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View of the HRPT gas mixture cleaning/adding system

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View of the HRPT gas mixture cleaning/adding system

(2)

0 500 1000 1500 2000 2500 0

20 40 60 80 100 120 140 160 180

0 100 200 300 400 500 600 700 800 900 1000

3H

p+3H

After cleaning CF4 added.

w=7%

counts

ch no.

HRPT PHS, monodetector 1.6kV.

Am-Be n-source. March’09

Before opening detector w=60%

p

0 500 1000 1500 2000 2500 3000

0 100 200 300 400 500

0 500 1000 1500 2000

0 50 100 150 200

PHS

ch no. (December 1999) Dec’99 w=12%

ch no. (April 2009)

Comparison of PHS from Decemmer 1999 and the present one after cleaning (April 2009)

Apr’09 w=7%

Comparison of the Pulse Hight Spectra before (2008) and after (2009) HRPT gas cleaning/pressurizing

Ghost peak due to noise

(3)

Comparison of the diffraction patterns before (2008) and after (2009) HRPT gas cleaning/pressurizing

Intensity gain ~18%

data are normalized to the same neutron monitor

2009 2008

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