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Published byCecil Reed Modified over 6 years ago
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Surface Concept Position Sensitive MCP Detectors Novel Solutions A
Surface Concept Position Sensitive MCP Detectors Novel Solutions A. Multi-Segment Detectors
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Position sensitive 4 Quadrant DLD layouts
Multi-hit 2D/3D 4-fold delay line detector Up to 4 multi hits with absolutely zero dead time Up to 400 multi hits per 1 µs Burst rates above 100 MCPS equivalent 60 x 60 mm² (or 80 x 80 mm²) active area of DLD body and 80 mm active MCP area Down to 30 µm of pixel size < 250 ps over all time resolution Linear response due to single event counting Extremely low dark count rate: 0.2 cps/ cm² Up to 40 MCPS random hit rate in 2D/3D mode Position sensitive 4 Quadrant DLD layouts 3D-DLD4040-4Q (80 mm diameter) and 3D-DLD3030-4Q (60 mm diameter): 4 fold segmented DLD using 4 independent DLD readout systems in parallel each segment has low dead times (15 ns DLD4040-4Q / 9 ns DLD3030-4Q)
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256 Multi-Lines at the MCP anode as separated 1D-Delay Lines
Single particle detectors but > 100 Multihits by means of multiline MCP detectors!!! The logical consequence: 256 fold multi-line delay line detectors where as each line is working separately: multi hit capability will exceed 100 when each 1D-delay line can detect double hits! Callenging Project of Surface Concept in collaboration with CFEL at European XFEL in Hamburg: 256 Multi-Lines at the MCP anode as separated 1D-Delay Lines
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Readout Principle of a 64 fold Multi-line Delay Line Detector
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The Delay-Cluster-Anode-Detector DCA4020
2D delay line based electron detector for very high multi-hit number recognition (FEL optimized detector) 9 Energy Channels on 40 mm length 16 Angle Slices on 20 mm Up to 140 parallel hits recognizable Dead time after multi-hit flash < 100 ns >1000 time slices for micro-bunch assignments Features / Specifications Features / Specifications 3D(x,y,t) detector with enhanced multi-hit cap. CF150 mounting flange active area of DCA anode: 40 mm x 20 mm active MCP diameter: 40 mm 1 typ. single anode size: 1.2 mm x 4 mm, 16 x 9 array typ. time resolution: 500ps, linear response due to single event counting2 extremely low dark count rate: typ. < 0.2 counts per second per cm^2 max. random countrate > 15 Mcps in 2D/ 3D mode hardware handshake exposure feature for FEL structure synchronization
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Layout of the 16x9 multi-pad claster anode:
each line: 9 pads connected by 7 ns delays (8 in one row) 16 delay lines which are read in separately, 16 vacuum feedthroughs 16 amplifiers / discriminators 16 channel time sequencer (TDC) with trigger for bunch structure 16 x 8 delays of 7 ns integrated into detector anode in vacuum 16 16 x Amplifier - Pulse – Processing USB 2.0 16 channel Time Sequencer And Trigger Unit PC Trigger from/ to FEL
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Surface Concept Position Sensitive MCP Detectors Special Solutions B
Surface Concept Position Sensitive MCP Detectors Special Solutions B. MCP Detectors with Phosphor Screen
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