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Waterproof PTW Farmer® Chamber
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Rigid Stem Ionization Chambers
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PTW Farmer® Ionization Chambers

farmer
The 0.6 cm3 PTW Farmer chambers are designed for absolute photon and electron dosimetry with therapy dosemeters. Three chamber types for measurements in air or in solid state phantom material are available:
Type 30010 is the standard chamber. The wall material is graphite with a protective acrylic cover, and the electrode is made of Al. The nominal photon energy range is from 30 kV to 50 MV.
Type 30011 with graphite wall and graphite electrode is used for therapy dosimetry, where a completely graphite-built chamber is required. The nominal photon energy range is from 140 kV to 50 MV.
Type 30012 is used for therapy dosimetry, where a chamber with graphite wall and Al electrode is required. The nominal photon energy range is from 60 kV to 50 MV.