CERN Accelerating science

Small and medium experiments group

ISOLTRAP’s MR-ToF mass separator to plumb a neutron star

by Robert Wolf for the ISOLTRAP collaboration

Measurements with ISOLTRAP at ISOLDE-CERN play a key-role in studying the interior of neutron stars and help building an equation of state for this special class of object.

PRESENT STATUS AND FUTURE PROGRAMS OF THE n_TOF EXPERIMENT

by E.Chiaveri , on behalf of n_TOF Collaboration

Since   2001,  with its rich scientific program,  the   n_TOF   experiment  is   contributing to  the   world efforts   aimed   at  collecting   high  quality  data,  mostly  on  capture   and  fission  neutron-‐induced reactions. The  realization of the  Experimental  Area  2  (EAR-‐2)  with  its  enhanced capabilities will  be  of  utmost importance  for the   neutron physics   community   and will   also  be complementary   to   other  future installations.

The COMPASS  Collaboration comprises about  230   physicists and the experiment   is located   in  EHN2 (888) in  the North Area. COMPASS measured in  2012   the  electric  and  magnetic  polarizability   of  the pion  and  collect  for the first  time  data  on  the  kaon  polarizability.  These  polarizabilitites  are   fundamental  properties of   pions/kaons  and can be calculated with high  precision  in  Chiral   Perturbation  Theory –  a   low energy expansion of   QCD.

CLOUD

A new experiment, known as CLOUD1, began operation at the CERN PS in November 2009 [CERN Bulletin (2009)]. The CLOUD collaboration comprises 17 institutes from Europe, Russia and the United States, and brings together a diverse interdisciplinary team of atmospheric physicists and chemists, and space, cosmic ray and particle physicists [CLOUD Collaboration].

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