Experimental Advanced Superconducting Tokamak
|Major radius||1.85 m|
|Minor Radius||0.45 m|
|Magnetic field||3.5 T|
|Plasma current||1.0 MA|
|Experimental Advanced Superconducting Tokamak|
|Hanyu Pinyin||xiānjìn chāodǎo tuōkǎmǎkè shíyàn zhuāngzhì|
|Literal meaning||Experimental Advanced Superconducting Tokamak|
The Experimental Advanced Superconducting Tokamak (EAST), internal designation HT-7U) is an experimental superconducting tokamak magnetic fusion energy reactor in Hefei, China. The Hefei-based Institute of Plasma Physics is conducting the experiment for the Chinese Academy of Sciences. It has operated since 2006. It was later put under control of Hefei Institutes of Physical Science.
It is the first tokamak to employ superconducting toroidal and poloidal magnets. It aims for plasma pulses of up to 1000 seconds.
The project was proposed in 1996 and approved in 1998. According to a 2003 schedule, buildings and site facilities were to be constructed by 2003. Tokamak assembly was to take place from 2003 through 2005.
Construction was completed in March 2006 and on September 28, 2006, "first plasma" was achieved.
Operations and results
On September 28, 2006, first plasma was achieved--the first test lasted nearly three seconds, and generated an electrical current of 200 kiloamperes. 
By Jan 2007 "the reactor created a plasma lasting nearly five seconds and generating an electrical current of 500 kilo amperes".
In February, 2016, a plasma pulse was maintained for a record 102 seconds at approximately 50 million Kelvin. Plasma current of 400kA and a density of about 2.4 x 1019/m3 with slowly increasing temperature.
On November 2, 2016, it was able to successfully sustain high-confinement (H-Mode) plasma for over a minute. The reactor was able to maintain a temperature of 50 million Kelvins, about three times as hot as Sun’s core.
China is a member of the ITER consortium, and EAST is a testbed for ITER technologies.
EAST was designed to test:
- Superconducting Niobium-titanium poloidal field magnets, making it the first tokamak with superconducting toroidal and poloidal magnets
- Non-inductive current drive
- Pulses of up to 102 seconds with 0.5 MA plasma current
- Schemes for controlling plasma instabilities through real-time diagnostics
- Materials for diverters and plasma facing components
- Operation with βN = 2 and confinement factor H89 > 2
|Toroidal field, Bt||3.5 T|
|Plasma current, IP||1.0 MA|
|Major radius, R0||1.85 m|
|Minor radius, a||0.45 m|
|Aspect ratio, R/a||4.11|
|Ion cyclotron resonance heating (ICRH)||3 MW|
|Lower hybrid current drive (LHCD)||4 MW|
|Electron cyclotron resonance heating (ECRH)||None currently (0.5 MW planned)|
|Neutral beam injection (NBI)||None currently (planned)|
|Pulse length||1–1000 s|
Single null divertor
- Project/6.doc[dead link]
- "China to build world's first "artificial sun" experimental device". People's Daily Online. 2006-01-21.
- "China's New Thermonuclear Fusion Reactor Test Successful". China.org.net. September 29, 2006.
- Xinhua article Jan 15, 2007 Chinese scientists conduct more tests on thermonuclear fusion reactor. 2007-Jan-15
- EAST at IPP-CAS
- "That's cute, Germany – China shows the world how fusion is done". more data in screen shot
- "China's 'Artificial Sun' achieves fusion breakthrough". People's Daily Online. November 3, 2016.
- "China’s “Artificial Sun” Manages To Stay On For A Minute". Techworm. November 10, 2016.
- "EAST (HT-7U Super conducting Tokamak)----Hefei Institutes of Physical Science, The Chinese Academy of Sciences".
- Chinese Academy of Sciences Institute of Plasma Physics - EAST
- People's Daily article
- Xinhua article Mar 1 2006 - Note that EAST is not the "world's first experimental nuclear fusion device".
- Xinhua article Mar 24, 2006 Nuke fusion reactor completes test
- Mainichi Daily News article Jun 2, 2006