PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array1/16 Ch. Hartinger / L. Barl Ge:Ga Detector Arrays

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array2/16 Overview Performance results of FM HS Modules Status of the LS & HS Array Integration

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array3/16 8 Test Runs (32 modules) MPE Test Equipment Improvements 10 filter capacitors at the connector distribution panel inside the cryostat Sense lines for the VDDA, VSS, GRD, VDDr and Zero_bias supply lines Optics include only a black body, 1 mirror but no attenuation filters Stability of BB temperature is < 1 mK Standard Measurements Warm functional test at RT checks the supply currents Cold functional test at 4 K and the output frames Cold performance test (1.85 K) -Dark current -Noise Equivalent Power (NEP) -Responsivity FM HS Modules

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array4/16 Dark current Background of 4.2 K corresponds to a flux < exp(-18) W/pixel Cold Performance Test

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array5/16 Dark current Strong variation between modules Cold Performance Test

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array6/16 Noise Equivalent Power (NEP) The modules behave very similar up to a bias of 70mV, where the sensitivity is maximal Cold Performance Test The NEP is strongly dependent on the flux

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array7/16 Responsivity The responsivity varies by more than a factor 3 for different modules The arrangement in the detector array was chosen according to the responsivity Cold Performance Test

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array8/16 Distribution of the Responsivity in the TEL Focal Plane The modules with the high values were positioned at the center of the array HS Integration

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array9/16 Homogeneity of the Responsivity Each module has its own characteristic distribution not caused by an inhomogeneous flux FM174: almost homogeneous FM190: strong gradient Cold Performance Test

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array10/16 Reproducibility of the measurements Very good reproducibility of the data points after two tests (FEE changed) Multiple tests of modules at different positions in the set-up Different distribution between the two tests (FEE exchanged, connections re-glued) Cold Performance Test The test optics delivers a nearly homogeneous flux distribution

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array11/16 HS-Modules Status after Integration 25 modules integrated 2 open pixels 2 pixel connections cut 2 calibrated temperature sensors (FM161 + FM168) HS-Detector Status ESD protection by aluminized cigarette wrapping paper during the integration

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array12/16 Arrangement of the HS-Modules HS-Detector Status Front view of the HS-detector

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array13/16 Arrangement of the LS-Modules 25 modules integrated in FM FM 135 behavior of few pixels undetermined 3 open pixels 1 pixel connection was cut 2 calibrated temperature sensors (FM132 + FM135) LS-Detector Status

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array14/16 Mechanical Design Blue Detector Array FM Blue Detector Assembly – Integration Status FM PACS Blue Detector Array Integration Status               Mechanical Parts Blackened Baffles Cable Mount BD 4K Post BD Integration Tool BD HP Heater Harness Flasher Sapphire Filter FLBS 25 Detector Modules Suspension Feet Distribution BD Cooling Strap BD ASTECMPEKTQMC J.B.

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array15/16 FM Red Detector Assembly – Integration Status Detector Modules with FO 4K Cooling Staps Flat Mirror Housing Frame Filter Mount (5 Stripes) Baffle Frame Baffling System Clamping Device Filter 2K Cooling Stap I/F Sapphire Filter Baffles Mechanical Design Red Detector Array FM PACS Red Detector Array Integration Status Mechanical Parts Blackened Baffles Mirror Red Detector Cable Mount RD 4K Post RD Integration Tool RD HP Heater Harness Flasher Sapphire Filter FLRS1 RD 25 Detector Modules Suspension Feet Distribution RD Cooling Strap RD Filter FLRS2 Pupil RD ASTECMPEKTQMC J.B.                

PACS SVR: 22/23 June 2006 MPE - Ge:Ga Detector Array16/16 Work in Progress Bake out at 80°C for 3 days Final inspection prior to delivery to KT Warm functional test after cold vibration test