Detector Characterization Project in the The JWST Detector Characterization Project in the Independent Detector Testing Laboratory Don Figer, STScI/JHU January 9, 2003 AAS 201 Seattle, WA

Detectors Are Important for JWST 0.1 1 10 Wavelength [mm] Signal [e-/sec/pix] Zodiacal Light Sunshield JWST requirement JWST goal R=5 R=1000 1 2 3 4 6 8 Read noise per exposure [electrons] Duration of DRM NIR Observations [yrs] Images Spectra Dark current = 0.126 e - /sec 0.020 e 0.003 e

JWST NIR Detector Requirements

IDTL Role in JWST Detector Program

Past and present personnel Eddie Bergeron Data Analyst Tom Reeves Lab Technician Robert Barkhouser Optical Engineer Mike Telewicz Intern Bernie Rauscher Project Scientist Utkarsh Sharma Graduate Student Gretchen Greene Mechanical Engineer Steve McCandliss JHU Lead Ernie Morse Data Analyst Monica Rivera Intern Scott Fels Intern Don Figer Director Russ Pelton Technician Sito Balleza Systems Engineer Mike Regan System Scientist

Controller Electronics IDTL Test System Controller Electronics Dewar Entrance Window Vacuum Hose He Lines

Hawaii 1R with 5.0 mu Cutoff

Rockwell & Raytheon 2K Devices

IDTL Measurements: Dark Current Lowest measured dark current is ~0.006 e-/s/pixel.

IDTL Measurements: Read Noise Read noise is ~10 e- for large number of reads. (system read noise is ~2.5 e-)

IDTL Measurements: Gain

Hawaii 1R with 5 um Cutoff

IDTL Test System

IDTL Measurements: AQE QE measurements have an accuracy of ~10%.

IDTL Measurements: RQE Relative QE maps show significant variations across field