Original sentence: Several large scale facilities are available, the most important of which are the 10 MW BER-II nuclear research reactor at the Lise Meitner  campus in Wannsee and the third-generation BESSY synchrotron in Adlershof.The institute studies the structure and dynamics of materials and investigates solar cell technology
Edited sentence: Both the reactor and synchrotron operate as user facilities.Due to the high competition for experiments, beam time is awarded after peer review of two page proposals which state the scientific case for each measurement.Onsite guesthouses exist at both campuses.Several large scale facilities are available, the most important of which are the 10 MW BER-II research reactor at the Lise Meitner campus in Wannsee and the 3rd generation BESSY synchrotron in Adlershof.The institute also specialises in research at high magnetic fields and low temperatures and is a world leader in providing sample environment for neutron scattering and physical property measurements.The institute carries out research into the structure and dynamics of novel materials and also investigates solar cell technology.User groups are expected to run experiments on a 24-hour basis to maximise the use of the facility