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Potential Spanish contributions to the ASTROGAM Si tracker Margarita Hernanz José L. Gálvez, Laura Alvarez, Biel Artigues Institute of Space Sciences (CSIC-IEEC) on behalf of a larger collaboration with IMB (CNM-CSIC) Bellaterra (Barcelona), Spain M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Development of CdTe pixel detectors for hard X-‐/so9 gamma-‐ray imaging 1st step: development of CdTe pixel detectors for hard X/soft gamma-ray imaging - with NUCAM ASIC area: 12.15 x 12.15 mm² thickness: 2mm pixel size: 1 x 1 mm² 11x11 = 121 pixels NUCAM ASIC: RAL (UK) 128 channel low noise front-end ASIC P. Seller et al., IEEE 2006 M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 CdTe: Acrorad 2009 Development of CdTe pixel detectors for hard X-‐/so9 gamma-‐ray imaging Detector fanin - Pitch adapter board - used to attach the pixelated detector to the readout chip: designed & manufactured in our project Stud Bump Bonding technology Attachment of the detector to the fanin M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Development of CdTe pixel detectors for hard X-‐/so9 gamma-‐ray imaging. First measurements (2009-2010) Highly Uniform; 4% of 121 pixels had some problems. 9 central pixels shown M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Development of CdTe pixel detectors for hard X-‐/so9 gamma-‐ray imaging 2nd step: a) new ASIC to allow characterization of a stack of 2 CdTe layers (measurement of coincidences) New detector fanin to attach the pixelated detector to the VATA readout ASIC: designed & manufactured in our project View of different fanins within a 4-inch Sapphire wafer New detector daughter board assembled to the cold finger New FEE design M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Development of CdTe pixel detectors for hard X-‐/so9 gamma-‐ray imaging 2nd step: b) mechanical set-up for a stack of 2 CdTe layers: PPF and PTF configurations HV Bias Test bench for spectroscopy measurements of the detector in the Planar Parallel Field configuration Cooling plate Experimental set-up: detector test bench in a vacuum chamber with a cooling plate M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Detectors for hard X/soft gamma-rays Some papers in SPIE (Amsterdam 2012 meeting) and NIMA M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Detectors for gamma-rays. Simulations for DUAL / M3 José M. Alvarez, PhD Thesis, 2013 M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Instrumentation for High-E Astrophysics: X-rays ICE only M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Mechanical design of the LOFT-WFM instrument Figura 1: Instrumento WFM Figura 3: Uno de los detectores ensamblados (detector assembly) en la bandeja del detector (detector support plate) Figura 2: Geometría de una cámara WFM Figura 4: Vista de sección del mecanismo de pretensión de la máscara codificada M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 Figura 5: Vista explosionada de una cámara de WFM Thermal design of the LOFT-WFM WFM de LOFT Background simulations Cámara WFM ICU Figura 6: Modelo térmico geométrico y matemático (GMM/TMM) del WFM Figura 8: Geometría de la cámara WFM Figura 9: Ruido de fondo sobre el WFM Figura 7: Esquema del proceso W deorkshop transferencia calor en la M. Hernanz -‐ ASTROGAM – Fde rasca:, 9-‐10/12/2014 cámara del WFM M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 • Si strip detectors • Collaboration with FBK (general) M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014 M. Hernanz -‐ ASTROGAM Workshop – Frasca:, 9-‐10/12/2014
