Operation manual model let-sw2 june 2004 far west technology, inc. 330 south kellogg ave, suite d goleta, ca 93117.
Model let -2 far west technology 1 general information this instrument is manufactured in the united states of america by: far west technology, inc. 330 south kellogg ave, suite d goleta, ca 93117-3814 tel: 805.964.3615 fax: 805.964.3162 email: support@fwt.Com web site: www.Fwt.Com far west technolo...
Model let -2 far west technology 2 i. Introduction the instrument, as shown in figure 1, is a spherical tissue equivalent proportional counter. It is usually filled with tissue equivalent gas at a reduced pressure. An aluminum shell is used as a vacuum tight container for the sphere and is mounted o...
Model let -2 far west technology 3 iii. Filling the instrument with gas the standard instrument is provided with a quick-connect manufactured by crawford fitting company. This connector mates with a swagelok b-qc4-d-400 deso-type connector. These connectors contain spring loaded plungers that seat a...
Model let -2 far west technology 4 the sig connector should be connected to a low noise preamplifier. The type usually specified for cooled ge(li) detectors is suitable (tennelec tc-174 or 175, or ortec 142a or 142pc). Gain should be approximately 100 to 200 mv/mev(ge). The detector output is ac cou...
Model let -2 far west technology 5 volts if the detector has an effective diameter of 1 micron. The signal from the preamplifier and through the linear amplifier is presented to a pulse height analyzer. A small magnet is placed on the counter where "magnet" is written to turn on the alpha source. Th...
Model let -2 far west technology 6 8. H. H. Rossi, chapter 2 in f. H. Attix and w. C. Roesch, radiation dosimetry, volume 1, second edition, academic press, new york and london, 1968. 9. W. H. Grant, iii, g. D. Oliver jr, and b. A. Mitchel.
