(updated: 03/16/2010)
Monitoring system of space plasma simulation chamber is designed to watch out these devices: 1 Pirani gauge meter, 1 ionization gauge meter, 3 power supplies for maintaining voltages of acceleration grids in plasma generation, 1 power supply for heating nickel belts in plasma generation, 1 controller for compound turbo molecular pump, a customized Langmuir probe, and a turning table.
- A Pirani gauge meter: 6 analog-ins, ±10 V, 16-bit, 1 kHz.
- An Ionization gauge meter: 2 analog-ins, ±10 V, 16-bit, 1 kHz; 20 digital IOs, SE/DI, ±5V, 1 MHz.
- Thermal couples: 8 analog-ins, ±10 V, 16-bit, 1 kHz.
- A plasma device: 4 analog-ins, ±300 V, 16-bit, 1 kHz. It can be replaced by a multi-functional meter and a multiplexer for high power.
- A power supply for turbo molecular pump: (9+15) digital I/Os, SE/DI, ±5V, 1 MHz.
- Additional two serial ports (9 pins) RS-232/RS422/RS485.
- A turn table: one rotation axis.
| Device |  |
| Manufacturer | National Instruments Corp. |
| Chassis | NI PXI-1042Q Quiet 8-Slot Chassis |
| Function | Monitoring status and conditions of space plasma simulation chamber |
| Input voltage | 100-240 VAC |
| Input frequency | 50-60 Hz |
| Input current | 8 A |
| Power supply | 300 W |
| Operating temperature | 0° to 40°C |
| Dimension | 177 mm D x 271.3 mm W x 396.5 mm H |
| Weight | 8.4 kg |
| Slot 1 | NI PXI-PCIe8361, MXI-Express, 1 Port PCIe, 3 m Cable |
| Slot 2 | NI PXI-6229, M Series DAQ (32 Analog Inputs, 48 Digital I/O, 4 Analog Outputs) with NI-DAQmx driver software 2 x SCC-68 I/O Connector with 4 SCC Module Slots 2 x SHC68-68-EPM Shielded Cable, 68-D-Type to 68 VHDCI Offset, 2 m |
| Slot 3 | NI PXI-4071 7 1/2 Digit FlexDMM (1.8 MS/s Digitizer, 10nV-1000V, 1pA-3A, 2-yr cal) |
| Slot 4 | NI PXI-2584 12-Channel 600V CAT II Multiplexer Connector and Backshell for NI PXI-2584 |
| Slot 5 | PXI-8431/2, 2 Port, RS485/RS422 Serial Interface 2 x RS485 Null-Modem Cable, DB-9 Female to DB-9 Female, 2m |
| Slot 6 | NI PXI-4110 Triple-Output Programmable DC Power Supply with APS-4100 Aux Power or NI PXI-8430/2, 2 Port, RS232 Serial Interface 2 x RS232 Null-Modem Cable, DB-9 Female to DB-9 Female, 2m |
| Slot 7 | NI PXI-GPIB NI-488.2 for Windows Vista/XP/2000 Type X2 double-shielded GPIB cable, 2 m |
| Slot 8 | NI PXI-7344 4-Axis Mid-Range Stepper/Servo Motion Controller 1 x SHC68-C68-S Cable, 2 m 1 x NI UMI-7774 Connector Block |
Functional generator
| Device |  |
| Manufacturer | EZ Digital Co., Ltd. |
| Model | FG-7002C |
| Function | Providing voltage signal to Langmuir probe |
| Input voltage | AC 103~126/206~252V, 50/60 Hz, 15W |
| Dimension | 255 mm D x 255 mm W x 90 mm H |
| Weight | 2 kg |
| Waveforms | Sine, Square, Triangle, Ramp, Pulse, Sawtooth, TTL/CMOS leveled square, and DC |
| Frequency range | 0.02 Hz to 2 MHz in 7 ranges (1, 10, 100, 1K, 10K, 100K, and 1M) |
| Output level | 20 Vp-p in open circuit, 10 Vp-p into 50 load |
| Output impedance | 50±5% |
| Attenuator | 20dB fixed and continuously variable |
Plotter
| Device |  |
| Manufacturer | Rikadenki Co., Ltd. |
| Model | RW-21T |
| Function | Measuring the voltage signal from Langmuir probe |
| Input voltage | AC 100V, 50/60 Hz, 20VA |
| Dimension | 453 mm D x 452 mm W x 78 mm H |
| Weight | 8.7 kg |
| Voltage detection panel | WV-2B |
| Unit | 0.5 mV/cm to 2 V/cm |
Ionization vacuum gauge
| Device |  |
| Manufacturer | ULVAC, Inc. |
| Model | GI-D7 |
| Function | Measuring chamber pressure under high vacuum state and protecting residual gas analyzer from damage |
| Pressure range | 1.3x10-5 ~ 6.7x10-1 Pa for WI-T 1.3x10-6 ~ 1.0x10-2 Pa for WI-B |
| Measurement range | 10-6 ~ 10-1 Pa |
| Measurement accuracy | ±15% |
| Display | Digital indication, 2 digit mantissa, 1 digit exponent |
| Communication | RS-232C (9600/19200/38400 bps) |
| Set point (contact point capacity) | 2 points (AC 100V/0.5A) |
| Recorder output | Linear ouput from 0 to 10 VDC Pseudo-logarithmic output from 0 to 10 VDC (1V linear signal in each digit) |
| Filament protection | Off when 8.0x10-1 Pa for WI-T Off when 2.0x10-1 Pa for WI-B |
| Input voltage | AC 100±10V, 50/60Hz, single phase, 100 VA |
| Dimension | 240 mm D x 350 mm W x 99 mm H |
| Weight | 6 kg | Sensors | WI-T or WI-B |
Turn table
| Device |  |
| Manufacturer | ARK Advanced Technology Co., Inc. |
| Function | Providing rotation motion to sensors in Space Plasma Simulation Chamber |
| Operating pressure | Down to 10-6 Torr |
| Rotation angle | -180° to 180° |
| Angle resolution | 0.1° |
| Maximum rotation speed | 4 rps |
| Payload weight | 20 kg |
| Manual adjust sensor height | ±15 mm |
| Material | SUS304 |
| In-vacuum stepping motor | Oriental Motor |
Optical spectral analyzer
| Device |  |
| Manufacturer | Hamamatsu Photonics K. K. |
| Model | PMA-12 |
| Part number | C10027-01 |
| Function | Diagnosing plasma compositions and reactions inside the Space Plasma Simulation Chamber |
| Spectral range | 200 - 950 nm |
| Resolution | < 2 nm FWHM |
| Sensor type | Cooled back-thinned CCD linear image sensor |
| Number of photosensitivedevice channel | 1024 channels |
| Pixel size | 24 μm x 2.928 mm |
| Device cooling temperature | -15℃ |
| Read-out noise (electrons) | 16 |
| Dark current (electrons/scan) | 75 (-15℃; 20 ms) |
| AD resolution | 16 bits |
| Spectrograph | Czerny-Turner type |
| Spectrograph F number | 4 |
| Sampling rate | Up to 50 complete spectra per second |
| Exposure time | 19 ms to 64 s |
| Easy light input | Optical fiber bundle |
| Fiber receiving area | 1 mm in diameter |
| Fiber type | Bundled fiber SUS tube 12 mm in diameter |
| Fiber length | 1.5 m |
| External trigger input | TTL level / high impedance |
| PMA software | U6039-01 |
| Dimension | 383 mm D x 262 mm W x 99 mm H |
| Interface | USB 2.0 |
| Input voltage | AC 100-240V, 50/60Hz, 70 VA |