Visits

Mamphono Khaketla, minister of education and training for the Kingdom of Lesotho, second from left, came to CERN on 8 July. The delegation, which included, from left to right, Motsoakapa Makara, principal secretary for the ministry of education and training, Mefane Lintle, Lesotho delegate, and Moshe Anthony Maruping, Lesotho ambassador, visited the ATLAS visitor centre with Peter Jenni, former ATLAS spokesperson.

On 2 August Kassym-Jomart Tokayev, director-general for the United Nations Office at Geneva, centre right, toured the LHC superconducting magnet test hall at CERN with Frédérick Bordry, left, head of CERN's technology department. While at CERN, Tokayev also visited the ATLAS visitor centre and UNOSAT (UNITAR's operational satellite-applications programme).

Director-general, ministry of higher education, science and technology for the Republic of Slovenia, Jana Kolar, left, was welcomed to CERN on 18 July by CERN's director-general, Rolf Heuer. During her visit she toured the ATLAS visitor centre, the LHC superconducting magnet test hall and CERN's exhibition the Universe of Particles in the Globe of Science and Innovation.


Antihydrogen matters

The past year's results on trapping antihydrogen at CERN have not only brought many plaudits for the scientists involved, but have also sparked the public imagination.

The latest honour from the scientific community is from the American Physical Society (APS) whose 2011 John Dawson Award for excellence in plasma-physics research goes to members of the ALPHA collaboration. William Bertsche (Swansea), Paul Bowe (Aarhus), Michael Charlton (Swansea), Joel Fajans (University of California, Berkeley), Makoto Fujiwara (TRIUMF), Jeffrey Hangst (Aarhus), Niels Madsen (Swansea), Francis Robicheaux (Auburn), Daniel Silveira (RIKEN), Dirk Van der Werf (Swansea) and Jonathan Wurtele (University of California, Berkeley) will received the award at a ceremony at the APS Division of Plasma Physics Annual Meeting in November.

News of the trapping of antihydrogen for 1000 s in June caused quite a stir (CERN Courier July/August 2011 p6). Following articles that appeared in the French press, Jeffery Hangst, spokesperson for the ALPHA collaboration, was delighted to receive a congratulatory note from François de Rose, one of the founding fathers of CERN, a non-scientist now in his 100th year (CERN Courier January/February 2011 p44). The same news also reached a wider audience, inspiring, for example the poem and cartoon, reproduced here.


Does antimatter matter?

     The scientists at CERN
     with artifice sublime
     have trapped some anti-hydrogen
     a thousand seconds at a time.

     They cooled some anti-protons
     with a neg-magnetic yield
     then squeezed the stuff together
     with a strong magnetic field.

     The thousand seconds over
     came the end of their creation.
     Magnetic field turned off caused
     anti-stuff's annihilation.

     The scientists are hopeful
     that they will learn one day
     why, when next to simple matter,
     anti-matter vanishes away.

     These mysteries of science
     they really make you think
     If matter rules our universe
     could it vanish in a wink?

– John Treneman

• Taken from "some perverse verse" (volume 5) and reprinted by kind permission of the author, John Treneman.

This cartoon by Vicky Woodward first appeared in The Xplanationblog (http://blog.xplana.com) and is reproduced with their kind permission.