Speaker
Apply to be<br> considered for a student <br> award (Yes / No)?
Yes
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
Hons
Main supervisor (name and email)<br>and his / her institution
Dr Elena A. Lawrie, elena@tlabs.ac.za
Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
The iThemba LABS segmented clover detector has four n-type hyper-pure germanium crystals, crystals A, B, C, and D, placed in a single cryostat [1]. The orientation of the germanium crystals inside the cryostat is investigated by measuring the T30, T60 and T90 rise-times. T30 refers to the time needed for the pulse to rise from 10% to 30% of its maximum amplitude [2]. The measurements were performed with a collimated 22Na source, where the axis of the collimator is perpendicular to the front face of the detector cryostat.
The rise-times were measured using the traces of events corresponding to the full energy deposition of the 511 keV gamma-rays. We observe an evidence for the presence of a symmetry of the T30, T60, and T90 rise-times with respect to the diagonal of the detector. In addition our measurements have indicated the precise position of the core in crystal A. This presentation will show the analysis of the data obtained in crystal A and discuss the results.
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
No
