BAKEOUT facility

Facility objectives

Installation BAKEOUT en salle MESPAL

Photo J. Parisot - janv 2019
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The BAKEOUT installation has the following purposes:

• Outgas components under vacuum within the temperature range [21; 160]°C

• Measure the outgas level by the use of a TQCM microbalance, in conformity with the norms ECSS-Q-TM-70-01C of ESA and ASTM-E595 of the NASA.

The bakeout installation is located in an air-conditioned test room equipped with a mobile laminar flow hood (class ISO 5).

The update of the bake-out chamber has been developed for the MEB/RPW instrument of theSolar Orbiter mission.

The installation has been designed with the idea to be used for other projects. It has been used since then to measure the outgas levels of the following instruments:

• RPW / Solar Orbiter : bake-out of the harnesses, MEB-PFM, SCM (2017)

• XGRE / TARANIS : bake-out of 3 flight models and the MGSE

• PAS / Solar Orbiter : bake-out of flight model & flight spare of the electronic cards

• SUPERCAM Mast Unit / MARS2020 : all the components of the EQM, FM1, FM2 and FS models.

TQCM - Installation BAKEOUT

Photo J. Parisot - Juin 2016
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Description of the installation

The installation contains :

• A vacuum chamber (paralepidid) with a volume of about 50l
  • The chamber can be equipped with multiple shelves ;
  • The back part contains the essential part of the junctions (pumping, cryogenic cold trap, TQCM balance and electric cable feedthrough) ;

• A pumping system (primary + secondary) build out of :
  • A primary pumping group, dry, with a Roots level ;
  • A turbomolecular pump ;

• A 2 stage cryogenerator ;

• Multiple security devices for heating of which one autonomous system based on a contact opening thermostat ;

• A control/command system for the pumping, temperature regulations during heating and TQCM microbalance steering (real time analysis of success criteria).

The steering interface is programmed under LabVIEW.

The complete automatization of the installation has been renovated mid-2018.

Bake-out SuperCam OBOX-FM2

Photo J. Parisot - Janv. 2019
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Bake-out SuperCam MICROPHONE FM

Photo J. Parisot - Fév. 2018
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Technical characteristics of the installation