Micro-calorimeter for measuring absolute pulse energy of free electron lasers

2015 Fiscal Year Final Research Report

• Project/Area Number: 26600149
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Saito Norio 国立研究開発法人産業技術総合研究所, 分析計測標準研究部門, 副研究部門長 (80344191)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: X線自由電子レーザ / カロリメータ / パルスエネルギー / 光強度絶対計測

Outline of Final Research Achievements

Micro-calorimeter operated at room temperature has been developed for measuring the pulse energy of free electron X-ray lasers. The size of the micro-calorimeter is of 2.2 cm in diameter and 2.1 cm in length, whereas the previous calorimeter is of 10 cm in diameter and 20 cm in length.
The performance test of the new calorimeter was carried out using a synchrotron radiation with 3 keV - 5 keV. The statistical variation of the measurement is confirmed to be about ±1μW, which is compatible to our cryogenic radiometer. The absolute value of the incident radiation power measured by the micro-calorimeter agrees with that by the cryogenic radiometer.

Free Research Field

放射線計測