SPring-8

Coordinates: 34°56′41″N 134°25′38″E / 34.94472°N 134.42722°E / 34.94472; 134.42722
Source: Wikipedia, the free encyclopedia.
Inside the SPring-8 facility.

SPring-8 (an acronym of Super Photon Ring – 8 GeV) is a

biochemical protein
characterization by many Japanese manufacturers and universities.

Together with the

PETRA at DESY
in Hamburg, Germany, it is one of the five large (beam energy greater than 5 GeV) synchrotron radiation facilities in the world.

Research

The Laser Electron Photon Experiment at SPring-8 (LEPS) is an experiment producing high-energy (

GeV) photon beams by the inverse Compton scattering of photons upon the 8 GeV electrons of the SPring-8 synchrotron. These are then used for various particle physics experiments on hadrons. The first beam was produced in 1999, and data-taking commenced in 2000.[1]

The SPring-8 circumference ring facility.

The collaboration is known for their reports of a

Review of Particle Physics of the Particle Data Group ruled out the existence of this resonance,[2] but new reports from LEPS indicate that the resonance could be seen in the
γ

d
 →
K+

K−

p

n
 channel.[3]

Use by police

The materials analysis at SPring-8 can be used as forensics to identify substances for police investigations by detecting the types and combinations of impurities. For example, in the 1998

Wakayama curry poisoning incident, the arsenic used as the poisoning agent in a communal pot of curry contained trace impurities of bismuth and antimony, which were also present in arsenic found in the perpetrator's home.[4][5]

In another case, evidence from SPring-8 led to the arrest of three former members of the Aum Shinrikyo cult suspected in the 1995 shooting of Takaji Kunimatsu, Japan's head of the National Police Agency at the time.[5] Like the curry poisoning incident, impurities in the metal traces in the coat of a suspect were matched to impurities in the gun used in the shooting.

In popular culture

In the

Ghost in the Shell: S.A.C. 2nd GIG anime series, SPring-8 is mentioned several times, and is the facility where the character Ishikawa takes a sample of weapons-grade Plutonium
to be analyzed to verify its source.

In Salvation of a Saint, a piece of evidence is sent to SPring-8 for analysis.

See also

References

  1. ^ T. Hotta (27 October 2009). "Laser Electron Photon Experiment at SPring-8". Osaka University. Archived from the original on 2009-10-08. Retrieved 2009-11-21.
  2. ^ C. Amsler et al. (
    S2CID 227119789
    .
  3. ^ T. Nakano et al. (LEPS collaboration) (2009). "Evidence of the Θ+ in the γd → K+K−pn reaction".
    S2CID 118475729
    .
  4. ^ Clark, Sue; Delaney, Anne (30 July 2004). "Sleuthing with Synchrotrons". The Buzz. Radio National. Retrieved 30 April 2015.
  5. ^
    doi:10.1038/news040705-6
    .

External links

34°56′41″N 134°25′38″E / 34.94472°N 134.42722°E / 34.94472; 134.42722

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