4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

Crystals Orientation Measurements of the iThemba LABS Segmented Clover Detector.

5 Jul 2016, 11:50
20m
4A (Kramer Law building)

4A

Kramer Law building

UCT Middle Campus Cape Town
Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics (1)

Speaker

Ms Sinegugu Happiness Mthembu (iThemba LABS)

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

Hons

Abstract content <br> &nbsp; (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

Main supervisor (name and email)<br>and his / her institution

Dr Elena A. Lawrie, elena@tlabs.ac.za

Primary authors

Dr Elena Lawrie (iThemba LABS) Ms Sinegugu Happiness Mthembu (iThemba LABS) Dr Thifhelimbilu Daphney Bucher (iThemba LABS) Dr Tshepo Dinoko (iThemba Labs)

Co-authors

Mr Jayson Easton (iThemba LABS and University of the Western Cape) Mr Nicholas Erasmus (University of the Western Cape) Dr OBED SHIRINDA (iThemba LABS) Mr Sive Noncolela (UWC)

Presentation Materials

There are no materials yet.