| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2011: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
|
|---|
| Outline of Final Research Achievements |
We are developing Transition-Edge Sensor (TES) microcalorimeters for gamma-ray detection. We have fabricated a device with a bismuth absorber of a volume of 0.5 mm x 1 mm x 1 mm . The energy resolution of the device was 4.1 keV at 662 keV, while its baseline energy resolution was 3.2 keV. These resolutions are more than an order of magnitude worse than its design value. It was because the device suffered from thermal noise due to the gamma rays scattered by the silicon substrate. We also fabricated a position-sensitive TES microcalorimeter, but it was not possible to detect signals from the device because the device also suffered from the noise and because the transition temperature of the TESs was too high.
|
