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NUADU

Logo of Double Star (<i>Shuang Xing</i>) project.
 Logo of NUADU project.
 Orbits of the Double Star satellites.
 Satellites TC-1 and TC-2 in space. Artistic fiction: CSSAR/CNSA
 TC-2, 3D-model
 Origin of Energetic Neutral Atoms in magnetosphere.
NUADU - Engineering Qualification Model (EQM).
 Functional Block Diagram.
 NUADU in space (Artistic fiction).
 Sensor System.
 High Voltage Deflector.
 One of sixteen semiconductor detectors (CANBERRA-PIPS, custom design).
 Installation of the detectors and the heaters (to be activated in eclipse).
 Integration of the Sensor Head.
 Electronic modules are interconnected by a motherboard. There are almost no cables in the device.
 Data Processin Unit pc-board. The MIL-STD-1553B hybrid interface is protected against the space radiation by a tantalum shield.
 Power Distribution pc-board.
 Pre-calibration with a standard detector and the Am241 radioisotope.
 Laboratory hardware integration and testing.
The Optical-Solar Reflector efficiently reflects the sunlight and radiates the heat towards the space background. The balanced temperature about -15C is necessary for good detector noise performance.
Software integration/debugging with the TC-2 telemetry system (CSSAR-Beijing).
Software integration - the status and operation is monitored via graphic interface(CSSAR-Beijing).
Data and Command flow between the instrument and the telemetry is carefully monitored by an integration team.
 Over the technical documentation...
 Qualification tests: Vibration - acceleration (KFKI-Budapest).
Qualification tests: Impact test 600g (CSSAR-Beijing).
Qualification tests: Electro-Magnetic Compatibility (CSSAR-Beijing).
Qualification tests: Magnetostatic test (CAST-Beijing).
Qualification tests: Thermal-Vacuum test in the space simulator (IRF-Kiruna, Sweden).
Qualification tests: Thermal-Vacuum test in the space simulator (IRF-Kiruna, Sweden). Location of the temperature sensors.
 Calibration with an energetic neutral atom beam at Manne Siegbahn Laboratory, Stockholm, Sweden. Installation of the sensor head on a high-vacuum manipulator.
Calibration with an energetic neutral atom beam at Manne Siegbahn Laboratory, Stockholm, Sweden. Insertion of the sensor head into the vacuum chamber.
Calibration with an energetic neutral atom beam at Manne Siegbahn Laboratory, Stockholm, Sweden. Hermetization and pumping to 10<sup>-7</sup>mBar.
Calibration with an energetic neutral atom beam at Manne Siegbahn Laboratory, Stockholm, Sweden. Manipulation of the sensor head to expose all 16 detectors with ENA beam.
Calibration team at Manne Siegbahn Laboratory, Stockholm, Sweden.
Installation of Multilayer thermal insulation (CAST-Beijing).
 First installation of the device on the Double Star/TC-2 instrument platform (CAST-Beijing).
 Interior of the satellite. The NUADU electonic box is located top-left. Photo: Mu/CSSAR
 Launch campaign at spaceport TSLC (Taiyuan Satellite Launch Center).
Launch campaign at spaceport TSLC (Taiyuan Satellite Launch Center).
 Only Sensor Head protrudes to the open space. Being thermally decoupled, it operates in independent temperature regime.
 Replacement of unreliable detector.
The dice are tossed ! <i>(Alea Iacta Est)</i>. The last inspection of the payload is over.
Integration of the satellite with 3rd stage of the LM-2C launcher. Photo: Mu/CSSAR
 Uncovered input apertures immediately before the fairing installation.
The fairing protects the satellite upto altitude of 120 km, it is jettisoned after three flight minutes. Photo: Mu/CSSAR
 Transport of the satellite from the labs to the launch tower.
The fairing covers the satellite together with the LM-2C solid-fuel 3rd stage.
 Hoist to the launch tower.
 Integration of the satellite with Long March(Chang Zheng) 2C/SM, that is still hidden in the closed service boxes.
 Last minutes before the launch. Photo: Mu/CSSAR
Space launch is particularly attractive for children.
 Fire!  25.7.2004 / 07:05 UTC (local time 15:05), Photo: Mu/CSSAR
 Long March 2C/SM is the most reliable Chinese space launcher. Photo: Mu/CSSAR
The Yungang grottoes on the half way from TSLC to Beijing could not be missed by the launch participants.
 Banquette after the successful launch of TC-2.
 Appreciation letter from Chinese National Space Agency and European Space Agency (Jan Balaz).
 Appreciation letter from Chinese National Space Agency and European Space Agency (Igor Strharsky).
 First Housekeeping Data from the orbit.
 First Science Data from the orbit.
 NUADU detects Energetic Neutral Atoms from southern auroral oval, above Antartica. Animation: JHU-APL
 Right: Magnetospheric ring current as recorded by NUADU during extraordinary strong geomagnetic storm in November 2004. Courtesy STIL & JHU-APL<br>Left: Stormy Sun on November 8 (image SOHO) and the Dst index plot of November 2004 (Kyoto University).
 
 


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