CANBERRA Nuclear Measurements Marijke KETERS Director Detector Product Management Hamburg DESY – 27th of March 2012

Engineering and Projects BU Nuclear Measurements in the AREVA Group > Recycling > Value Development > Logistics > Clean-up > Chemistry > Enrichment > Fuel Supervisory Board Executive Board Mining Front End Back End Renewables Reactors & Services > New Builds > Installed Base > Equipment > Nuclear Measurement > Products & Technology CANBERRA Marketing & Sales Department Functional departments Regions (Germany and North America) > AREVA TA > Offshore wind > Solar > Bioenergies > Hydrogen & Storage AIDA Workshop DESY

CANBERRA is the Worldwide Leader in Nuclear Measurements Founded in 1965 Headquartered in Meriden, CT 1080 employees and seven manufacturing sites worldwide CANBERRA provides nuclear measurement solutions for safety and security to the  Nuclear power industry,  Laboratories and research  Fuel cycle facilities  Military, non-proliferation and security applications Nuclear Power Plants Fuel Cycle Facilities Laboratories and research Safety/Security Safeguards, Military

Detector design and manufacturing capabilities HPGe, Silicon (PIPS®) and gas Detectors 4 detector manufacturing entities France – Lingolsheim Belgium – Olen US – Meriden US – Oak Ridge AIDA Workshop DESY

Silicon PSD’s AIDA Workshop DESY

Position Sensitive Silicon detectors XRD – drug research Pixel Detectors for  Research: Omega, Medipix1, Medipix2, Medipix3, Alice, LHCB… Detector thickness 200 to 700µm, manufacturing on 5 inch wafers.  Industry: Medipix designs, single and Quad, 55x55µm², pixels, 300 µm thick, manufacturing on 6 inch wafers Double Sided Strip detectors  Detector thickness 200 to 1000µm.  Low leakage current: ex. typical leakage current per 40mm² pad, 1000µm thick < 10nA  Thin window <50nm AIDA Workshop DESY

PSD’s by resistive charge sharing Thin entrance window for charged particles analysis. The junction is a resistive electrode with two contacts. The position information is given by charge division measured on the contacts. Used for super heavy ion detection (element 112, 114, 116, …) at GSI, DUBNA, RIKEN, Jyvaskyla, Berkeley AIDA Workshop DESY

A total qty of 400 silicon drift detector with an active area of 7.5 x 7.0 cm² have been designed, produced and tested for ALICE inner tracking system. (15 years of development work) Spatial resolution of 30µm obtained anodes - pitch 294 µm. Segmented Silicon Drift Diodes (SSDD) AIDA Workshop DESY

Silicon Drift Diodes (SDD) kCPS OCR kCPS OCR 80mm² collimated, 500μm thick15mm² collimated, 500μm thick Preamplifier (Reset type )  Extremely good linearity at high count rate Large volume production  Industrial manufacturing site Full manufacturing control  internal SDD production AIDA Workshop DESY

High Purity Ge PSD’s AIDA Workshop DESY

Segmented Coaxial HPGe Detectors for gamma tracking Highlights :  Tracking capability by optimized pulse shape without unwanted crosstalk effects.  High granularity with even smaller possible “virtual” segments through pulse shape analysis in neighbor segments.  No heat cycling restrictions. Full compatibility with neutron annealing processes.  Any detector shape even irregular & tapered hexagons.  No dead zone.  Doppler effect correction. MSU SEGA detectors: 18 detectors each segmented in 32 folds Tracking simulation on an AGATA detector with 36 segments AIDA Workshop DESY

SPI Integral space telescope: a 19 capsule array with coded mask. Array of segmented Coaxial detectors Arrangement of encapsulated HPGe crystals in a unique cryostat For nuclear physics or other application requesting best efficiency (solid angle) and position information. Dedicated shape and assembly for optimized detection efficiency. From 2kg up to 12kg of HPGe material in one cryostat even with electrical cooling. More than 270 capsules delivered world wide (EuroBall, MiniBall, Agata, Greta). Up to 1100% relative efficiency possible on 7x 100% detectors with add-back measurement. Compatible with harsh environment (space application). Greta quartet detector: Four capsules each segmented in 36 = total of 148 channels per detector for best tracking ability 4x Gretina demonstrator phase with 5 detectors (inside view) Artist view of the Greta array with a total of 30 quartet detectors AIDA Workshop DESY

Segmented Planar HPGe Detectors for imaging Stopping power of HPGe or Si(Li) material  For HPGe thicknesses up to 20mm.  For Si(Li) thicknesses up to 10mm Any segmentation pattern (strip, double sided strip, pixel, else?) down to a 50µm pitch. Spatial resolution: down to 1mm. Robust & stable thin window contacts - not sensitive to heat cycling. Telescope arrangements in a unique custom designed cryostat Industrial or rough motion applications compliant even for space application. Cooled input stage, RT PA or dedicated ASICS with multiplexed readouts. Down to 1keV FWHM at 122keV. AIDA Workshop DESY

Compton camera imaging principle Major factors in Compton cameras:  Energy resolution FWHM  Position resolution within the detector  Doppler broadening Compton camera made up from two detectors, scatter detector and absorber.  Energy of the incident gamma ray can be found by adding the energy deposited in both detectors.  The position of interaction within the detectors are used to fix the cone apex.  Opening angle of the cone is calculated using the Compton scattering formula.  The source lies somewhere on the surface of the cone. Several cones will determine the precise localization of the source.  The energy range of the compton camera telescope can be extended by using a third detector enabling scattering for lower energies. AIDA Workshop DESY

Under development - High Z imaging sensor What is it?:  It acts as a camera taking images based on the number of particles which hit the pixels when the electronic shutter is open. It aims color imaging and dead time free operation. It is based on a Medipix3read out, a CMOS pixel detector readout chip designed to be connected to a pixel sensor. Development of HPGe pixel sensor for high Z applications with following features :  Cooled operation (-60°C) needed to reduce leakage current (nA range per pixel)  Resolve thermal stress issues on interconnections for the readout  Fine pixel segmentation (55micron) and bump-bonding developments (outsourced)  Dedicated passivation.  Thin HPGe wafer (700μm).  Diodes produced by Proprietary Lithography Process.  Collaboration with DESY Prof H. Graafsma’s group. AIDA Workshop DESY

Questions AIDA Workshop DESY