Table 1 Specification and the provisional teams of the WPT-S and EFD systems

WPT

WPT-S_1-4

Wire antennas (15-m) and their preamps (< 10 MHz in E-field)

0.80 kg ×4

Nippi Corporation

Y. Kasaba (Tohoku Univ.) et al.

WPT-Pre_1-4

0.18 kg ×4

Mitsubishi Heavy Industries

H. Kojima (Kyoto Univ.) et al.

PWE-E

6.33 kg in total

Mitsubishi Heavy Industries

H. Kojima (Kyoto Univ.) et al.

EFD (a part of EWO)

Low-frequency E-field receiver (< 224 Hz) with spacecraft potential

0.73 kg (EWO)

Mitsubishi Heavy Industries

Y. Kasaba (Kyoto Univ.) et al.

MV99 V

± 99 V power supply for EFD bias control

0.10 kg

Meisei Electric Co.

Y. Kasaba (Tohoku Univ.) et al.

MWE_1-2

Deployment controller for MAST and WPT-S

0.45 kg

0.42 kg

Nippi Corporation

A. Matsuoka (ISAS/JAXA) et al.