KATRIN 实验中利用磁脉冲法降低存储粒子本底
仪器与探测器
2018-10-02 v1
摘要
KATRIN 实验旨在通过精密测量氚 β 谱在端点区域的形状，以 （90\% C.L.）的灵敏度确定有效电子中微子质量。衰变电子的能量分析由 MAC-E 滤谱仪实现。该装置中一个常见的本底来源是谱仪体积内短寿命同位素（如 Rn 与 Rn）的衰变。在 KATRIN 主谱仪上已实现并测试了主动与被动对策。其中之一是磁脉冲法，其利用现有的空气线圈系统在短时间尺度上降低谱仪中的磁导引场，以移除低能和高能存储电子。本文描述该方法的工作原理，并给出主谱仪调试测量的结果。使用粒子追踪软件 Kassiopeia 进行了模拟，以深入理解电子存储条件与移除过程。
引用
@article{arxiv.1805.01163,
title = {Reduction of stored-particle background by a magnetic pulse method at the KATRIN experiment},
author = {KATRIN Collaboration and M. Arenz and W. -J. Baek and S. Bauer and M. Beck and A. Beglarian and J. Behrens and R. Berendes and T. Bergmann and A. Berlev and U. Besserer and K. Blaum and T. Bode and B. Bornschein and L. Bornschein and T. Brunst and W. Buglak and N. Buzinsky and S. Chilingaryan and W. Q. Choi and M. Deffert and P. J. Doe and O. Dragoun and G. Drexlin and S. Dyba and F. Edzards and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and M. Erhard and D. Eversheim and M. Fedkevych and J. A. Formaggio and F. M. Fränkle and G. B. Franklin and F. Friedel and A. Fulst and D. Furse and W. Gil and F. Glück and A. Gonzalez Urena and S. Grohmann and R. Grössle and R. Gumbsheimer and M. Hackenjos and V. Hannen and F. Harms and N. Haußmann and F. Heizmann and K. Helbing and W. Herz and S. Hickford and D. Hilk and M. A. Howe and A. Huber and A. Jansen and J. Kellerer and N. Kernert and L. Kippenbrock and M. Kleesiek and M. Klein and A. Kopmann and M. Korzeczek and A. Kovalík and B. Krasch and M. Kraus and L. Kuckert and T. Lasserre and O. Lebeda and J. Letnev and A. Lokhov and M. Machatschek and A. Marsteller and E. L. Martin and S. Mertens and S. Mirz and B. Monreal and H. Neumann and S. Niemes and A. Off and A. Osipowicz and E. Otten and D. S. Parno and A. Pollithy and A. W. P. Poon and F. Priester and P. C. -O. Ranitzsch and O. Rest and R. G. H. Robertson and F. Roccati and C. Rodenbeck and M. Röllig and C. Röttele and M. Ryšavý and R. Sack and A. Saenz and L. Schimpf and K. Schlösser and M. Schlösser and K. Schönung and M. Schrank and H. Seitz-Moskaliuk and J. Sentkerestiová and V. Sibille and M. Slezák and M. Steidl and N. Steinbrink and M. Sturm and M. Suchopar and H. H. Telle and L. A. Thorne and T. Thümmler and N. Titov and I. Tkachev and N. Trost and K. Valerius and D. Vénos and R. Vianden and A. P. Vizcaya Hernández and N. Wandkowsky and M. Weber and C. Weinheimer and C. Weiss and S. Welte and J. Wendel and J. F. Wilkerson and J. Wolf and S. Wüstling and S. Zadoroghny},
journal= {arXiv preprint arXiv:1805.01163},
year = {2018}
}
备注
16 pages, 9 figures, 4 tables