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

AAS Don Figer January 9, E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E Wavelength [  m] Signal [e-/sec/pix] Zodiacal Light Sunshield JWST requirement JWST goal R=5 R=1000 Detectors Are Important for JWST

AAS Don Figer January 9, 2003 JWST NIR Detector Requirements

AAS Don Figer January 9, 2003 IDTL Role in JWST Detector Program

AAS Don Figer January 9, 2003 NIR Detector Characteristics lDark current lRead noise lLinearity lLatent charge (persistence) lRelative and Absolute Quantum efficiency (QE) lIntra-pixel sensitivity lThermal stability lRadiation immunity

AAS Don Figer January 9, 2003 Past and present personnel Eddie Bergeron Data Analyst Mike Telewicz Intern Gretchen Greene Mechanical Engineer Monica Rivera Intern Russ Pelton Technician Tom Reeves Lab Technician Bernie Rauscher Project Scientist Steve McCandliss JHU Lead Scott Fels Intern Sito Balleza Systems Engineer Robert Barkhouser Optical Engineer Utkarsh Sharma Graduate Student Ernie Morse Data Analyst Don Figer Director Mike Regan System Scientist

AAS Don Figer January 9, 2003 IDTL provides unbiased testing of detectors and has been operating for 2 years —Completed Target Field Simulation Testbed project (18 months, 8/02 end) —Will finish JWST Detector Characterization project (2 years, 3/03 end) In pre-proposal phase —JDC+Figer  3/03-6/10  perform optimal-use testing  develop High Volume Testing (HVT) program  collaborate on HVT  perform concurrence testing  perform anamoly mitigation testing  perform ground calibration —TFST+ Sivaramakrishnan  24 months  produce 'day in the life of' JWST WFSC  determine what factors impact OPD measurement  provide regression test data for pipelines, WFSC —SNAP Figer  18 months+  develop NIR detector program  provide concurrence testing —LSST Figer  24 months+  develop detector program  provide prototype testing —APOspec Uomoto —WIRC Meixner IDTL

AAS Don Figer January 9, 2003 IDTL Test System Controller Electronics Vacuum Hose He Lines Entrance Window Dewar

AAS Don Figer January 9, 2003 Hawaii 1R with 5.0 mu Cutoff

AAS Don Figer January 9, 2003 Rockwell & Raytheon 2K Devices

AAS Don Figer January 9, 2003 IDTL Measurements: Dark Current Lowest measured dark current is ~0.006 e  /s/pixel.

AAS Don Figer January 9, 2003 Read noise is ~10 e  for large number of reads. (system read noise is ~2.5 e  ) IDTL Measurements: Read Noise

AAS Don Figer January 9, 2003 IDTL Measurements: Gain

AAS Don Figer January 9, 2003 Hawaii 1R with 5 um Cutoff

AAS Don Figer January 9, 2003 IDTL Test System

AAS Don Figer January 9, 2003 lQE measurements have an accuracy of ~10%. IDTL Measurements: AQE

AAS Don Figer January 9, 2003 lRelative QE maps show significant variations across field IDTL Measurements: RQE

AAS Don Figer January 9, 2003 JWST Detectors ~80 megapixels of flight- qualified detectors!!! (~10 times all detectors on telescopes today) HST HST/NICMOS!