US 7,564,040 B2
Device for correcting a signal derived from a detector
Patrice Ouvrier-Buffet, Saint Jorioz (France); Francis Glasser, Eybens (France); and Marc Accensi, Moirans (France)
Assigned to Commissariat a l'Energie Atomique, Paris (France)
Appl. No. 10/539,156
PCT Filed Nov. 25, 2003, PCT No. PCT/FR03/03488
§ 371(c)(1), (2), (4) Date Mar. 24, 2006,
PCT Pub. No. WO2004/063768, PCT Pub. Date Jul. 29, 2004.
Claims priority of application No. 02 15908 (FR), filed on Dec. 16, 2002.
Prior Publication US 2006/0202126 A1, Sep. 14, 2006
Int. Cl. G01J 1/42 (2006.01)
U.S. Cl. 250—395  [250/336.1; 702/190; 702/193] 20 Claims
OG exemplary drawing
 
1. A device for processing a detector current supplied by a particle detector, said device comprising:
a unit for reducing a fluctuating component of background noise present in said detector current and providing a treated detector current, said unit comprising:
a converter for associating an intermediate voltage signal with said detector current;
a threshold trigger for allowing said intermediate voltage signal to pass when said intermediate voltage signal exceeds a first predetermined threshold value and for preventing said intermediate voltage signal from passing when said intermediate voltage signal falls below a second predetermined threshold value, said threshold trigger providing a treated voltage signal; and
a converter for associating said treated detector current with said treated voltage signal; and
said device further comprising: an integrator for measuring a total charge transported by said treated detector current for a predetermined time interval.