View source for June, 21, Cosmic background BC408 on top of HpGe

=Cosmic ray test of BC408 and HpGe coincidence=

5:00 pm started overnight  coincidence run  file name jun21_2007_background002<br>

jun21_2007_background002 was stopped at 11:12 am on June, 22<br>

Lead bricks with thickness of 10.4 cm were used as a shielding for HpGe detector on the both sides, front layer was 20.4 cm and bottom one 5 cm. There was not lead on top of HpGe detector<br>


'''1. The ungated cosmic ray spectrum obtained from HpGe detector'''<br>

[[Image:Example74.jpg]]

'''2.Cosmic ray spectrum detected in fast plastic scintillator BC408'''<br>

[[Image:Example21.jpg]]


'''3.Spectrum of time intervals between signals coming from germanium detector and fast plastic scintillator'''<br>

[[Image:Example73.jpg]]

'''4. The cosmic ray spectrum obtained from HpGe detector in coincidence with fast plastic scintillator BC408'''<br>

[[Image:Example72.jpg]]