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Electron Transport System for Fast-Timing-Readout at a Micro-Calorimeter Particle Detector


Spaniol,  Sebastian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Spaniol, S. (2018). Electron Transport System for Fast-Timing-Readout at a Micro-Calorimeter Particle Detector. Bachelor Thesis, Ruprecht-Karls-Universität, Heidelberg.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-A7D8-8
The micro-calorimeter particle detector MOCCA is dedicated for position- and massresolved
detection of neutral molecular fragments produced in electron–ion interactions
at the Cryogenic Storage Ring at the Max Planck Institute for Nuclear Physics in
Heidelberg. A feasibility study is performed for 3D fragment-imaging to determine the
kinetic energy released in the fragmentation. For this purpose, impact time measurement
on a ns scale will be necessary in addition to the position measurement and is planned to
be realized by fast-timing-readout of secondary electrons. Simulations of the employed
electrostatic electron transport system are presented in this thesis, qualitatively approving
the proposed concept. Within simulations at a realistic model of the electron transport
system, a narrow electron time-of-flight distribution was found with a width of 30 ps,
proving the expectation of conserved timing information of fragments by secondary
electrons. Assignment of timing information to its corresponding fragments was found to
be likely possible under restriction of minimum distance between impinged fragments in
the range of 3.64mm to 5.06mm, compared to the detection area of 44.8mm × 44.8mm.