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arxiv 0805.1499 v2 pith:GPS6YDUZ submitted 2008-05-10 physics.ins-det hep-exnucl-ex

Transparency of 0.2% GdCl3 Doped Water in a Stainless Steel Test Environment

classification physics.ins-det hep-exnucl-ex
keywords waterdetectorsdopedtransparencycerenkovgdcl3instrumentmeasurements
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The possibility of neutron and neutrino detection using water Cerenkov detectors doped with gadolinium holds the promise of constructing very large high-efficiency detectors with wide-ranging application in basic science and national security. This study addressed a major concern regarding the feasibility of such detectors: the transparency of the doped water to the ultraviolet Cerenkov light. We report on experiments conducted using a 19-meter water transparency measuring instrument and associated materials test tank. Sensitive measurements of the transparency of water doped with 0.2% GdCl3 at 337nm, 400nm and 420nm were made using this instrument. These measurements indicate that GdCl3 is not an appropriate dopant in stainless steel constructed water Cerenkov detectors.

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