hpg e detectors technology
DESCRIPTION
Hpg e detectors technology. Dzhelepov Laboratory of Nuclear Problems. Participants : Łukasz Fulek , AGH UST Cracow Paweł Gaik, AGH UST Cracow Supervisor : mgr inż. Dariusz Borowicz, IFJ PAN Cracow , DLNP JINR. - PowerPoint PPT PresentationTRANSCRIPT
29th July 2011 Student Practice in JINR Fields of Research - HPGe detectors technologies 2
Experimental Research Department of Nuclear Spectroscopy and
Radiochemistry
Participants:• Łukasz Fulek, AGH UST Cracow• Paweł Gaik, AGH UST Cracow
Supervisor:mgr inż. Dariusz Borowicz, IFJ PAN Cracow, DLNP JINR
29th July 2011 Student Practice in JINR Fields of Research - HPGe detectors technologies 3
• ƴ - ray spectroscopy
• Nuclear medicine
• Environmental monitoring
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PLANAR DETECTORS
Detecting low energies up to 150 keV
Polarization measurements
Small electrical capacitance
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COAXIAL DETECTORS
For high energies up to a few MeV
Diameter of detectors commonly used – 6 cm
Larger values of electrical capacitance than for planar detectors ( up to 20 pF)
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29th July 2011 Student Practice in JINR Fields of Research - HPGe detectors technologies 8
SEGMENTED HPGe DETECTORS
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Making of the p-n junction
Cutting out the protecion ring
Evaporation of Au on p-n juntion side
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Etching and oxidizing for an ohmic contact.
Temperature evaporation of Pd and Au upon a prepared surface.
The last etching and passivation
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Producing our own detectors
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Results
BEFORE
AFTER
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241Am
FWHM 238eV
0
500
1000
1500
2000
2500
3000
5 10 15 20 25 30
E[keV]
l.zliczen
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SPECIAL THANKS TO•Dr Stanislav Z. Pakuliak (BLTP JINR, Dubna)
•mgr inż. Dariusz Borowicz (IFJ, Cracow / JINR, Dubna)
•Dr hab. Roman Zawodny (UAM, Poznań)
•Dr Władysław Chmielowski (JINR, Dubna)