![Andor Technology Neo sCMOS Скачать руководство пользователя страница 25](http://html1.mh-extra.com/html/andor-technology/neo-scmos/neo-scmos_hardware-manual_2942425025.webp)
FEATURES & FUNCTIONALITY
Neo
SECTION 2
Page 25
2.2.1 - Ultravac™
A high performance scientific sensor must be housed in a hermetically sealed vacuum head with minimized out-
gassing, otherwise both cooling performance and the sensor QE itself will degrade. Andor’s UltraVac™ vacuum
process was designed not only to facilitate deep TE cooling, but also to provide absolute protection of the
exposed sensor and to allow use of only a single input window, maximizing photon throughput to the sensor.
Unless protected, cooled sensors will condense moisture, hydrocarbons and other gas contaminants. Such
contaminants are particularly damaging towards the detecting surface of back-illuminated sensors. Exposed to
such out-gassed contaminants, the Quantum Efficiency of a sensor will decline proportionally. Furthermore, the
sensor can fail if excessive condensation forms. It was these compelling reasons that drove Andor to develop
permanent vacuum technology > 15 years ago. Andor have indeed perfected a proprietary Permanent Vacuum
Head, essential not only to optimize cooling performance, but also to ensure that the sensor is protected and
that this performance is retained year after year. Only Andor have shipped thousands of vacuum systems,
enabling us to unequivocally substantiate our longevity claims with real reliability data.
Figure 5: Schematic of a Permanent Vacuum Head
Benefits of Permanent Vacuum Head:
•
Sustained vacuum performance over many years operation – proprietary process to minimize out-gassing.
Peak QE and cooling will not degrade
•
Performance improves because the temperature of the chip can be reduced significantly. Better cooling
(down to -40°C with an enhanced thermo-electric peltier design) translates into substantially lower dark
current and fewer blemishes
•
Elimination of condensation and out-gassing means that the system can use only a single entrance
window, with double antireflection coating – you can believe the QE curve!
•
Prevent convection heat transport from the front window which would otherwise lead to condensation on
the outside window
Содержание Neo sCMOS
Страница 8: ...TABLE OF CONTENTS sCMOS TABLE OF CONTENTS Page 8 PAGE SECTION 6 TROUBLESHOOTING 77...
Страница 17: ...INTRODUCTION Neo SECTION 1 Page 17 1 5 1 Mechanical drawings...
Страница 79: ...APPENDIX Neo APPENDIX Page 79 APPENDIX A1 DECLARATION OF CONFORMITY...
Страница 80: ...APPENDIX Neo APPENDIX Page 80...