, A. Felden, S. Fischer, J. A. Formaggio, F. Fränkle, D. Furse, M. Ghilea, W. Gil, F. Glück, A. Gonzalez Ureña, S. Görhardt, S. Groh, S. Grohmann, R. Grössle, R. Gumbsheimer, M. Hackenjos, V. Hannen, F. Harms, N. Haußmann, F. Heizmann, K. Helbing, W. Herz, S. Hickford, D. Hilk, B. Hillen, T. Höhn, B. Holzapfel, M. Hötzel, M. A. Howe, A. Huber, A. Jansen, N. Kernert, L. Kippenbrock, M. Kleesiek, M. Klein, A. Kopmann, A. Kosmider, A. Kovalík, B. Krasch, M. Kraus, H. Krause, M. Krause, L. Kuckert, B. Ku ner, L. La Cascio, O. Lebeda, B. Leiber, J. Letnev, V. M. Lobashev, A. Lokhov, E. Malcherek, M. Mark, E. L. Martin, S. Mertens, S. Mirz, B. Monreal, K. Müller, M. Neuberger, H. Neumann, S. Niemes, M. Noe, N. S. Oblath, A. Oa, H. W. Ortjohann, A. Osipowicz, E. Otten, D. S. Parno, P. Plischke, A. W.P. Poon, M. Prall, F. Priester, P. C.O. Ranitzsch, J. Reich, O. Rest, R. G.H. Robertson, M. Röllig, S. Rosendahl, S. Rupp, M. Ryšavý, K. Schlösser, M. Schlösser, K. Schönung, M. Schrank, J. Schwarz, W. Seiler, H. Seitz-Moskaliuk, J. Sentkerestiová, A. Skasyrskaya, M. Slezák, A. Špalek, M. Steidl, N. Steinbrink, M. Sturm, M. Suesser, H. H. Telle, T. Thümmler, N. Titov, I. Tkachev, N. Trost, A. Unru, K. Valerius, D. Vénos, R. Vianden, S. Vöcking, B. L. Wall, N. Wandkowsky, M. Weber, C. Weinheimer, C. Weiss, S. Welte, J. Wendel, K. L. Wierman, J. F. Wilkerson, D. Winzen, J. Wolf, S. Wüstling, M. Zacher, S. Zadoroghny, M. Zbo il

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The KATRIN experiment will probe the neutrino mass by measuring the β-electron energy spectrum near the endpoint of tritium β-decay. An integral energy analysis will be performed by an electro-static spectrometer (“Main Spectrometer”), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m3, and a complex inner electrode system with about 120 000 individual parts. The strong magnetic field that guides the β-electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 10−11 mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016.

Original languageEnglish (US)
Article numberP04011
JournalJournal of Instrumentation
Volume11
Issue number4
DOIs
StatePublished - Jan 1 2016

Fingerprint

Commissioning
vacuum systems
Spectrometer
Spectrometers
Vacuum
molecular pumps
spectrometers
Vacuum gages
Pump
Pumps
vacuum gages
Electrons
Electron
Solenoids
Ultrahigh vacuum
Tritium
Energy Integral
solenoids
tritium
Solenoid

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mathematical Physics

Cite this

Arenz, M., Babutzka, M., Bahr, M., Barrett, J. P., Bauer, S., Beck, M., ... Zbo il, M. (2016). Commissioning of the vacuum system of the KATRIN main spectrometer. Journal of Instrumentation, 11(4), [P04011]. https://doi.org/10.1088/1748-0221/11/04/P04011
Arenz, M. ; Babutzka, M. ; Bahr, M. ; Barrett, J. P. ; Bauer, S. ; Beck, M. ; Beglarian, A. ; Behrens, J. ; Bergmann, T. ; Besserer, U. ; Blümer, J. ; Bodine, L. I. ; Bokeloh, K. ; Bonn, J. ; Bornschein, B. ; Bornschein, L. ; Büsch, S. ; Burritt, T. H. ; Chilingaryan, S. ; Corona, T. J. ; de Viveiros, Luiz ; Doe, P. J. ; Dragoun, O. ; Drexlin, G. ; Dyba, S. ; Ebenhöch, S. ; Eitel, K. ; Ellinger, E. ; Enomoto, S. ; Erhard, M. ; Eversheim, D. ; Fedkevych, M. ; Felden, A. ; Fischer, S. ; Formaggio, J. A. ; Fränkle, F. ; Furse, D. ; Ghilea, M. ; Gil, W. ; Glück, F. ; Gonzalez Ureña, A. ; Görhardt, S. ; Groh, S. ; Grohmann, S. ; Grössle, R. ; Gumbsheimer, R. ; Hackenjos, M. ; Hannen, V. ; Harms, F. ; Haußmann, N. ; Heizmann, F. ; Helbing, K. ; Herz, W. ; Hickford, S. ; Hilk, D. ; Hillen, B. ; Höhn, T. ; Holzapfel, B. ; Hötzel, M. ; Howe, M. A. ; Huber, A. ; Jansen, A. ; Kernert, N. ; Kippenbrock, L. ; Kleesiek, M. ; Klein, M. ; Kopmann, A. ; Kosmider, A. ; Kovalík, A. ; Krasch, B. ; Kraus, M. ; Krause, H. ; Krause, M. ; Kuckert, L. ; Ku ner, B. ; La Cascio, L. ; Lebeda, O. ; Leiber, B. ; Letnev, J. ; Lobashev, V. M. ; Lokhov, A. ; Malcherek, E. ; Mark, M. ; Martin, E. L. ; Mertens, S. ; Mirz, S. ; Monreal, B. ; Müller, K. ; Neuberger, M. ; Neumann, H. ; Niemes, S. ; Noe, M. ; Oblath, N. S. ; Oa, A. ; Ortjohann, H. W. ; Osipowicz, A. ; Otten, E. ; Parno, D. S. ; Plischke, P. ; Poon, A. W.P. ; Prall, M. ; Priester, F. ; Ranitzsch, P. C.O. ; Reich, J. ; Rest, O. ; Robertson, R. G.H. ; Röllig, M. ; Rosendahl, S. ; Rupp, S. ; Ryšavý, M. ; Schlösser, K. ; Schlösser, M. ; Schönung, K. ; Schrank, M. ; Schwarz, J. ; Seiler, W. ; Seitz-Moskaliuk, H. ; Sentkerestiová, J. ; Skasyrskaya, A. ; Slezák, M. ; Špalek, A. ; Steidl, M. ; Steinbrink, N. ; Sturm, M. ; Suesser, M. ; Telle, H. H. ; Thümmler, T. ; Titov, N. ; Tkachev, I. ; Trost, N. ; Unru, A. ; Valerius, K. ; Vénos, D. ; Vianden, R. ; Vöcking, S. ; Wall, B. L. ; Wandkowsky, N. ; Weber, M. ; Weinheimer, C. ; Weiss, C. ; Welte, S. ; Wendel, J. ; Wierman, K. L. ; Wilkerson, J. F. ; Winzen, D. ; Wolf, J. ; Wüstling, S. ; Zacher, M. ; Zadoroghny, S. ; Zbo il, M. / Commissioning of the vacuum system of the KATRIN main spectrometer. In: Journal of Instrumentation. 2016 ; Vol. 11, No. 4.
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title = "Commissioning of the vacuum system of the KATRIN main spectrometer",
abstract = "The KATRIN experiment will probe the neutrino mass by measuring the β-electron energy spectrum near the endpoint of tritium β-decay. An integral energy analysis will be performed by an electro-static spectrometer (“Main Spectrometer”), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m3, and a complex inner electrode system with about 120 000 individual parts. The strong magnetic field that guides the β-electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300◦C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 10−11 mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016.",
author = "M. Arenz and M. Babutzka and M. Bahr and Barrett, {J. P.} and S. Bauer and M. Beck and A. Beglarian and J. Behrens and T. Bergmann and U. Besserer and J. Bl{\"u}mer and Bodine, {L. I.} and K. Bokeloh and J. Bonn and B. Bornschein and L. Bornschein and S. B{\"u}sch and Burritt, {T. H.} and S. Chilingaryan and Corona, {T. J.} and {de Viveiros}, Luiz and Doe, {P. J.} and O. Dragoun and G. Drexlin and S. Dyba and S. Ebenh{\"o}ch and K. Eitel and E. Ellinger and S. Enomoto and M. Erhard and D. Eversheim and M. Fedkevych and A. Felden and S. Fischer and Formaggio, {J. A.} and F. Fr{\"a}nkle and D. Furse and M. Ghilea and W. Gil and F. Gl{\"u}ck and {Gonzalez Ure{\~n}a}, A. and S. G{\"o}rhardt and S. Groh and S. Grohmann and R. Gr{\"o}ssle and R. Gumbsheimer and M. Hackenjos and V. Hannen and F. Harms and N. Hau{\ss}mann and F. Heizmann and K. Helbing and W. Herz and S. Hickford and D. Hilk and B. Hillen and T. H{\"o}hn and B. Holzapfel and M. H{\"o}tzel and Howe, {M. A.} and A. Huber and A. Jansen and N. Kernert and L. Kippenbrock and M. Kleesiek and M. Klein and A. Kopmann and A. Kosmider and A. Koval{\'i}k and B. Krasch and M. Kraus and H. Krause and M. Krause and L. Kuckert and {Ku ner}, B. and {La Cascio}, L. and O. Lebeda and B. Leiber and J. Letnev and Lobashev, {V. M.} and A. Lokhov and E. Malcherek and M. Mark and Martin, {E. L.} and S. Mertens and S. Mirz and B. Monreal and K. M{\"u}ller and M. Neuberger and H. Neumann and S. Niemes and M. Noe and Oblath, {N. S.} and A. Oa and Ortjohann, {H. W.} and A. Osipowicz and E. Otten and Parno, {D. S.} and P. Plischke and Poon, {A. W.P.} and M. Prall and F. Priester and Ranitzsch, {P. C.O.} and J. Reich and O. Rest and Robertson, {R. G.H.} and M. R{\"o}llig and S. Rosendahl and S. Rupp and M. Ryšav{\'y} and K. Schl{\"o}sser and M. Schl{\"o}sser and K. Sch{\"o}nung and M. Schrank and J. Schwarz and W. Seiler and H. Seitz-Moskaliuk and J. Sentkerestiov{\'a} and A. Skasyrskaya and M. Slez{\'a}k and A. Špalek and M. Steidl and N. Steinbrink and M. Sturm and M. Suesser and Telle, {H. H.} and T. Th{\"u}mmler and N. Titov and I. Tkachev and N. Trost and A. Unru and K. Valerius and D. V{\'e}nos and R. Vianden and S. V{\"o}cking and Wall, {B. L.} and N. Wandkowsky and M. Weber and C. Weinheimer and C. Weiss and S. Welte and J. Wendel and Wierman, {K. L.} and Wilkerson, {J. F.} and D. Winzen and J. Wolf and S. W{\"u}stling and M. Zacher and S. Zadoroghny and {Zbo il}, M.",
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Arenz, M, Babutzka, M, Bahr, M, Barrett, JP, Bauer, S, Beck, M, Beglarian, A, Behrens, J, Bergmann, T, Besserer, U, Blümer, J, Bodine, LI, Bokeloh, K, Bonn, J, Bornschein, B, Bornschein, L, Büsch, S, Burritt, TH, Chilingaryan, S, Corona, TJ, de Viveiros, L, Doe, PJ, Dragoun, O, Drexlin, G, Dyba, S, Ebenhöch, S, Eitel, K, Ellinger, E, Enomoto, S, Erhard, M, Eversheim, D, Fedkevych, M, Felden, A, Fischer, S, Formaggio, JA, Fränkle, F, Furse, D, Ghilea, M, Gil, W, Glück, F, Gonzalez Ureña, A, Görhardt, S, Groh, S, Grohmann, S, Grössle, R, Gumbsheimer, R, Hackenjos, M, Hannen, V, Harms, F, Haußmann, N, Heizmann, F, Helbing, K, Herz, W, Hickford, S, Hilk, D, Hillen, B, Höhn, T, Holzapfel, B, Hötzel, M, Howe, MA, Huber, A, Jansen, A, Kernert, N, Kippenbrock, L, Kleesiek, M, Klein, M, Kopmann, A, Kosmider, A, Kovalík, A, Krasch, B, Kraus, M, Krause, H, Krause, M, Kuckert, L, Ku ner, B, La Cascio, L, Lebeda, O, Leiber, B, Letnev, J, Lobashev, VM, Lokhov, A, Malcherek, E, Mark, M, Martin, EL, Mertens, S, Mirz, S, Monreal, B, Müller, K, Neuberger, M, Neumann, H, Niemes, S, Noe, M, Oblath, NS, Oa, A, Ortjohann, HW, Osipowicz, A, Otten, E, Parno, DS, Plischke, P, Poon, AWP, Prall, M, Priester, F, Ranitzsch, PCO, Reich, J, Rest, O, Robertson, RGH, Röllig, M, Rosendahl, S, Rupp, S, Ryšavý, M, Schlösser, K, Schlösser, M, Schönung, K, Schrank, M, Schwarz, J, Seiler, W, Seitz-Moskaliuk, H, Sentkerestiová, J, Skasyrskaya, A, Slezák, M, Špalek, A, Steidl, M, Steinbrink, N, Sturm, M, Suesser, M, Telle, HH, Thümmler, T, Titov, N, Tkachev, I, Trost, N, Unru, A, Valerius, K, Vénos, D, Vianden, R, Vöcking, S, Wall, BL, Wandkowsky, N, Weber, M, Weinheimer, C, Weiss, C, Welte, S, Wendel, J, Wierman, KL, Wilkerson, JF, Winzen, D, Wolf, J, Wüstling, S, Zacher, M, Zadoroghny, S & Zbo il, M 2016, 'Commissioning of the vacuum system of the KATRIN main spectrometer', Journal of Instrumentation, vol. 11, no. 4, P04011. https://doi.org/10.1088/1748-0221/11/04/P04011

Commissioning of the vacuum system of the KATRIN main spectrometer. / Arenz, M.; Babutzka, M.; Bahr, M.; Barrett, J. P.; Bauer, S.; Beck, M.; Beglarian, A.; Behrens, J.; Bergmann, T.; Besserer, U.; Blümer, J.; Bodine, L. I.; Bokeloh, K.; Bonn, J.; Bornschein, B.; Bornschein, L.; Büsch, S.; Burritt, T. H.; Chilingaryan, S.; Corona, T. J.; de Viveiros, Luiz; Doe, P. J.; Dragoun, O.; Drexlin, G.; Dyba, S.; Ebenhöch, S.; Eitel, K.; Ellinger, E.; Enomoto, S.; Erhard, M.; Eversheim, D.; Fedkevych, M.; Felden, A.; Fischer, S.; Formaggio, J. A.; Fränkle, F.; Furse, D.; Ghilea, M.; Gil, W.; Glück, F.; Gonzalez Ureña, A.; Görhardt, S.; Groh, S.; Grohmann, S.; Grössle, R.; Gumbsheimer, R.; Hackenjos, M.; Hannen, V.; Harms, F.; Haußmann, N.; Heizmann, F.; Helbing, K.; Herz, W.; Hickford, S.; Hilk, D.; Hillen, B.; Höhn, T.; Holzapfel, B.; Hötzel, M.; Howe, M. A.; Huber, A.; Jansen, A.; Kernert, N.; Kippenbrock, L.; Kleesiek, M.; Klein, M.; Kopmann, A.; Kosmider, A.; Kovalík, A.; Krasch, B.; Kraus, M.; Krause, H.; Krause, M.; Kuckert, L.; Ku ner, B.; La Cascio, L.; Lebeda, O.; Leiber, B.; Letnev, J.; Lobashev, V. M.; Lokhov, A.; Malcherek, E.; Mark, M.; Martin, E. L.; Mertens, S.; Mirz, S.; Monreal, B.; Müller, K.; Neuberger, M.; Neumann, H.; Niemes, S.; Noe, M.; Oblath, N. S.; Oa, A.; Ortjohann, H. W.; Osipowicz, A.; Otten, E.; Parno, D. S.; Plischke, P.; Poon, A. W.P.; Prall, M.; Priester, F.; Ranitzsch, P. C.O.; Reich, J.; Rest, O.; Robertson, R. G.H.; Röllig, M.; Rosendahl, S.; Rupp, S.; Ryšavý, M.; Schlösser, K.; Schlösser, M.; Schönung, K.; Schrank, M.; Schwarz, J.; Seiler, W.; Seitz-Moskaliuk, H.; Sentkerestiová, J.; Skasyrskaya, A.; Slezák, M.; Špalek, A.; Steidl, M.; Steinbrink, N.; Sturm, M.; Suesser, M.; Telle, H. H.; Thümmler, T.; Titov, N.; Tkachev, I.; Trost, N.; Unru, A.; Valerius, K.; Vénos, D.; Vianden, R.; Vöcking, S.; Wall, B. L.; Wandkowsky, N.; Weber, M.; Weinheimer, C.; Weiss, C.; Welte, S.; Wendel, J.; Wierman, K. L.; Wilkerson, J. F.; Winzen, D.; Wolf, J.; Wüstling, S.; Zacher, M.; Zadoroghny, S.; Zbo il, M.

In: Journal of Instrumentation, Vol. 11, No. 4, P04011, 01.01.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Commissioning of the vacuum system of the KATRIN main spectrometer

AU - Arenz, M.

AU - Babutzka, M.

AU - Bahr, M.

AU - Barrett, J. P.

AU - Bauer, S.

AU - Beck, M.

AU - Beglarian, A.

AU - Behrens, J.

AU - Bergmann, T.

AU - Besserer, U.

AU - Blümer, J.

AU - Bodine, L. I.

AU - Bokeloh, K.

AU - Bonn, J.

AU - Bornschein, B.

AU - Bornschein, L.

AU - Büsch, S.

AU - Burritt, T. H.

AU - Chilingaryan, S.

AU - Corona, T. J.

AU - de Viveiros, Luiz

AU - Doe, P. J.

AU - Dragoun, O.

AU - Drexlin, G.

AU - Dyba, S.

AU - Ebenhöch, S.

AU - Eitel, K.

AU - Ellinger, E.

AU - Enomoto, S.

AU - Erhard, M.

AU - Eversheim, D.

AU - Fedkevych, M.

AU - Felden, A.

AU - Fischer, S.

AU - Formaggio, J. A.

AU - Fränkle, F.

AU - Furse, D.

AU - Ghilea, M.

AU - Gil, W.

AU - Glück, F.

AU - Gonzalez Ureña, A.

AU - Görhardt, S.

AU - Groh, S.

AU - Grohmann, S.

AU - Grössle, R.

AU - Gumbsheimer, R.

AU - Hackenjos, M.

AU - Hannen, V.

AU - Harms, F.

AU - Haußmann, N.

AU - Heizmann, F.

AU - Helbing, K.

AU - Herz, W.

AU - Hickford, S.

AU - Hilk, D.

AU - Hillen, B.

AU - Höhn, T.

AU - Holzapfel, B.

AU - Hötzel, M.

AU - Howe, M. A.

AU - Huber, A.

AU - Jansen, A.

AU - Kernert, N.

AU - Kippenbrock, L.

AU - Kleesiek, M.

AU - Klein, M.

AU - Kopmann, A.

AU - Kosmider, A.

AU - Kovalík, A.

AU - Krasch, B.

AU - Kraus, M.

AU - Krause, H.

AU - Krause, M.

AU - Kuckert, L.

AU - Ku ner, B.

AU - La Cascio, L.

AU - Lebeda, O.

AU - Leiber, B.

AU - Letnev, J.

AU - Lobashev, V. M.

AU - Lokhov, A.

AU - Malcherek, E.

AU - Mark, M.

AU - Martin, E. L.

AU - Mertens, S.

AU - Mirz, S.

AU - Monreal, B.

AU - Müller, K.

AU - Neuberger, M.

AU - Neumann, H.

AU - Niemes, S.

AU - Noe, M.

AU - Oblath, N. S.

AU - Oa, A.

AU - Ortjohann, H. W.

AU - Osipowicz, A.

AU - Otten, E.

AU - Parno, D. S.

AU - Plischke, P.

AU - Poon, A. W.P.

AU - Prall, M.

AU - Priester, F.

AU - Ranitzsch, P. C.O.

AU - Reich, J.

AU - Rest, O.

AU - Robertson, R. G.H.

AU - Röllig, M.

AU - Rosendahl, S.

AU - Rupp, S.

AU - Ryšavý, M.

AU - Schlösser, K.

AU - Schlösser, M.

AU - Schönung, K.

AU - Schrank, M.

AU - Schwarz, J.

AU - Seiler, W.

AU - Seitz-Moskaliuk, H.

AU - Sentkerestiová, J.

AU - Skasyrskaya, A.

AU - Slezák, M.

AU - Špalek, A.

AU - Steidl, M.

AU - Steinbrink, N.

AU - Sturm, M.

AU - Suesser, M.

AU - Telle, H. H.

AU - Thümmler, T.

AU - Titov, N.

AU - Tkachev, I.

AU - Trost, N.

AU - Unru, A.

AU - Valerius, K.

AU - Vénos, D.

AU - Vianden, R.

AU - Vöcking, S.

AU - Wall, B. L.

AU - Wandkowsky, N.

AU - Weber, M.

AU - Weinheimer, C.

AU - Weiss, C.

AU - Welte, S.

AU - Wendel, J.

AU - Wierman, K. L.

AU - Wilkerson, J. F.

AU - Winzen, D.

AU - Wolf, J.

AU - Wüstling, S.

AU - Zacher, M.

AU - Zadoroghny, S.

AU - Zbo il, M.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The KATRIN experiment will probe the neutrino mass by measuring the β-electron energy spectrum near the endpoint of tritium β-decay. An integral energy analysis will be performed by an electro-static spectrometer (“Main Spectrometer”), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m3, and a complex inner electrode system with about 120 000 individual parts. The strong magnetic field that guides the β-electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300◦C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 10−11 mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016.

AB - The KATRIN experiment will probe the neutrino mass by measuring the β-electron energy spectrum near the endpoint of tritium β-decay. An integral energy analysis will be performed by an electro-static spectrometer (“Main Spectrometer”), an ultra-high vacuum vessel with a length of 23.2 m, a volume of 1240 m3, and a complex inner electrode system with about 120 000 individual parts. The strong magnetic field that guides the β-electrons is provided by super-conducting solenoids at both ends of the spectrometer. Its influence on turbo-molecular pumps and vacuum gauges had to be considered. A system consisting of 6 turbo-molecular pumps and 3 km of non-evaporable getter strips has been deployed and was tested during the commissioning of the spectrometer. In this paper the configuration, the commissioning with bake-out at 300◦C, and the performance of this system are presented in detail. The vacuum system has to maintain a pressure in the 10−11 mbar range. It is demonstrated that the performance of the system is already close to these stringent functional requirements for the KATRIN experiment, which will start at the end of 2016.

UR - http://www.scopus.com/inward/record.url?scp=85040531077&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040531077&partnerID=8YFLogxK

U2 - 10.1088/1748-0221/11/04/P04011

DO - 10.1088/1748-0221/11/04/P04011

M3 - Article

VL - 11

JO - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

IS - 4

M1 - P04011

ER -

Arenz M, Babutzka M, Bahr M, Barrett JP, Bauer S, Beck M et al. Commissioning of the vacuum system of the KATRIN main spectrometer. Journal of Instrumentation. 2016 Jan 1;11(4). P04011. https://doi.org/10.1088/1748-0221/11/04/P04011