bcal wrapping test - halldweb.jlab.org · bcal_wrapping_test.pptx author: elton smith created date:...

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Test of wrapping on light guides Elton Smith Bcal Readout Meeting Mar 6, 2012

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Page 1: Bcal wrapping test - halldweb.jlab.org · Bcal_wrapping_test.pptx Author: Elton Smith Created Date: 3/6/2012 1:35:55 AM

Test of wrapping on light guides

Elton Smith Bcal Readout Meeting Mar 6, 2012

Page 2: Bcal wrapping test - halldweb.jlab.org · Bcal_wrapping_test.pptx Author: Elton Smith Created Date: 3/6/2012 1:35:55 AM

Setup

  Use blue LED as source, SiPM as detector   Insert white paper in front of fibers to diffuse light   Test 3 wrappings (Tedlar, acid-free paper, Al mylar)   Measure each wrapping three times, disassembling

setup each time.

Page 3: Bcal wrapping test - halldweb.jlab.org · Bcal_wrapping_test.pptx Author: Elton Smith Created Date: 3/6/2012 1:35:55 AM

Measurements

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  No significant differences between wrapping (~10%)

  Choose black Tedlar because it is thin and opaque