Two Improvements to the Canadian Penning Trap System
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Authors
Letcher, Jeffrey J.
Issue Date
2003
Type
Thesis
Language
en_US
Keywords
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Abstract
The Canadian Penning Trap (CPT) is a high precision mass spectrometer
operating on-line at the Argonne Tandem Linac System (ATLAS). As part of a project to
modify and improve the CPT system, a quadrupole deflector was simulated and designed,
and the efficiency of the currently used Microchannel Plate (MCP) system was explored.
The quadrupole is a necessary component for flexible alteration of the ion beam line for
the future installment of the Advanced Penning Trap (APT). After modeling various
quadrupoles, a circular plus shim electrode combination was settled upon. While the
estimated voltages differ slightly from similar existing models, this design still functions
successfully. The MCP currently has an absolute efficiency of about 50% and it was felt
this could be improved. Through literary research it was determined that floating the
voltage of the MCP system was the most efficacious way to increase the efficiency of the
detector. Experiments to verify this are currently underway. It was also determined that
the addition of a grid in front of the MCP would most likely have little positive effect on
the efficiency of the system.
Description
45 p.
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License
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