Assessment of the cosmic-ray effects to the cosmic microwave background observation satellite LiteBIRD
JAXA Supercomputer System Annual Report April 2020-March 2021
Report Number: R20ECWU10
Subject Category: Cooperative Graduate School System
- Responsible Representative: Masahiro Tsujimoto (Assistant Professor, Department of Astrophysics, ISAS, JAXA)
- Contact Information: Masahiro Tsujimoto(tsujimot@astro.isas.jaxa.jp)
- Members: Masahiro Tsujimoto, Takuya Midooka, Tomoki Nagatsuka, Mayu Tominaga, Samantha Stever, Hayato Takakura, Takashi Hasebe
Abstract
Assessment of the cosmic-ray effects to the cosmic microwave background observation satellite LiteBIRD.
Reference URL
Please refer to 'LiteBIRD: インフレーション宇宙を検証するCMB偏光観測小型科学衛星'.
Reasons and benefits of using JAXA Supercomputer System
This study requires to simulate very long observation data with different setting parameters. The calculation can be done in parallel, thus the use of HPC is suited.
Achievements of the Year
We conducted the following study this year. We constructed a physical model for the interaction between cosmic-rays and the detectors and generated mock observation data in the time-domain that are contaminated by cosmic-ray noise injections. We deconvolved the data with the scannling law of the spacecraft and the rotating half-wave plate to calculate the large-scale anisotropy of the linear polarization expected from the primordial gravitational wave of the cosmic inflation in an end-to-end manner. In this study, we explored the HPC's utility in accelerating the simulation of the time-domain data.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: N/A
- Thread Parallelization Methods: N/A
- Number of Processes: 1
- Elapsed Time per Case: 1 Hour(s)
Resources Used(JSS2)
Fraction of Usage in Total Resources*1(%): 0.00
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| SORA-MA | 0.00 | 0.00 |
| SORA-PP | 346.64 | 0.00 |
| SORA-LM | 89.26 | 0.05 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 32.90 | 0.03 |
| /data | 329.02 | 0.01 |
| /ltmp | 6,738.28 | 0.57 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.00 | 0.00 |
*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
Resources Used(JSS3)
Fraction of Usage in Total Resources*1(%): 0.01
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 0.00 | 0.00 |
| TOKI-RURI | 15.02 | 0.00 |
| TOKI-TRURI | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 46.09 | 0.03 |
| /data | 460.94 | 0.01 |
| /ssd | 460.94 | 0.24 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.00 | 0.00 |
*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report April 2020-March 2021