Abstract
We designed and fabricated a thimble type ionization chamber with the guard-ring electrode. During the measurement, the potential between the guard electrode and the collecting electrode can be drifted, which will change the active volume of the ionization chamber. From MAXWELL and Garfield calculation, the variation of the active volume of the ionization chamber was obtained with changing the potential difference between the collector and guard electrode. We made ionization chambers with two designs of the guard ring. The polarity effect of two ion chamber was measured, and the result of it shows the consistency with the simulation.
| Original language | English |
|---|---|
| Pages (from-to) | 520-522 |
| Number of pages | 3 |
| Journal | IEEE Nuclear Science Symposium Conference Record |
| Volume | 1 |
| Publication status | Published - 2004 |
| Event | 2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy Duration: 2004 Oct 16 → 2004 Oct 22 |
All Science Journal Classification (ASJC) codes
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging