Generation and dose distribution measurement of flash x-ray in KALI-5000 system

Journal Article · Wed Oct 15 00:00:00 EDT 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3005485· OSTI ID:21266446

Menon, Rakhee; Roy, Amitava; Mitra, S; Sharma, A; Mondal, J; Mittal, K C; Nagesh, K V; Chakravarthy, D P ^[1]

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1. Accelerator and Pulse Power Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India)

Flash x-ray generation studies have been carried out in KALI-5000 Pulse power system. The intense relativistic electron beam has been bombarded on a tantalum target at anode to produce flash x-ray via bremsstrahlung conversion. The typical electron beam parameter was 360 kV, 18 kA, and 100 ns, with a few hundreds of A/cm{sup 2} current density. The x-ray dose has been measured with calcium sulfate:dysposium (CaSO{sub 4}:Dy) thermoluminescent dosimeter and the axial dose distribution has been characterized. It has been observed that the on axis dose falls of with distance {approx}1/x{sup n}, where n varies from 1.8 to 1.85. A maximum on axis dose of 46 mrad has been measured at 1 m distance from the source. A plastic scintillator with optical fiber coupled to a photomultiplier tube has been developed to measure the x-ray pulse width. The typical x-ray pulse width varied from 50 to 80 ns.

• OSTI ID: 21266446
• Journal Information: Review of Scientific Instruments, Vol. 79, Issue 10; Other Information: DOI: 10.1063/1.3005485; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BREMSSTRAHLUNG
CALCIUM SULFATES
CURRENT DENSITY
DOSIMETRY
DYSPROSIUM
ELECTRON BEAMS
PHOTOMULTIPLIERS
PLASTIC SCINTILLATORS
RADIATION DOSE DISTRIBUTIONS
RELATIVISTIC RANGE
SCINTILLATION COUNTERS
TANTALUM
THERMOLUMINESCENCE
THERMOLUMINESCENT DOSEMETERS
X RADIATION