Curation

Facility

Clean Room
  • A clean room is a room that reduces suspended dust by circulating air through an air filter (HEPA). According to ISO and other standards, cleanliness is classified according to the size and amount of suspended dust. Clean rooms of Extraterrestrial Sample Curation Center (ESCuC) are in classes 1,000 and 10,000. Not only does it reduce floating dust, but it also controls temperature and humidity (Room temperature 22 ± 2 ° C, humidity 50 ± 10%). Maintaining room temperature stabilizes equipment and keeping humidity high reduces the adhesion of floating dust due to charging. In addition, the room pressure of the clean room is kept higher than outside (10 pascals or more) to prevent dust from entering from outside.*Class 100 means that a volume of one cubic foot contains less than 100 suspended particles of diameter 0.5 micrometers or larger, Class 1000 less than 1000, and Class 10,000 less than 10,000. Classes 100, 1000 and 10,000 correspond to the ISO standard classes 5, 6 and 7, respectively.

  • Manufacturing and Cleaning Room (class 10,000)

    A Microtome, an acrylic nitrogen-purged glove box and ultrasonic cleaning baths are installed. There are some small rooms: a room for organic solvent cleaning operations with local exhaust and draft, a room with baking chambers and other cleaning equipment (a CO2 blaster, a plasma cleaner, and an ozone cleaner), and a room with a milling machine for removing the ablator of the return sample capsule.

  • Sample Preparation Room (class 10,000)

    A Field Emission Scanning Electron Microscope (FE-SEM) and a Focused Ion Beam System (FIB) SEM are installed. Some optical microscopes have manipulators for handling small particles. There is a small room for acid and alkali cleaning.

  • Electron Microscope Room (class 1,000)

    A FE-SEM, a Fourier Transform Infrared Spectroscopy (FTIR), a Raman Spectrometer, an X-ray Diffractometer, optical microscopes, an acrylic and a stainless-steel nitrogen-purged glove boxes are installed.

  • Planetary Sample Handling Room 2 (class 1,000)

    The "HAYABUSA2" clean chamber(s) are installed. The floor is a grating structure to prevent dust from rolling up from the floor by walking.

  • Planetary Sample Handling Room (class 1,000)

    The "HAYABUSA" clean chamber(s) and an all-stainless-steel clean bench, free organic substances, are installed. Locally implements class 100 by layout of HEPA filter on the ceiling. Not only HEPA filter but also organic chemical filters are installed to reduce halogen, sulfide, nitride, boron and boron compound in atmosphere. The floor has a grating structure to prevent rubbish from rolling up from the floor by walking.

  • Other Laboratories (not clean room)

    ESCuC has laboratories other than clean rooms and are equipped with analytical instruments such as a SEM, a FIB-SEM and a Transmission Electron Microscope (TEM), as well as instruments for making thin-sections of rocks. In addition, there is a clean booth where microscopic samples can be handled using a microscope and a manipulator.

Clean Chamber
  • Clean chamber here is the name of a vacuum chamber or nitrogen-containing glove box manufactured for the storage and handling of the return samples. The returned samples must be handled in an environment that is isolated from the outside in order to avoid material changes and pollution (contamination) due to the earth's atmosphere and dust. The basic material of the clean chamber is stainless steel (SUS304). The parts facing the room are electrolytic polished. The vacuum chamber has high vacuum performance (1E-8 to 1E-6 Pa), and the nitrogen atmosphere glove box uses high purity nitrogen, which removes oxygen and moisture as much as possible (-80 to -100 degree Celsius, dew point). There are clean chambers for "HAYABUSA" and "HAYABUSA2" with 2 and 5 connected clean chambers respectively.

  • Clean Chamber 1 (CC1)

    "HAYABUSA" sample container was introduced and the cover was opened in a vacuum atmosphere. A microscope with a long working distance has been equipped, and the inside of the container was observed after opening. The sample containers are still being stored in a vacuum atmosphere. After the sample catcher was removed from the container, sample was stored stably in a nitrogen atmosphere.

  • Clean Chamber 2 (CC2)

    CC2 is a glove box with pure nitrogen atmosphere connected to CC1. It is used for handling the Itokawa sample, and a microscope and an electrostatic control manipulator are equipped in the room. Although it has not been used in practice, it has various functions such as connection to a microbalance and a mechanism to seal the sample in a quartz ampoule so that various responses can be made when the sample is received.

  • Clean Chamber 3-1 and 3-2 (CC3-1 and CC3-2)

    CC3-1 features for introducing the "HAYABUSA2" sample container and opening it in a vacuum environment. CC3-2 has a function of collecting some particles of the sample from the sample catcher in a vacuum environment. The chambers are operated in a vacuum atmosphere using linear motion manipulators and transfer rods.

  • Clean Chamber 3-3 (CC3-3)

    CC3-3 is connected to CC3-2, the sample catcher can be received in a vacuum atmosphere. After receiving the catcher, it is treated as a glove box with pure nitrogen atmosphere. The CC3-3 is also connected to a small extended chamber for MicrOmega.

  • Clean Chamber 4-1 and 4-2 (CC4-1 and CC4-2)

    CC4-1 is a pure nitrogen atmosphere glove box connected to CC3-3. The design of CC4-1 was based on CC2, and it is possible to bring a large device into a large room and handle samples. CC4-2 has a large window on the top surface and is suitable for observing samples. Photographing with an optical microscope and weighing are also performed. CC4-2 can be connected to a small chamber for FTIR.

Preparation or Cleaning Tools/Instruments
  • Laser Puller (Model P-2000)

    A device for manufacturing quartz needle of the Electrostatic Control Manipulator.

  • Ultrasonic Cleaner (PhenixII, Quava)

    A device for cleaning sample handling tools. There are several types of cleaning tanks with different frequencies (38 kHz, 950 kHz). Ultrasonic cleaning with pure-water overflowing is available.

  • Dry Ice (CO2) Blast Cleaner (QuickSnow)

    A device for cleaning sample handling tools. Fine particles of dry ice are refined from carbon dioxide gas and sprayed on the surface of the device to repel dust.

  • Atmospheric Pressure Plasma Washer (PlasmaBeam)

    A device for cleaning sample handling tools. The high temperature of the plasma incinerates and removes organic matter on the surface of the tools.

  • UV Ozone Cleaner (UV253S)

    A device for cleaning sample handling tools. Decomposes and removes organic substances on the surface of the tools.

  • Clean Evaporator

    A device for boiling acids and alkalis when tool cleaning work.

  • Fume Hood

    A device for utilizing organic solvent, acid or alkali in cleaning apparatus.

  • Clean Dryer (PC2-1014-DRYER)

    A device for drying tools after washing. Filtered air by HEPA can be blown at high temperature.

  • Vacuumed Baking Chamber (MB07-10020C)

    A device for "baking" tools. When handling tools in a chamber vacuum or in a high-purity nitrogen atmosphere, moisture adhering to the tools surface may evaporate or volatile gas may be released from the material itself, causing sample contamination. To solve these problems, some equipment should be baked at high temperature under vacuum for a long time before it is brought into a clean chamber.

  • Nitrogen Purged Desiccator

    A container for storing sample handling tools under nitrogen atmosphere.

Equipment for Sample Handling Environment
  • Nitrogen Purged, Stainless Steel, Glove Box
  • Nitrogen Purged, acrylic, Glove Box
  • Clean Bench (VS1305LS)

    A clean bench with HEPA filter and is made of stainless steel to reduce organic matters contamination.

Analysis Equipment
  • Field-Emission Scanning Electron Microscope (FE-SEM), Energy Dispersive X-ray Spectroscopy (EDS), Electron Backscatter Diffraction (EBSD) (S-4300SE/N, SU6600)

    There are two SEM with EDSs in the clean room. They are used for the Initial Description of the returned sample. These sample exchange rooms were arranged to exchange samples under high-purity nitrogen environment and sealed sample container can be opened.

  • X-ray Diffraction Analyzer (XRD, RINT Rapid 191R)
  • Infrared microscope + Fourier Transform Infrared Spectrometer (FTIR, IRT-5000 + FTIR 6100)
  • Laser Raman Spectroscopy (NRS-5100)
  • Transmission Electron Microscope (TEM, JEM-1400Plus)
  • Triple Beam FIB-SEM-Ar Combined System (FIB-SEM, NX2000)
  • Ultra-Microtome (EM UC7)
Analysis Equipment on the Clean Chambers
  • Near-IR Hyperspectral Microscope (MicrOmega)

    Apparatus for infrared spectroscopic analysis of the Ryugu sample in the clean chamber. An extended chamber mounting MicrOmega can be connected to CC3-3. It is expected that the analytical results of the Ryugu surface by the probe "HAYABUSA2" will be compared with the analytical results of the returned sample by this device. This apparatus was installed with cooperation with IAS team, France.

  • Infrared microscope + Fourier Transform Infrared Spectrometer (FTIR)

    Apparatus for infrared spectroscopic analysis of the Ryugu sample in the clean chamber. An extended chamber mounting FTIR can be connected to CC4-2. It is expected that the analytical results of the Ryugu surface by the probe "HAYABUSA2" will be compared with the analytical results of the returned sample by this device.

  • Atmospheric Pressure Ionization Mass Spectrometer (API-MS, UG-510P/APIMS-200)

    Apparatus for evaluating environment of atmosphere in the clean chamber. There are two units for "HAYABUSA" and "HAYABUSA2." It can detect mass numbers from 3 to 200 with high sensitivity, and measures mainly water, oxygen, carbon dioxide and methane gas at ppb (parts-per-billion) level.

Other Instruments
  • Isotope Ratio Mass Spectrometer (IR-MS, DELTA V ADVANTAGE)

    Stable isotope ratio mass spectrometer capable of highly accurate analysis of hydrogen, nitrogen, oxygen and carbon dioxide. ASRG is studying the development of a device capable of analyzing the isotopic ratio of the extraterrestrial atmosphere with high sensitivity as a device mounted on a planetary probe.

  • Multi-Turn Time of Flight Mass Spectrometer (MULTUM, infiTOF-ISO2)

    A small, desktop size, mass spectrometer. Since equipment to be mounted on the probe needs to be small, ASRG aim to develop a high-sensitivity compact mass spectrometer.