Japanese Planned Ilc Collider Shrinks To Half

In 2013, I discussed the Japanese contest choosing the host of the International Linear Collider



The folks inwards the Sefuri mountains who created this catchy music video lost in addition to Tohoku won instead – those had to a greater extent than credible, respected, in addition to boring physicists behind themselves, non to hollo a five times longer video alongside the twenty times smaller discover of views. ;-)




Yesterday, Nature announced that physicists shrink plans for side yesteryear side major collider. How much did it shrink? H5N1 lot. By 50%.




In March 2013, the electron-positron collider was supposed to collide 250+250=500 GeV beams, in addition to after fifty-fifty 500+500=1000 GeV beams, inwards a 33.5-kilometer long tunnel.

Well, the length of the tunnel was shrunk to roughly twenty km right away in addition to the particles colliding should alone accept 125+125=250 GeV. The cost would last shrunk yesteryear 40% or so, to roughly $7 billion inwards total.

The amount center-of-mass unloosen energy is a special discover because this unloosen energy is plenty for the Higgs boson yoke production – the Higgs boson majority happens to last 125 GeV, too. I am non certain whether they pay whatever attending to this special phenomenon happening at this energy, whether they volition seek to amplify this exceptional yoke creation termination or permit it. The collider should last sufficiently energetic to probe the energies slightly below equally good equally slightly inwards a higher house this threshold, I think.

Update: Tristan is telling me that the yoke production "hh" is alone visible at higher energies in addition to this i relies on "Zh" only.

Note that the amount unloosen energy is pocket-sized compared to the LHC's 6,500+6,500=13,000 GeV but the electron-positron collisions are much cleaner in addition to novel physics should last to a greater extent than visible.

Well, this downward tendency is disappointing. Chinese are dandy but inwards the grand scheme of things, because of the political systems etc., I would likely even then prefer such big projects to last operate yesteryear the Japanese.

This collider could probe the properties of the Higgs boson inwards item in addition to exactly but I am non certain whether this job would brand me excited yesteryear itself. It sounds similar physics of the 6th house of decimals to me.