View source for CH He3 Background Measurements

Be careful with pre-amp. Bumping SHV cable from pre-amp to He3 tube results in false counts leading to hundreds of extra counts. 

{| class="wikitable mw-collapsible mw-collapsed" border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
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| '''1250V Source Out Data'''||
|-
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
|-
|  1  || Unshielded detector at +1250V || 255 || No || 30 || 300 ||  ||
|-
|  2  || Unshielded detector at +1250V || 255 || No || 18 || 300 ||  ||
|-
|  3  || Unshielded detector at +1250V || 255 || No || 31 || 300 ||  ||
|-
|  4  || Unshielded detector at +1250V || 255 || No || 24 || 300 ||  ||
|-
|  5  || Unshielded detector at +1250V || 255 || No || 39 || 300 ||  ||
|-
|  6  || Unshielded detector at +1250V || 255 || No || 42 || 300 ||  ||
|-
|  7  || Unshielded detector at +1250V || 255 || No || 34 || 300 ||  ||
|-
|  8  || Unshielded detector at +1250V || 255 || No || 45 || 300 ||  ||
|-
|  9  || Unshielded detector at +1250V || 255 || No || 34 || 300 ||  ||
|-
|  10 || Unshielded detector at +1250V || 255 || No || 36 || 300 ||  ||
|-
|}

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[[PAS_He3_Detector]]