Oral Presentation

Development of the SMI detectors

Author(s): Takehiko Wada (ISAS/JAXA) The SMI team

Presenter: Takehiko Wada (ISAS/JAXA)

The development plan and current status of SPICA/SMI detector are presented.
Three Si:Sb 1Kx1K FPAs, which are sensitive up to wavelength of 38 um, are used for imaging (CAM), low- and mid-resolution spectrometer (LR & MR), and one Si:As 1Kx1K FPA, which is sensitive up to 26 um, is used for high-resolution spectrometer (HR) in the current design.
The Si:Sb 1Kx1K FPA is now under development based on the Spitzer 128x128 Si:Sb detector and the WISE 1Kx1K readout integrated circuit (ROIC) heritage. The dark current of Si:Sb material for SPICA is successfully reduced down to 0.4 e/s/pix (1/100 of Spitzer Si:Sb). A study to improve noise performance of the ROIC is planned.
The Si:As 1Kx1K FPA will be re-fabricated based on JWST/MIRI design.
Both work will be done in tight collaboration between JAXA and ASIAA with help of JPL.