Experimental Advanced Superconducting Tokamak
|Experimental Advanced Superconducting Tokamak|
|Affiliation||Hefei Institutes of Physical Science, Chinese Academy of Sciences|
|Major Radius||1.85 m (6 ft 1 in)|
|Minor Radius||0.45 m (1 ft 6 in)|
|Magnetic field||3.5 T (35,000 G)|
|Heating power||7.5 MW|
|Plasma current||1.0 MA|
|Year(s) of operation||2006 – present|
|Experimental Advanced Superconducting Tokamak|
|Hanyu Pinyin||xiānjìn chāodǎo tuōkǎmǎkè shíyàn zhuāngzhì|
|Literal meaning||Advanced Superconducting Tokamak Experimental device|
The Experimental Advanced Superconducting Tokamak (EAST), internal designation HT-7U, is an experimental superconducting tokamak magnetic fusion energy reactor in Hefei, China. The Hefei Institutes of Physical Science is conducting the experiment for the Chinese Academy of Sciences. It has operated since 2006.
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.
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".
On November 7, 2010, EAST achieved its first H-mode plasma by LHW alone.
In May 2011, EAST became the first tokamak to successfully sustain H-Mode plasma for over 30 seconds at ~50 million Kelvin.
On November 29, 2011, The ribbon-cutting ceremony for EAST auxiliary heating system project was held, signifying EAST's entering of “Phase-II”.
On May 19, 2014, after nearly 20-month-long upgrading break since September 2012, EAST was ready for the first round of experiments in 2014.
On November 2, 2016, EAST became the first tokamak to successfully sustain H-Mode plasma for over a minute at ~50 million °C.
On July 3, 2017, EAST became the first tokamak to successfully sustain H-Mode plasma for over 100 seconds at ~50 million °C.
On November 12, 2018, EAST reached a milestone of 100 million °C electron temperature.
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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|
|Configuration||Double-null divertor |
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". The Register. February 6, 2016. more data in screen shot
- "EAST Achieves Longest Steady-state H-mode Operations". EAST team. November 15, 2016.
- "China's 'artificial sun' sets world record with 100s steady-state high performance plasma". Chinese Academy of Sciences. July 5, 2017.
- "Chinese fusion tool pushes past 100 million degrees". Phys.org. November 15, 2018. Retrieved August 10, 2020.
- "EAST (HT-7U Super conducting Tokamak)----Hefei Institutes of Physical Science, The Chinese Academy of Sciences".
- Official website - Official website of EAST Fusion Facility - Chinese Academy of Science
- 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[permanent dead link]