# A room-temperature ion trapping apparatus with hydrogen partial pressure below $10^{-11}$ mBar

## TL;DR

This paper presents a room-temperature ion trapping setup achieving extremely low hydrogen partial pressure below 10^{-11} mBar, significantly reducing ion loss and enhancing potential scalability for quantum applications.

## Contribution

The authors developed a novel ion trapping apparatus with ultra-low hydrogen partial pressure, demonstrating improved vacuum conditions for scalable ion trapping.

## Key findings

- Hydrogen partial pressure achieved below 10^{-11} mBar.
- Reduced ion reaction rates with hydrogen contaminants.
- Enhanced ion trap lifetime potential.

## Abstract

The lifetime of trapped ion ensembles corresponds to a crucial parameter determining the potential scalability of their prospective applications and is often limited by the achievable vacuum level in the apparatus. We report on the realization of a room-temperature $^{40}{\rm Ca}^{+}$ ion trapping vacuum apparatus with unprecedentedly low reaction rates of ions with a dominant vacuum contaminant: hydrogen. We present our trap assembly procedures and hydrogen pressure characterization by analysis of the CaH$^+$ molecule formation rate.