Development of a graphite calorimeter for clinical electron beams

2014 Fiscal Year Final Research Report

• Project/Area Number: 24791365
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Radiation science
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: TANAKA Takahiro 独立行政法人産業技術総合研究所, 分析計測標準研究部門, 主任研究員 (30509667)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: グラファイトカロリーメータ / 治療用電子線 / 吸収線量

Outline of Final Research Achievements

We have newly developed a graphite calorimeter for clinical electron beams. This graphite calorimeter has a thin graphite entrance window to detect clinical electron beams. The thin graphite window is specially designed for this graphite calorimeter, and is coated with a high density graphite layer by using CVD (chemical vapor deposition) method. Consequently, the core (absorber) of the calorimeter is successfully positioned shallower than the depth of dose maximum of 6 MeV electron beams. We tested the graphite calorimeter by external electrical power measurements. The results show that the graphite calorimeter can measure external power of 70 μW with a standard deviation of about 5 μW.

Free Research Field

放射線計測