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Recent Results on Gamma Spectrometric Measurements at LNGS

Updates from LNGS include new Germanium detectors GeMPI-2 and GeMPI-3, hall space expansion, and GERDA Meeting highlights on material screening, forthcoming results, and existing uncertainties. Discussions cover Lexan, electronic components, Kapton coax cable, and unresolved queries on scheduling, materials, sensitivities, and intercomparisons.

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Recent Results on Gamma Spectrometric Measurements at LNGS

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  1. RECENT RESULTS ON GAMMA SPECTROMETRIC MEASUREMENTS AT LNGS Matthias Laubenstein I.N.F.N. - L.N.G.S.

  2. Recent developments • two new Germanium detectors, similar to GeMPI detector (in fact they are called GeMPI-2 and GeMPI-3, GeMPI-2 still under test; GeMPI-3 arrived on October 25th, shielding still to be built) • new space available in hall A … but it is already almost filled up … GERDA Meeting @ Tübingen, TG 11

  3. Material screening (old data)(expanded uncertainties and decision thresholds with k=2) GERDA Meeting @ Tübingen, TG 11

  4. Material screening (with new data)(expanded uncertainties and decision thresholds with k=2) GERDA Meeting @ Tübingen, TG 11

  5. Forthcoming results and analyses • Lexan • electronic components (in measurement also for other experiments, but up to know nothing “clean”, O(hundreths of Bq/kg) • Kapton coax cable (only 30 g, now ca. 12 days) GERDA Meeting @ Tübingen, TG 11

  6. Still the same question marks • Time schedule for measurements ? • List of materials to be measured ? • Required sensitivities ? • Intercomparison between radioactivity analysis laboratories ? • Intercomparison between screening techniques ? GERDA Meeting @ Tübingen, TG 11

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