FLIPPER is a joint multidisciplinary research unit at Complutense University of Madrid (UCM) created in 2020 with members of the faculties of Physics, Pharmacy and Biology. It is dedicated to the study of the effects of radiation in human tissues, working towards the optimization of radiation therapy techniques including proton radiotherapy, FLASH (ultra-high dose rate radiotherapy), personalized medicine, and the combination of radiotherapy with inmune and chemo therapies.

It is led by Prof. Daniel Sánchez-Parcerisa, from the Faculty of Physics at UCM. The members of the FLIPPER unit belong to well-established research groups such as the Nuclear Physics Group, Cell Signaling and Tumour Progression, and Cannabinoid Signaling. Their members are integrated in the San Carlos Health Institute (IdISSC) and the Institute of PARticles and COSmology (IPARCOS).

We have performed several experiments with X-Rays, clinical and low-energy protons, and electrons, at conventional and ultra-high dose rates. Collaborating institutions include Quironsalud proton therapy center, Center for Microanalysis of materials (CMAM), the Institute of Bioengineering of Catalonia (IBEC), and the companies Vitala and Sedecal Molecular Imaging.