RAD The Radiation Assessment Detector for MSL RAD

RAD – The Radiation Assessment Detector for MSL/RAD Critical Design Review 7 b – RAD Sensor Head Stephan Böttcher boettcher@physik. uni-kiel. de Stephan Böttcher, CAU Kiel

RAD Front-End-Electronics RAD – The Radiation Assessment Detector for MSL • RAD Front-End-Electronics – Functional Description – Dynamic Range Requirement – Photos • First Results from the Pathfinder – Cosmic muons 2 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

FEE Overview RAD – The Radiation Assessment Detector for MSL • PIN Silicon Detectors · · · 300µm Anti-Refective Coating Flex strips, ceramic carriers • PCB · · 0. 5 mm / 1 mm PI glass 2 / 4 Layers • Rigid-Flex interconnect · · · PI film/PI glass Bi-Lobe connectors REB interface connector • Internal wireing · · AWG 32, 19 -strand, PTFE 0. 8 mm coax, PTFE, 7 -strand AWG 34 core 3 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Requirements RAD – The Radiation Assessment Detector for MSL • Amplification of charge signals from Si Detectors · Charged particles going through Si detectors · Scintillation light in Cs. I(Tl) · Scintillation light in BC 432 m • Conditioning of the Signals for the VIRENA ASIC · Shaper with 2. 2µs shaping time · Pole-zero compensation of CSA secondary time constant · Output signal amplitudes from 4. 5 m. V to 3 V • Dynamic Range · Various cases 4 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

CSA schematics RAD – The Radiation Assessment Detector for MSL • BF 862 j. FET · · very low noise · · SOT 23 plastic part good match to detector capacitance 3. 7 m. A bias current • AD 8005 CFA · · · 4 m. W Power current feedback SOT 23 -5 plastic part • Various gain options: · · 1 p. F. . 8. 2 p. F 100µs. . 260 µs 5 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RADD board on Cs. I RAD – The Radiation Assessment Detector for MSL RADD board (low gain, 8. 2 p. F) Charge Sensitive Preamp on Cs. I Two PEM parts: BF 862, AD 8005 6 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Shaper schematics RAD – The Radiation Assessment Detector for MSL • AD 8005 CFA • 2. 2µs time constant • Pole-Zero compensation 7 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Telescope FOV RAD – The Radiation Assessment Detector for MSL A • Three Solid State Detectors: A, B, and C B C D F · · · Det A 1: inner two hexagonal segments Det A 2: outer four segments Det B: only innermost segment Det C: two inner segments AC Det C 2: two segments from B, one from C AC readout F 1: outer segment(s) of C 8 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RSH FEE Block-Diagram RAD – The Radiation Assessment Detector for MSL • • 17 preamps 17 shapers 3 thermistors Power: · opamp power +5 V, -5 V · +5 V FET bias · -70 V Detector bias • Interface connector · MDM 51 9 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Dynamic Range Telescope RAD – The Radiation Assessment Detector for MSL • From Minimally Ionizing Particles (MIPs) to Stopping Iron · MIP in 300µm Si (Landau distribution) · · peak at 95 ke. V, · · starting at 60 ke. V, mean at 115 ke. V. Stopping Iron Ion in 300µm Si: · · 1. 2 Ge. V Dynamic Range: 20000 • AD 8005: 3 V output signal • Two shapers for each signal, high and low gain. • Si detector charge yield: 44 m. V*p. F/Me. V 10 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Dynamic Range Cs. I(Tl) RAD – The Radiation Assessment Detector for MSL • From Nuclear Gamma Lines to Stopping Iron · Gamma lines: A few hundred ke. V · MIPs: 25 Me. V · Stopping Iron Ion in 3 cm Cs. I: 20 Ge. V · Dynamic Range: 100000 • Three seperate PIN detectors reading light from Cs. I at different gains. • Cs. I(Tl) Light charge yield: 1. . 2 m. V*p. F/Me. V. • Quenching factors for ions unknow, > 5. 11 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Dynamic Range Neutron Channel RAD – The Radiation Assessment Detector for MSL • Neutron signals from 2 Me. V to 200 Me. V • Relativistic Ions • Three seperate PIN detectors reading light from BC 432 m Neutron Channel at different gains. • BC 432 m light charge yield: 0. 4 m. V*p. F/Me. V • Quenching factors for ions unknow. 12 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Dynamic Range Anticoincidence RAD – The Radiation Assessment Detector for MSL • Efficient detection of MIPs in BC 432 m Anticoincidence · MIPs in 12 mm BC 432 m (Landau) · starting at 1 Me. V, · mean at 2. 4 Me. V • Three seperate PIN detectors and three outer segments of C-detector reading light from Cs. I • Two shapers reading the sum of three CSA each. • BC 432 m light charge yield: 0. 4 m. V*p. F/Me. V 13 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RSH Channels Summary RAD – The Radiation Assessment Detector for MSL 14 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RADA board RAD – The Radiation Assessment Detector for MSL • Top SSD readout • circuits: · 2 CSAs · A 1 · A 2 · 4 shapers · A 1 H, A 1 L · A 2 H, A 2 L · Thermistor • 4 layers • parts on 2 sides 15 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RADBC board RAD – The Radiation Assessment Detector for MSL • B&C SSD readout • circuits: · 6 CSAs · B, C · C 2 · F 1 a, F 1 b, F 1 c · 6 shapers · BH, BL, CH, CL · C 2, F 1 • 4 layers • parts on 2 sides 16 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RADE board RAD – The Radiation Assessment Detector for MSL • Neutron channel readout • circuits: · 3 CSAs · EH, EM, EL · 3 shapers · EH, EM, EL • 4 layers • parts on 1 side 17 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RADF board RAD – The Radiation Assessment Detector for MSL • D shapers • F 2 readout • circuits: · 3 CSAs · F 2 a, F 2 b, F 2 c · 4 shapers · DH, DM, DL · F 2 • RADF flight layout is in progress. • Tflex layout is in progress. 18 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

RSH test at CAU Kiel RAD – The Radiation Assessment Detector for MSL 19 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Cosmic muons in the Telescope RAD – The Radiation Assessment Detector for MSL • Selection: · Signal in B · Signal in C · Signal in D • Detector Area: · · A 1: 2. 3 cm 2 A 2: 10 cm 2 20 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Cosmic muons in the Scintillators RAD – The Radiation Assessment Detector for MSL • Selection: · · Signal in C · Signal in A 1 · • Signal in B no Signal in A 2 for EH: · • Signal in DH for F 2 · Signal in EH 21 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Backup Slides RAD – The Radiation Assessment Detector for MSL • Boardhouse • 207 Bi Spectra 22 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Boardhouse RAD – The Radiation Assessment Detector for MSL The Hans Brockstedt Gmb. H is certificated according to DIN EN ISO 9001, MIL-PRF-55110 and MIL-P-50884 since 1992. In addition we are the first European PCB manufacturer, who is certificated acc. to the new MIL-PRF 31032/1/2/3/4 for the production line as well as for the laboratory. The first night was held by the American DESQ and the German VDE in summer 2002. http: //www. brockstedt. de 23 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Conversion Electrons in Detectors A and B RAD – The Radiation Assessment Detector for MSL • 207 Bi Source · · • e-: 480 ke. V, 975 ke. V : 570 ke. V, 1064 ke. V 1 Me. V e- have low probability to stop in 300µm Si, but some do. • Some e- stop in B: lines of constant sum in the scatterplot. 24 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Conversion Electrons in Detectors A, B and C RAD – The Radiation Assessment Detector for MSL • Spectrum of A+B • Some e- stop in C. 25 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Conversion Electrons in Detectors A, B, C and D RAD – The Radiation Assessment Detector for MSL • Spectrum of A+B + C • The remaining e- stop in D. 26 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

Silicon Hit Detection RAD – The Radiation Assessment Detector for MSL • Selection: · DH > 15 m. V • DL gain · 1/64 of DH gain. • Cs. I Light · DL > 1 m. V 27 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel

207 Bi gamma Spectum in Cs. I RAD – The Radiation Assessment Detector for MSL • Selection: · · DH > 15 m. V DL > 1 m. V 28 March 20, 2007 RSH Front-End-Electronics Stephan Böttcher, CAU Kiel