THE EXOGAM2 CALIBRATION USING THE NEWLY DEVELOPED NUMEXO2 DIGITAL ELECTRONIC

Abstract

In this study, the calibration process of the EXOGAM2 conventional gamma detector system with the newly developed digital electronic device, namely NUMEXO2, will be presented. This experimental study was performed at the GANIL (Grand Accélérateur National d'Ions Lourds) nuclear research center in France. The energy calibration of the EXOGAM2 detector system with the newly developed NUMEXO2 digital electronic device was conducted using both low and high gamma energy levels of a 152Eu radioactive source. This calibration was carried out for two EXOGAM2 detectors, and the energy resolution of each crystal in the EXOGAM2 system was determined. The energy resolution of each crystal was found to be reasonable energy resolution values of the EXOGAM2 detectors. Therefore, the use of the digital electronic device NUMEXO2 did not affect the energy resolution of the detectors, but it did enable us to acquire data at a high counting rate.

Keywords

• EXOGAM2
• NUMEXO2
• digital electronic
• calibration

References

1. FJ Egea Canet et al. A new front-end high-resolution sampling board for the new generation electronics of EXOGAM2 and NEDA detectors. IEEE Transactions on Nuclear Science, 62(3):1056–1062, 2015.
2. G. de France. Exogam detectors. [Online]. Available: http://pro.ganilspiral2. eu/laboratory/detectors/exogam/exogam-detectors.
3. G De Angelis, A Bracco, and D Curien. The EUROBALL gamma ray detector array. Europhysics news, 34(5):181–185, 2003.
4. FS Goulding, DA Landis, N Madden, M Maier, and H Yaver. Gammasphere. Overview of detector and signal processing system. In Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE, volume 1, pages 432–436. IEEE, 1995.
5. J Eberth, G Pascovici, HG Thomas, N Warr, D Weißhaar, D Habs, P Reiter, P Thirolf, D Schwalm, C Gund, et al. Miniball: A gamma-ray spectrometer with position sensitive ge detectors for nuclear structure studies at rex-isolde. In AIP Conference Proceedings, volume 656, pages 349–356. AIP, 2003.
6. S Akkoyun, Alejandro Algora, B Alikhani, F Ameil, G De Angelis, L Arnold, A Astier, Ayse Atac¸, Y Aubert, C Aufranc, et al. Agata advanced gamma tracking array. Nuclear Instruments and Methods in Physics Research Section A: Accelerators,Spectrometers, Detectors and Associated Equipment, 668:26–58, 2012.
7. CW Beausang. Greta: the gamma-ray energy-tracking array. status of the development and physics opportunities. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 204:666–670, 2003.
8. PT Greenlees. on behalf of the jurogam and great collabs. Nucl. Phys. A, 787:507c, 2007.

9. DG Sarantites, W Reviol, CJ Chiara, RJ Charity, LG Sobotka, M Devlin, M Furlotti, OL Pechenaya, J Elson, P Hausladen, et al. Neutron shell: a high efficiency array of neutron detectors for gamma-ray spectroscopic studies with gammasphere. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 530(3):473–492, 2004.
10. J. Nyberg. Neutron wall. [Online]. Available: http://egpworkshop.in2p3.fr/docs/Talks-Mardi/nwall-jn.pdf., 27-30 May 2008.
11. O Skeppstedt, HA Roth, L Lindstr¨om, R Wadsworth, I Hibbert, N Kelsall, D Jenkins, H Grawe, M G´orska, M Moszynski, et al. The EUROBALL neutron wall–design and performance tests of neutron detectors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 421(3):531–541, 1999.
12. J.J. Valiente-Dobon. Neda - neutron detector array. [Online]. Available: http://www.mi.infn.it/WSBormio-Milano2012/Doc/TALK/Dobon-Bormio12-web.pdf., 22-25 February 2012.
13. G Jaworski, M Palacz, Johan Nyberg, G De Angelis, G De France, A Di Nitto, J Egea, MN Erduran, S Ertürk, E Farnea, et al. Monte carlo simulation of a single detector unit for the neutron detector array NEDA. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 673:64–72, 2012.
14. BM Nyako et al. Performance of the diamant detector at ganil and plans for improvements.ATOMKI laboratory: for the DIAMANT collaboration,(unpublished), 2007.
15. RD Baertsch and RN Hall. Gamma ray detectors made from high purity germanium. IEEE Transactions on Nuclear Science, 17(3):235–240, 1970.
16. WL Hansen. High-purity germanium crystal growing. Nuclear Instruments and Methods, 94(2):377–380, 1971.
17. J Llacer. Planar and coaxial high purity germanium radiation detectors. Nuclear Instruments and Methods, 98(2):259–268, 1972.
18. F Azaiez. Exogam: gamma ray spectrometer for radioactive beams. Nuclear Physics A, 654(1):1003c–1008c, 1999.
19. J Simpson, F Azaiez, G De France, J Fouan, J Gerl, R Julin, W Korten, PJ Nolan, BM Nyako, G Sletten, et al. The exogam array: a radioactive beam gamma-ray spectrometer. Acta Physica Hungarica, New Series, Heavy Ion Physics, 11:159–188, 2000.
20. Glenn F Knoll. Radiation detection and measurement. John Wiley & Sons, 2010.
21. FJ Egea Canet et al. A new front-end high-resolution sampling board for the new generation electronics of EXOGAM2 and NEDA detectors. IEEE Transactions on Nuclear Science, 62(3):1056–1062, 2015.
22. M Tripon. EXOGAM2 technical specifications, 2012.
23. Şahin Elif, “Adaptation Of Digital Electronic Into Detector Systems NUMEXO2 In Exotic Nuclei Research”, Master Thesis, İzmir Institute of Technology, 2017.