| Issue |
EPJ Web Conf.
Volume 368, 2026
9th Heavy Ion Accelerator Symposium (HIAS 2025)
|
|
|---|---|---|
| Article Number | 00010 | |
| Number of page(s) | 3 | |
| DOI | https://doi.org/10.1051/epjconf/202636800010 | |
| Published online | 13 May 2026 | |
https://doi.org/10.1051/epjconf/202636800010
Towards improving spatial and energy resolution in gaseous detectors with negative ion drift
1 Department of Nuclear Physics and Accelerator Applications, Research School of Physics, The Australian National University, Canberra, 2601, ACT, Australia
2 ARC Centre of Excellence for Dark Matter Particle Physics, Australia
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 13 May 2026
Abstract
Negative ion drift is a technique to minimise diffusion in gaseous detectors by drifting negative ions in lieu of electrons. Electronegative gases are typically used as a method to form negative ions. However, these gases present technical challenges to achieve high gain, preventing widespread adoption. This work leverages an alternative electron attachment approach, Dissociative Electron Attachment, which may produce negative ions in situ from conventional molecular gas species. The method, demonstrated in this work using CF4, successfully converts the electron signal to negative ions. Our measurements provide new insights into the attachment and detachment processes within gaseous detectors.
Current address: Centre for Accelerator Science, Australian Nuclear Science and Technology Organisation, Sydney, NSW, 2234, Australia
© The Authors, published by EDP Sciences, 2026
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