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STATION NEWS
New Instrument on ISS to Study Ultra-Cold Quantum Gases
by Tomasz Nowakowski for AstroWatch
Los Angeles CA (SPX) Oct 21, 2016


CAL is currently scheduled to be launched to ISS by SpaceX's Falcon 9 rocket in June 2017.

A new science instrument, slated to be installed onboard the International Space Station (ISS) in late 2017, is expected to yield interesting results regarding quantum phenomena. The Cold Atom Laboratory, or CAL, will study degenerate quantum gases in the microgravity environment of the orbital outpost.

The compact, atom-chip based instrument will be capable of trapping such elements like Rubidium and Potassium and of producing degenerate gases of each species, after a few seconds of collection and cooling.

It will allow the scientists to create a state of matter called a Bose Einstein Condensate (BEC). This state can be achieved by cooling a gas of extremely low density, about one-hundred-thousandth the density of normal air, to ultra-low temperatures - lower than those that are created in laboratories on Earth.

"CAL is a multi-user facility to study ultra-cold atoms - below a billionth of a degree above absolute zero. Microgravity allows scientists to observe cold atoms floating unconfined for long periods of time allowing highly precise measurements of very weak forces," Rob Thompson, CAL Project Scientist at NASA's Jet Propulsion Laboratory (JPL), told Astrowatch.net.

CAL is currently scheduled to be launched to ISS by SpaceX's Falcon 9 rocket in June 2017. However, due to a recent launch pad explosion on Sept. 3, when both the Falcon 9 and the Amos-6 satellite were destroyed two days prior to scheduled liftoff, CAL's flight into space could be delayed. Moreover, it is also being considered that the instrument could be launched by Orbital ATK instead of SpaceX.

After the arrival of CAL at the ISS, it will be installed by astronauts into the EXpedite the PRocessing of Experiments to Space Station (EXPRESS) rack inside the station's Destiny module, that will provide standardized power, data, thermal, and mechanical interface to the new facility. Due to its size and power requirements, CAL will occupy a quad locker space in the rack.

"CAL will be installed into the ISS EXPRESS locker, where it takes up the equivalent of five lockers - a quad locker and a separate locker. Mass is around 452 lbs. (205 kilograms) for the quad locker and 137 lbs. (62 kilograms) for the single one," Thompson said.

Once installed, the instrument will be operated remotely from the ground via sequence control, thus there will be no need for further astronaut involvement.

The main goal of CAL is to study ultra-cold quantum gases in the microgravity environment. The instrument will investigate Rubidium and Potassium isotopes and interactions between mixtures of these isotopes.

The facility is designed for use by multiple scientific investigators and to be upgradable and also maintainable on orbit. CAL is also perceived as a pathfinder experiment for future quantum sensors based on laser cooled atoms.

"CAL will be making several exciting Principal Investigator-Led (PI-led) specific investigations, in such areas as tests of general relativity, the physics of few-body collisions, and studies of novel spherical quantum bubble geometry condensates," Thompson revealed.

"In addition, CAL will serve as a pathfinder for future experiments with cold atoms, which have great promise for both practical and research applications, such as tests of fundamental physics, searches for gravitational waves, better atomic clocks, space navigation, and monitoring effects of climate change," he added.

CAL's initial mission is expected to last one year, with a possible extension for further five years. Upgrades to the facility are also being considered. Additional features could include new laser modules, new electronic components, or a new physics package.

.


Related Links
The Cold Atom Laboratory
Station at NASA
Station and More at Roscosmos
S.P. Korolev RSC Energia
Watch NASA TV via Space.TV
Space Station News at Space-Travel.Com






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Miami (AFP) Oct 11, 2016
The next US cargo supply trip to the International Space Station has been postponed until Sunday due to Hurricane Nicole, which is bearing down on Bermuda, NASA said Tuesday. Initially set for Thursday, Orbital ATK will now launch its unmanned Cygnus cargo ship no earlier than Sunday from Wallops Island, Virginia, the US space agency said. Nicole is expected to reach Bermuda on Thursday, ... read more


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