| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2015: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Outline of Final Research Achievements |
The main goal of this study is precise measurement of cosmic microwave background (CMB) polarization, and exploring the finite neutrino masses with the data. We continued the POLARBEAR-1 data taking, and developed a new receiver POLARBEAR-2, which has six times higher mapping speed, for the objective.
We successfully improved the precision for the lensing B-mode power spectrum, and laid a groundwork for future precise measurement of neutrino masses.
The development and integration in the laboratory of POLARBEAR-2 is completed. The receiver was successfully deployed at the observation site in the Atacama desert, Chile in late 2018, and the first light was received at the beginning of 2019. After the commissioning work, we're almost ready to start the science observation.
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