A case study in nuclear physics: instrumentation for the Super Separator Spectrometer S3 Collaboration (LoI signed by 28 laboratoires)  ANL (US), CENBG, CSNSM, JINR-FLNR, (Russia), GANIL, France, GSI (Germany), INFN Legnaro, (Italy), IPHC, France, IPNL, , Irfu CEA Saclay, IPNO, France, JYFL (Finland), K.U. Leuven (Belgium), Liverpool-U, (UK), LNS (Italy), LPSC, MSU (US), LMU, (Germany), Nanjing-U (China), Northern Illinois University (US), SAS Bratislava, (Slovaquia), Smoluchowski Institute (Poland), CEA-DAM; SUBATECH, TAMU (US), U. Mainz (Germany), York-U (UK), Vinca Institute (Serbia)

S3 separator-spectrometer GANIL/SPIRAL1/SPIRAL2 facility GANIL/SPIRAL 1 today DESIR Facility low energy RIB S3 separator-spectrometer LINAC: 33MeV p, 40 MeV d, 14.5 A MeV HI A/q=3 HI source Up to 1mA Neutrons For Science A/q=2 source p, d, 3,4He 5mA

Physics objectives Nuclei produced by Fusion-Evaporation Atomic Phyics FISIC project LoI_Day1_1 Nuclei produced by Fusion-Evaporation Proton Dripline & N=Z nuclei Tests of Shell Model Single-Particle structure  Development of Collectivity Shape coexistence Ground-State Properties Standard Model Heavy and Superheavy Elements  Synthesis Spectroscopy and Structure  Ground-State Properties Neutron-Rich Nuclei  Single-Particle structure  Quenching of Shell Gaps  13 LoIs submitted LoIs signed by 170 physicists Requested beam time : 380 days !!!

S3 Baseline Mass spectrometer Momentum achromat Achromatic point Principle : Two-stage selection (Bρ & m/q) that will achieve very good rejection of both the beam and adjacent mass channels of reaction products High power Rotating targets including actinides Large acceptance Multipoles Opened and closed External Beam dump & Movable fingers Get rid of >99,9% of the beam Beam Mass spectrometer Momentum achromat Multi-purpose Experimental Room Achromatic point Electric dipole Magnetic dipole Implantation-decay station At the mass dispersive plane Low Energy Branch DESIR

The Recoil Decay Tagging Technique (E, t) Tracking Detectors (x,y,t) Separator-Spectrometer Heavy ion (E, t, x,y) Beam Target α, e-, γ (E, t, x,y) Coincidence  Prompt Spectroscopy Genetic Correlation  Decay spectroscopy

Implantation-decay spectroscopy station CSNSM, IPHC, Irfu, GANIL TOF: Emissive foil detectors Large size (200x100mm2) Very low thickness Time resolution < 1ns Si Tunnel Large size (60x100mm2) Conversion electrons FWHM < 5 keV And escaped alpha FWHM < 15 keV Gamma detection First Step  use of EXOGAM(2) Implantation Large size detectors (100x100mm2, 128+128 channels) High resolution : 20 keV @ 8 MeV (FWHM) Implantation decay sequence : Ability to detect large (> 50MeV) pulse quickly (≈ 10µs) followed by a weak (<15MeV) pulse. No dead time to detect short lived decay chains. Front-end electronic (large & high resolution PA) Back-end electronic & DAQ (triggerless, digital processing) R&D phase until mid 2012 Comparison & tests of existing solution and R&D possibilities (Discrete or ASIC solution)

GET for Tracking Detectors 201x138 mm2 68+47 strips +2 time signals From F. Druillole, CEA Saclay for the GET collaboration

Implantation-decay spectroscopy station CSNSM, IPHC, Irfu, GANIL TOF: Emissive foil detectors Large size (200x100mm2) Very low thickness Time resolution < 1ns Si Tunnel Large size (60x100mm2) Conversion electrons FWHM < 5 keV And escaped alpha FWHM < 15 keV Gamma detection First Step  use of EXOGAM(2) Implantation Large size detectors (100x100mm2, 128+128 channels) High resolution : 20 keV @ 8 MeV (FWHM) Implantation decay sequence : Ability to detect large (> 50MeV) pulse quickly (≈ 10µs) followed by a weak (<15MeV) pulse. No dead time to detect short lived decay chains. Front-end electronic (large & high resolution PA) Back-end electronic & DAQ (triggerless, digital processing)

FEE Option : Bigain Pole Zero Classic bigain solution BiPZ Pole Zero is forced to high frequency:  TPZ replaces RfCf and is higher (x10) Pile-up of small signal on low signal  minimize RfCf BUT : Cf constrained by dynamics (>4pF) Rf limited by noise >~1 MΩ (5.7keV @1μs)  RfCf >4μs too long for 10µs decays 5MeV pulse 10µs after 200MeV simulations show 5-8keV resolution linar pulses ✖ requires 2 ADC channels From E. Delagnes, CEA Saclay

FEE Option: Floating point charge amp. Principe of the double gain CSA High gain ~ 100keV to 15MeV (15keV FWHM) Low gain ~ 10MeV to 500MeV (1% FWHM) 44.4 mV/MeV (Cf=1pF) Requires 1 ADC channel Reasonable noise (7.2keV/23keV) and INL ASIC technology digital processing of LG 2.1 mV/MeV (Cf=21pF) From Ph. Vallerand, Ganil, (see Talk at ANSiP 2011) in collaboration with CEA Saclay

FEE Option: digital Feed back preamplifier Requires 1 ADC channel Digital processing required (NL) Requires 1 DAC / channel 150MeV followed by 5MeV after 25µs 5µs/div 500ns/div From N. Karkour (CSNSM Orsay) in collaboration with Ganil

BEE Option: 16 ch. [ADC+DAC] modules Compatibility with Digital feedback for compensated Preamplifier SAMPLING CLOCK ANALOG CORRECTION OUTPUT FPGA (AMC) SRAM MEMORY DAC ANALOG INPUT ADC FIXED GAIN AMPLIFIER DAUGHTER BOARD N CHANNELS V1724 Based on CAEN V1724  Existing mother board, FPGA and SRAM 16ADC (14bits, 100MHz) + 16DAC per module Requires VHDL programming Compatible with GTS Ganil Electronics and Run control to be implemented Option : 32 ADC channel module From N. Karkour (CSNSM Orsay)

BEE Option: 8 ch. NUMEXO2 modules Developed by Ganil specific data processing requested Hardware modifications depends on FEE ADC Logic - FADC samples collection Digital Processing Trigger Data formatting Inspection control PPC Common Logic GTS Fanin ADC Logic Interface Clocks (Local & Recovered) Delay Line Optical Link Flash (Linux) PROM (VHDL) Ethernet Gigabit PCIe (4 Lane) DACs (Test, control, inspection) Serial link DDR2 Mux 2*FADC 2 ch 14 bits 200MHz FIFO -------- RAW DATA (event parameters) Samples Digital processing adaptation 4 x Compatible with Floating Point ASIC preamplifier Fully integrated to Ganil Acquisiton and control system, GTS compatible

Conclusions Implantation decay station developed for S3 GET electronics for tracking detectors Studies for Implantation detector Issue : high implantation followed by small decay signals FEE Options BiGain Pole Zero discrete preamplifier Floating point ASIC preamplifier Digital Feedback Compensated Preamplifier BEE Options 16ACD+16DAC for DFCPa (based on CAEN V1724) 8 channels NUMEXO2 digitizers (Very comparable technical performances) Comparison under way (mid 2012) Goal : ready for 2015