1 / 8

Spectrometric performance of Kurchatov Institute detectors

Spectrometric performance of Kurchatov Institute detectors. Detector 1. Problems: Detector not reaches the recommended voltage Detector has comparatively poor energy resolution Detector had a big cross-talk. Reasons: Detector has big leakage current

yelkins
Download Presentation

Spectrometric performance of Kurchatov Institute detectors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Spectrometric performance of Kurchatov Institute detectors Gusev K., JINR

  2. Gusev K., JINR

  3. Detector 1 Problems: • Detector not reaches the recommended voltage • Detector has comparatively poor energy resolution • Detector had a big cross-talk Reasons: • Detector has big leakage current (even at 3700 V, I > 10-10A in my estimation) • Preamplifier electronics are not work correctly Possible solutions: • Change the preamplifier • Measure V-I characteristic of detector and choose the optimal voltage • Pump and maybe heat Gusev K., JINR

  4. Detector 2 Strange instability of peaks (doubling effect) Now this effect is absent “Wandering” = contact or electronic problems Leakage current at operation voltage is normal Gusev K., JINR

  5. Detector 3 Detector has poor energy resolution FWHM =3.0 keV Possible reason – big current (> 10-10A) Possible solution is similar to detector 1 Gusev K., JINR

  6. Detector 4 No problems! Gusev K., JINR

  7. Detector 5 Poor resolution (FWHM =3.05 keV), but leakage current is good Need further investigations Gusev K., JINR

  8. Conclusions • All detectors are prepared for work, all crystals are good but their spectrometric performance are not ideal (especially for detectors 1, 3 and 5) • For achieving the best performance of KI detectors we need: • Good measurement conditions; • Enough time for determination of various detector parameters (at least V-I characteristics); • Precision pulse generator; • Devices for pump and heat processes. • We have to make all available procedures before any other activities (such as repacking, etc.) Gusev K., JINR

More Related