A method to measure the pressure profile inside evacuated tubes with high voltage electrodes

Autor:	N. V. de Castro Faria, O.D. Gonçalves, Raul Donangelo, J.C. Acquadro, Neide Gonçalves, Ginette Jalbert, L. F. S. Coelho, H. Luna
Rok vydání:	1997
Předmět:	Physics Nuclear and High Energy Physics business.industry Particle accelerator High voltage Pressure vessel law.invention Ion Optics law Electric field Electrode Physics::Accelerator Physics Tube (fluid conveyance) Atomic physics Particle beam business Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 398:162-166
ISSN:	0168-9002
DOI:	10.1016/s0168-9002(97)00827-9
Popis:	We developed a method to determine the pressure distribution in the electrode region of electrostatic accelerators. Direct measurement of this distribution is not possible: the electrodes are maintained inside a high pressure vessel and the presence of vacuum gauges would disturb the beam optics. The method is based on measuring the energy distribution of the atomic ion beams and identifying features associated to collisions with residual gas molecules. The procedure is also applicable to any other evacuated tube in the presence of a static longitudinal electric field. The feasibility of the method was verified in a 1.7 MV commercial particle accelerator using its facilities (accelerator tubes, particle beam, stripper, etc.). The measurements also revealed characteristics of the field structure inside the accelerator tube and the occurrence of leaks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0ef0b465080017f2aa42018422a5f284 https://doi.org/10.1016/s0168-9002(97)00827-9 Zobrazit plný text záznamu Full Text from ScienceDirect