ITEP proton microscopy facility

• Main Authors: Kantsyrev, A. V., Golubev, A. A., Turtikov, V. I., Bogdanov, A. V., Sharkov, B. Y., Demidov, V. S., Skachkov, V. L. S., Markov, N. V., Mintsev, V. B., Fortov, V. E., Kolesnikov, S. A., Nikolaev, D. N., Shilkin, N. S., Ternovoy, V. Y., Utkin, A. V., Yuriev, D. S., Burtsev, V. V., Zavialov, N. V., Mikhailov, A. L., Rudnev, A. V., Tatsenko, M. V., Zhernokletov, M. V., Kartanov, S. A.
• Format: Conference Proceeding
• Language: English
• Subjects: Magnetic force microscopy; Microscopy; Optical microscopy; Particle beams; Protons; Radiography
• ISSN: 0730-9244; 2576-7208
• DOI: 10.1109/PLASMA.2013.6633424

Summary form only given. Proton radiography facility which uses magnetic optics (proton microscope PUMA [2]) was developed at TWAC-ITEP accelerator[1]. PUMA proton microscopy facility was specially designed for studies in the field of high energy density physics, including the research of equations of state and phase transitions of matter at extreme conditions, shockwave and detonation physics, hydrodynamics of high energy density flows, and dynamic material strength and damage studies [3]. Proton microscope PUMA allows the measurement of density distribution within static and dynamic objects by using proton beam with energy 800MeV. Proton-radiographic image of the object is formed in the plane of the detector with magnification k=4. An image of the object is formed using a magneto-optical system consisting of four quadrapole lenses on permanent magnets (PMQ). PUMA facility is designed for the measurement of objects with areal density of 20 g/cm2 with field of view of 20 mm. The spatial resolution of radiographic images depends strongly on the areal density. For PUMA facility, spatial resolution is from 60 microns to 115 microns for areal density of objects from 0.46 g/cm2 to 17 g/cm2, respectively. The term structure of the proton beam consists of four pulses of 47 ns (FWHM), each at an interval of 250 ns. This allows investigating the dynamical state of matter in four consecutive radiographic images. Research was also performed on nondestructive testing of static objects (including tomographic methods) and radiobiological research.