NVT capillary collimator NORTH NIGHT VISION TECHNOLOGY CO., LTD Xu Zhao NORTH NIGHT VISION TECHNOLOGY CO., LTD Mar. 21, 2017

Contents 1 2 3 4 Introduction of NVT Engineering Capacity Technical Progress of Collimator 4 Development Plan

1. Introduction of NVT Introduction Core business: low-light-level night vision vacuum devices The only image intensifier manufacturer in China One of five major suppliers of image intensifier in the world Kunming Nanjing branch

1. Introduction of NVT Core business Vacuum image intensifier, large photomultiplier tube, special high voltage power supply, micro channel plate(MCP), fiber optic device.

Micro channel plate(MCP) & Fiber optic device 1. Introduction of NVT Micro channel plate(MCP) & Fiber optic device

Hard X-ray modulation telescope (HXMT) Pore surface roughness 2. Engineering Capacity Hard X-ray modulation telescope (HXMT) China Aerospace Science &Technology Corporation(CASC) Detector: 1 pieces of collimator , 2 pieces of MCPs 8 NVT detectors Parameters Nominal value Pore size 40μm Plate size 100mm×50mm Thickness 1.2mm Open area ratio >60% Pore surface roughness Not required

Einstein probe satellite (EP) Pore surface roughness 2. Engineering Capacity Einstein probe satellite (EP) National Astronomical Observatories of China (NAOC) Micro pore optic (MPO) Engineering samples Parameters Nominal value Pore size 20μm×20μm Plate size 40mm×40mm Thickness 1.25mm Open area ratio >60% Pore surface roughness <1nm Technical progress 2014.6 2015.10 2016.3 2016.8

Production capacity of collimator 2. Engineering Capacity Production capacity of collimator Stages Pieces each year Development stage 300 Engineering stage 500-800

3. Technical Progress Technical specification of collimator Parameters Requirements Measured value Lead-oxide equivalent content ≥37% 39% Pore size 83μm 83.2μm Open area ratio ≥70% 71.1% Plate size 111mm×72.5mm 100mm×50mm Thickness 5mm Pore surface roughness >13nm 5nm Pore to pore alignment ≤1 arc minute 3.4 arc minute Pore to surface alignment 6 arc minute Plate flatness 0.68 arc minute

Production process of collimator 3. Technical Progress Production process of collimator Core fitted to cladding Primary draw Multifiber stack Secondary draw Etch Slice and Polish Stack & Fuse

3. Technical Progress Glass composition XRF results Core and cladding K K Core and cladding XRF K2O PbO Sample 2016 3.2% 39%+50% Sample 2017 0.03% 39% 3.3keV Sample in 2016 Sample in 2017

3. Technical Progress Microstructure Parameters Measured value Multifiber error ±0.005mm Pore size 83μm Open area ratio 71% Multifibers Sample in 2016 Sample in 2017

Pore surface roughness Pore surface roughness 3. Technical Progress Pore surface roughness Sample in 2016 Sample in 2017 Pore surface roughness Measured value Sample 2016 1nm Sample 2017 5nm Large collimator sample

4. Development Plan Future improvements Time Problems to be solved Specifications Related processes 2017 Pore surface roughness ≥13nm Etch & Draw Pore to pore alignment ≤1 arc minute Draw 2018 Pore to surface alignment Fuse & Slice Build a testing system for micro pore structure

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