Towards Large Area, Picosecond-Level Photodetectors - Capp.iit.edu

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Glass Capillary Substrate Development Borosilicate glass capillary substrates from Incom, Inc. (Charlton, MA, USA) Technology development on 32.8mm diameter disk substrates – 20μm (L/D=60) & 40μm (L/D=40) pore size 20cm × 20cm plates for working detector (18) 40μm pore substrates delivered (35) 20μm pore substrates delivered Baseline is 20μm pore All substrate pores have 8˚ bias w.r.t axis ⊥ to substrate Used in pair chevron configuration to reduce positive ion feedback damage to photocathode Friday, November 18, 2011 substrate detail 2010 photo credit: Jason McPhate, SSL Towards Large Area MCP Photodetectors, R. Wagner, Argonne, Antiproton Physics Workshop, Fermilab, 20111118 20cm × 20 cm glass substrates October, 2011 photo credit: Joe Gregar, Argonne substrate detail August, 2011 6
Advances in Glass Capillary Array Development 1st Batch vs. Present Batch 20µm pores Multifiber stacking evident Triple point gaps Pore crushing at multifiber boundaries Triple point gaps eliminated Minimal pore distortion Still some stacking issues Friday, November 18, 2011 >?@A-"* 82 "B8"(
Page 1 and 2: Friday, November 18, 2011 Developme
Page 3: MCP-PMT Module & Readout Concept 2
Page 8 and 9: F>;00'@%$!"&FE';&5'0">"#%&'D;@)$'($
Page 10 and 11: Pore Activation via Atomic Layer De
Page 12 and 13: Secondary Emissive Materials Charac
Page 14 and 15: MCP Testing at Argonne -- APS UV La
Page 16 and 17: MCP Testing at Argonne -- “Mock T
Page 18 and 19: First Pulse Measurements with 8”
Page 20 and 21: MCP Testing at Space Sciences Lab (
Page 22 and 23: Argonne ALD MCP Pair Background Tes
Page 24 and 25: !!""#$%&'()*#*+,-./0121./1/3#4,525#
Page 26 and 27: Demountable 8” Tile Prototype Lea
Page 28 and 29: 8.7” Photocathode & Seal Test Cha
Page 30 and 31: Bialkali Photocathode Development a
Page 32 and 33: !"#$%&'%()"*+(,%+--,#%.$#/($/#,%"-0
Page 34 and 35: Friday, November 18, 2011 BACKUP SL
Page 36 and 37: Scale-up to Large Surface Area Proc
Page 38 and 39: 8”×8” MCP Plate Testing at SSL
Page 40 and 41: Mock Tile Fabrication ‣ Short-cut
Page 42 and 43: Anode Ceramic Body Design -- SSL Va
Page 44: General procedures for Fabrication

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