Revolutionizing precision: Non-destructive detectors enable accurate half-life measurements of stored ions
Calibrated Schottky noise detection unlocks high-precision counting of highly charged heavy ions in storage rings
image: Non-destructive Schottky detectors are widely used in heavy-ion storage facilities worldwide for beam monitoring as well as precision mass spectrometry.
Credit: Xin-Liang Yan
A team of researchers at the Institute of Modern Physics, Chinese Academy of Sciences, has developed an innovative experimental method to calibrate the sensitivity of non-destructive Schottky detectors. This breakthrough, validated in experiments, enables precision lifetime measurements of highly charged ions in heavy ion storage rings under a broader range of experimental conditions.
Precision Ion Counting in Storage Rings
Schottky detectors are indispensable non-destructive beam monitors in heavy ion accelerators. However, their sensitivity varies across frequencies, posing challenges for reliable ion counting—critical for lifetime measurements via Schottky mass spectrometry. Traditionally, stabilizing revolution frequencies via electron cooling has been employed, but this approach is limited by frequency drifts and introduces beam loss mechanisms that distort lifetime measurements.
The new method addresses these limitations head-on by directly calibrating Schottky detector sensitivity in situ using low-energy electron-cooled beams. This advancement allows precision mass and lifetime measurements under unstable frequency conditions, expanding experimental versatility. “We aim to inspire future research and enhance capabilities at other heavy-ion facilities,” the team stated.
Robust Beam Intensity Monitoring
Even amidst frequency drifts, the calibrated method accurately determines stored ion intensity variations, providing reliable beam lifetime data. This innovation is particularly valuable for intensity-sensitive applications globally, as it leverages existing hardware, offering a practical solution for accelerator operators.
Transforming Precision Mass Spectrometry
By restoring peak shapes and improving central position determination, the calibrated spectra elevate mass spectrometry precision. This work charts a path for future storage ring facilities to simultaneously measure masses and decay lifetimes of rare isotopes. Enhanced peak detection performance ensures these facilities are equipped for cutting-edge scientific discovery from day one.
Conclusion:
This research represents a pivotal advancement in heavy ion storage ring technology, enhancing measurement precision and expanding experimental capabilities. By overcoming longstanding limitations, it accelerates scientific exploration of rare isotopes and their properties while enabling real-time accelerator monitoring. This advance in nuclear science and technological paved the way for next-generation discoveries.
The complete study is accessible via DOI: 10.1007/s41365-024-01614-y
Nuclear Science and Techniques (NST) is a peer-reviewed international journal sponsored by the Shanghai Institute of Applied Physics, Chinese Academy of Sciences. The journal publishes high-quality research across a broad range of nuclear science disciplines, including nuclear physics, nuclear energy, accelerator physics, and nuclear electronics. Its Editor-in-Chief is the renowned physicist, Professor Yu-Gang Ma.