The new Triple-Axis detector (TAD) uses a unique geometry and employs an improved electron multiplier design that will provide the user with several practical advantages. At a given operating gain, the new detector provides higher signal intensity by collecting more ions emerging from the quadrupole. Although signal is enhanced, neutral noise is substantially reduced through the off-axis design. Detector lifetime is also increased under proper operation.
This document provides a technical overview of the new Triple-Axis detector (TAD), which utilizes a unique geometry and an improved electron multiplier design. Key attributes include higher signal intensity at a given gain, substantially reduced neutral noise through an off-axis design, and increased detector lifetime under proper operation.
The guide offers specific operating advice to maximize performance and longevity. It recommends using Gain Normalized tuning methods and avoiding excessive electron multiplier voltages that could cause saturation or damage. The document also details the use of the EM Saver function for Selected-Ion Monitoring (SIM) to protect against high ion currents.
The TAD must be stored in a desiccator under dry nitrogen or argon.
The detector is essentially saturated near 8 million counts.