deletions | additions       diff --git a/sectionThe_CERN_ISOL.tex b/sectionThe_CERN_ISOL.tex  index 8135df8..30cf154 100644  --- a/sectionThe_CERN_ISOL.tex  +++ b/sectionThe_CERN_ISOL.tex 
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%-------  CERN is home to a vast network of accelerators, increasing the energy of protons (that originate from a helium gas bottle) until they reach almost the speed of light (99.99999...\%). After the initial stage of acceleration, the protons exiting the Proton Sychrotron Booster have an energy of 1.4~GeV. From all the protons that are emitted from the PSB, 50\% of them are delivered to ISOLDE (see Fig.~\ref{fig:isolde}) to produce radioactive ion beams. Based on the isotope separation on-line technique (developed in Sweden in the 1960s), ISOLDE has been producing exotic isotopes since its first experiments in 1967~\cite{ref}. 1967~\cite{Hansen1969}.  These high-energy protons are bombarded onto a thick target (e.g. uranium carbide), producing a vast array of radioactive species which are then ionised. In order to separate the ions of interest (much like finding a needle in haystack), magnets are used to select the radioactive ions that have the correct mass. These fundamental concepts (ionization, chemical difference, path of a charged particle in a magnetic field), necessary for explaining how ISOLDE works, can be easily grasped by even a young audience. After selection of the exotic isotope of interest, ISOLDE can deliver these isotopes to a selection of permanent (or `travelling') experiments, that can be easily approached by resident scientists and visitors alike\footnote{Access to some parts may be restricted at times to account for safety concerns.}. These setups perform experiments in a wide range of physics disciplines, most notably nuclear-structure physics, nuclear astrophysics, fundamental physics, solid state physics, biophysics and medical applications. This allows insight into a variety of topics such as the nature of the strong force, nuclear properties and reactions in stellar evolution. In some cases, the radioactive beam is not the topic of study, but is used as a tool to investigate the characteristics of new materials or to support novel medical research. ISOLDE hosts a rich and diverse experimental programme, with close to 50 different experiments scheduled each year between Easter and Thanksgiving, which includes more than 700 users spread across 17 member states\footnote{Belgium, Denmark, Finland, France, Germany, Greece, India, Ireland, Italy, Norway, Poland, Romania, Slovakia, South Africa, Spain, Sweden and the United Kingdom.} and beyond \cite{Borge2016}.   %\textbf{Kara - 20th January}