巨大な加速器を使って宇宙の成り立ちのなぞに迫る「国際リニアコライダー」(ILC)。国際研究グループは12日、その設計報告書を発表した。全長は世界最大の31キロ、建設費は8300億円。最短で2015年ごろに建設場所が決まり、建設期間は10年の見込み。今後は建設実現に向けた模索が始まるが、焦点はその建設場所や巨額の費用の負担割合だ。ただ、朝日新聞デジタルの記事によると、日本に建設される公算が大きいとみられる。朝日新聞デジタルは次のように報じている。
欧米は財政難などの理由で誘致に消極的で、LCCは日本の誘致に期待している。国内では岩手・宮城両県にまたがる北上山地と、佐賀・福岡両県にまたがる脊振山地が候補地に上がっている。国内の研究者らは、7月末までに候補地を一つに絞って国に提案する。
（朝日新聞デジタル「全長３１キロ、建設８３００億円 ＩＬＣ、宇宙の謎に迫る巨大加速器」2013/6/13）
ILCとは、地下100メートルに全長30～50キロのトンネルを建設し、電子と陽電子を光速に近い速度まで加速させて衝突させる仕組み。宇宙が誕生した「ビッグバン」直後の状態を人口的に作り出し、宇宙創生や物質誕生の謎に迫ろうとする研究だ。政府レベルで誘致に手を挙げている国はないが、国内では東北と九州が候補地に名乗りを上げている。
今年2月の朝日新聞デジタルの記事は、岩手県で誘致活動が熱を帯びている様子を伝え、「誘致に成功すれば、世界中の研究者が3千人、家族も含めると1万人が移り住み、30年間の経済効果は4・3兆円」という「試算」を紹介している。（朝日新聞デジタル「正念場のＩＬＣ誘致 岩手県予算を問う（下）」より。2013/2/17）
また、九州では佐賀県と福岡県が、5月にスイスとフランスにまたがるILCの研究施設「欧州合同原子核研究機関(CERN)」を訪れ、熱意をアピール。生活密着型ニュースサイト「朝れい!」によると、福岡・佐賀は「外国の研究者が暮らしやすい国際都市ぶり」を、岩手は「東北再生のシンボル」を訴えているという。
（朝れい！「国際リニアコライダー(ILC)の誘致のため、佐賀県と福岡県の知事がCERNを訪問」より。2013/05/15）
来月には国内候補地は一本化される予定。誘致合戦も最後のスパートに入るとみられるが、さて、勝敗はどちらに?
関連記事
Early Space Missions And The Astronauts Who Led Them
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View of food packets for the Gemini 7 space flight packaged and ready for loading on the Gemini spacecraft. (credit:NASA/JSC/ASU)
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The Gemini-Titan 4 prime crew, astronauts James A. McDivitt (left), command pilot; and Edward H. White II, pilot, are pictured during water egress training at Ellington Air Force Base, Texas. (credit:NASA/JSC/ASU)
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Astronauts Charles Conrad (right), command pilot, and Richard F. Gordon (left), pilot, demonstrate tether procedure between their Gemini 11 spacecraft and the Agena Target Docking Vehicle at the post flight press conference. They use models of their spacecraft and its Agena to illustrate maneuvers. (credit:NASA/JSC/ASU)
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Astronaut Edwin E. Aldrin Jr., backup crew pilot of the Gemini 9 space flight, practices donning the Astronaut Maneuvering Unit (AMU) back pack in bldg 5 of the Manned Spacecraft Center, Houston. (credit:NASA/JSC/ASU)
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Artist concept of Gemini spacecraft and Command Module with two astronauts seated at the controls. (credit:NASA/JSC/ASU)
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Effects of the weightless environment on cell division, the basic growth process for living tissue, studied during the Gemini-Titan 3 flight on March 23, 1965. (credit:NASA/JSC/ASU)
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Astronaut James A. McDivitt, commander of Gemini IV, suited in preparation for weight and balance tests. The objective of the Gemini IV mission was to evaluate and test the effects of four days in space on the crew, equipment and control systems. Pilot Edward White II successfully accomplished the first U.S. spacewalk during the Gemini IV mission. (credit:NASA/JSC/ASU)
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Astronaut Edwin E. Aldrin Jr., backup crew pilot of the Gemini 9 space flight, practices donning the Astronaut Maneuvering Unit (AMU) back pack in bldg 5 of the Manned Spacecraft Center, Houston. (credit:NASA/JSC/ASU)
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The Gemini VI, scheduled as a two-day mission, was launched December 15, 1965 from Pad 19, carrying astronauts Walter M. Schirra Jr., Command Pilot, and Thomas P. Stafford, Pilot. Gemini VI rendezvoused with Gemini VII, already orbiting the Earth. (credit:NASA/JSC/ASU)
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Gemini-Titan 4 (GT-4) lift-off carrying James McDivitt and Ed White for a four-day mission. This flight included the first spacewalk by an American astronaut, performed by Ed White. (credit:NASA/JSC/ASU)
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Atlas Agena target vehicle liftoff for Gemini 11 from Pad 14. Once the Agena was in orbit, Gemini 11 rendezvoused and docked with it. (credit:NASA/JSC/ASU)
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Aerial view of the Gemini/Titan-II launch vehicle #1 liftoff at Cape Kennedy, Florida. (credit:NASA/JSC/ASU)
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Labeled photograph of the Middle East was taken by the crew of the Gemini 4 flight. Areas in Egypt, Syria, Iraq, Israel, and Saudi Arabia are labeled. (credit:NASA/JSC/ASU)
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A bank of clouds over the western Pacific Ocean was photographed by Astronaut Frank Borman and James A. Lovell during the Gemini 7 mission. In the background the moon can be seen. (credit:NASA/JSC/ASU)
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Astronaut Alan B. Shepard Jr., chief, astronaut office, NASA\'s Manned Spacecraft Center in Houston, chomps vigorously on a cigar during relaxing moments following the Gemini-6 liftoff. (credit:NASA/JSC/ASU)
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View of the tracking screen at the front of the Mission Control Center during the Gemini-5 spaceflight. (credit:NASA/JSC/ASU)
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Astronaut Roger B. Chaffee is shown at console in the Mission Control Center, Houston, Texas during the Gemini-Titan 3 flight. (credit:NASA/JSC/ASU)
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The wives of Gemini 4 astronauts James A. McDivitt and Edward H. White II visited the Mission Control in Houston. Left to right are: Mrs. Patricia McDivitt and Mrs. Patricia White. The wives were taking the opportunity to speak to their astronaut husbands as they passed over the United States. (credit:NASA/JSC/ASU)
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NASA successfully completed its first rendezvous mission with two Gemini spacecraft-Gemini VII and Gemini VI-in December 1965. This photograph, taken by Gemini VI crewmembers Walter Schirra and Thomas Stafford, shows Gemini VII in orbit 160 miles (257 km) above Earth. The main purpose of Gemini VI was the rendezvous with Gemini VII. The main purpose of Gemini VII, on the other hand, was studying the long-term effects of long-duration (up to 14 days) space flight on a two-man crew. The pair also carried out 20 experiments, including medical tests. Although the principal objectives of both missions differed, they were both carried out so that NASA could master the technical challenges of getting into and working in space. (credit:NASA/JSC/ASU)
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The Augmented Target Docking Adapter (ATDA) as seen from the Gemini 9 spacecraft. The docking adapter protective cover failed to fully separate on the ATDA and prevented the docking of the two spacecraft. The ATDA was described by the Gemini 9 crew as an \"angry alligator.\" (credit:NASA/JSC/ASU)
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The Agena Target Vehicle as seen from the Gemini 8 spacecraft during rendezvous. This was the first time two spacecraft successfully docked, which was a critical milestone if a mission to the Moon was to become a reality. (credit:NASA/JSC/ASU)
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This photograph taken on December 15, 1965 shows the Gemini 7 spacecraft as it was observed from the hatch window of the Gemini 6 spacecraft during rendezvous manuevers and station keeping at a distance of approximately 9 feet apart. (credit:NASA/JSC/ASU)
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The Gemini 10 spacecraft is successfully docked with the Agena Target Vehicle. The Agena display panel is clearly visible as is glow from Agena\'s primary propulsion system. (credit:NASA/JSC/ASU)
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Edwin E. Aldrin Jr., pilot of the Gemini 12 spacecraft performs extravehicular activity (EVA) during the second day of the four day mission in space. Aldrin is positioned next to the Agena work station. (credit:NASA/JSC/ASU)
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An unusual view of the Gemini 9 spacecraft taken by Eugene Cernan during his Extravehicular Activity (EVA). His umbilical and spacecraft are visible though he is not. (credit:NASA/JSC/ASU)
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Edward H. White II, pilot of the Gemini 4 spacecraft, floats in the zero gravity of space with an earth limb backdrop. The extravehicular activity was performed during the third revolution of the Gemini 4 spacecraft and represents the first time an American has stepped outside the confines of his spacecraft. White is attached to the spacecraft by a 25-ft. umbilical line and a 23-ft. tether line, both wrapped in gold tape to form one cord. In his right hand White carries a Hand-Held Self-Maneuvering Unit (HHSMU). The visor of his helmet is gold plated to protect him from the unfiltered rays of the sun. (credit:NASA/JSC/ASU)
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Astronaut Edward H. White II, pilot for the Gemini-Titan 4 space flight, floats in zero gravity of space. The extravehicular activity was performed during the third revolution of the Gemini 4 spacecraft. White is attached to the spacecraft by a 25-ft. umbilical line and a 23-ft. tether line, both wrapped in gold tape to form one cord. In his right hand White carries a Hand-Held Self-Maneuvering Unit (HHSMU). The visor of his helmet is gold plated to protect him from the unfiltered rays of the sun. (credit:NASA/JSC/ASU)
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On June 3, 1965 Edward H. White II became the first American to step outside his spacecraft and let go, effectively setting himself adrift in the zero gravity of space. For 23 minutes White floated and maneuvered himself around the Gemini spacecraft while logging 6500 miles during his orbital stroll. White was attached to the spacecraft by a 25 foot umbilical line and a 23-ft. tether line, both wrapped in gold tape to form one cord. In his right hand White carries a Hand Held Self Maneuvering Unit (HHSMU) which is used to move about the weightless environment of space. The visor of his helmet is gold plated to protect him from the unfiltered rays of the sun. (credit:NASA/JSC/ASU)
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Astronaut Edward H. White II, pilot for the Gemini-Titan 4 space flight, floats in zero gravity of space. The extravehicular activity was performed during the third revolution of the Gemini 4 spacecraft. White is attached to the spacecraft by a 25-ft. umbilical line and a 23-ft. tether line, both wrapped in gold tape to form one cord. In his right hand White carries a Hand-Held Self-Maneuvering Unit (HHSMU). The visor of his helmet is gold plated to protect him from the unfiltered rays of the sun. (credit:NASA/JSC/ASU)
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On June 3, 1965 Edward H. White II became the first American to step outside his spacecraft and let go, effectively setting himself adrift in the zero gravity of space. For 23 minutes White floated and maneuvered himself around the Gemini spacecraft while logging 6500 miles during his orbital stroll. White was attached to the spacecraft by a 25 foot umbilical line and a 23-ft. tether line, both wrapped in gold tape to form one cord. In his right hand White carries a Hand Held Self Maneuvering Unit (HHSMU) which is used to move about the weightless environment of space. The visor of his helmet is gold plated to protect him from the unfiltered rays of the sun. (credit:NASA/JSC/ASU)
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Waves of clouds along the east flanks of the Andes Mountains cast off an orange glow by the low angle of the sun in the West. The dark area to the left is the Earth\'s terminator. This view was photographed by astronaut Frank Borman and James A. Lovell during the Gemini 7 mission, looking South from Northern Bolivia across the Andes. The Intermontane Salt Basins are visible in the background. (credit:NASA/JSC/ASU)
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Astronauts Neil A. Armstrong and David R. Scott sit with their spacecraft hatches open while awaiting the arrival of the recovery ship, the USS Leonard F. Mason after the successful completion of their Gemini VIII mission. They are assisted by USAF Pararescuemen Eldrige M. Neal, Larry D. Huyett, and Glenn M. Moore. The overhead view shows the Gemini 8 spacecraft with the yellow flotation collar attached to stabilize the spacecraft in choppy seas. The green marker dye is highly visible from the air and is used as a locating aid. (credit:NASA/JSC/ASU)
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As a helicopter hovers above, the Gemini-12 spacecraft with parachute open descends to the Atlantic with astronauts Jim Lovell and Edwin \"Buzz\" Aldrin aboard. (credit:NASA/JSC/ASU)
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Navy divers exit their helicopter to recover the Gemini 5 spacecraft and astronauts shortly after splashdown. (credit:NASA/JSC/ASU)
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Astronaut Charles Conrad, Jr., command pilot of the Gemini 11 space flight, is hoisted aboard a recovery helicopter from the U.S.S. Guam. Astronaut Richard F. Gordon, Jr., pilot, sits in life raft below waiting to be picked up. (credit:NASA/JSC/ASU)
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Dr. Louis P. Ballenberger, Captain, USN, begins a preliminary physical examination of astronaut L. Gordon Cooper Jr., Gemini-5 command pilot, following the successful recovery of the Gemini-5 crew in the splashdown area in the Atlantic Ocean. (credit:NASA/JSC/ASU)
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Gemini 5 astronaut Charles \'Pete\' Conrad Jr. looking out of the helicopter window after recovery from his spacecraft after the splashdown. (credit:NASA)