P.O. Box 666
Chesterland, OH 44026
Phone: (800) 795-5226
Fax: (440) 729-8238
Radiation Therapy
3-D Water Phantom Dosimetry
Waste Monitors
ADCL Calibrations
Area Monitors
Barometers-Thermometers-Accessories
Block-Mold Room
CT Electron Density Phantom
Digital Portal Imaging
Electrometers
HDR-LDR Accessories
IMRT QA Equipment
Ion Chambers
Linac Daily Output QA Devices
Patient Dose Verification System
Radiation Survey Meters
Room Lasers
Sensitometers-Desensitometers
Superficial and Orthovoltage Radiotherapy Equipment
TG-51 Water Phantom
Triax Cable Reels
Triax Extension Cables
Water Equivalent Phantoms
Diagnostic Radiology
Calibration Services
Multi Function Meters
Radiation Protection-Monitoring
Test Patterns-Accessories
Test Phantoms
Radiation Safety-Homeland Security
Detectors
Digital Portal Imaging
Gate Monitors
Handheld Survey Meters
Personal Dosimeters
Portal Monitor
Radiation Simulation-Training
Response Kits
Nuclear Medicine
Dose Calibrators
Lead Shielding
Thyroid Uptake System
Ion Chambers :
Roos® Chamber
The Roos electron chamber, developed in cooperation with Dr. Roos, PTB-Braunschweig (National Laboratory of Germany), is used as a reference electron chamber. It is recommended by the IAEA for high precision electron dosimetry in radiation therapy. The chamber has a 4 mm wide guard ring to exclude any perturbation effect even at low electron energies. The polarity effect is negligible (< 0.5 % at 10 MeV).
The energy response is only influenced by the stopping power ratios. The chamber is waterproof for absolute dose and depth dose measurements in a water phantom. The acrylic entrance window has a thickness of 1 mm. The nominal useful energy range is from 2 MeV to 45 MeV. A calibration certificate with a Co-60 calibration factor given in absorbed dose to water is included. Air density correction is required for each measurement. A radioactive check device with adapter is available as an option. The chamber cable length is 1.08 m.
Features:
Precision plane-parallel reference chamber for absolute dosimetry of high-energy electron radiation
Vented sensitive volume of 0.35 cm³
Perturbation-free design and minimal polarity effect
Suitable for use in water and in solid state phantoms
Click Here to Download a Printable Information Sheet. (.PDF format)
PH 1-800-795-5226
FAX 440-729-8238
P.O. Box 666 Chesterland, OH 44026
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