Application of optical emission spectroscopy to high current proton sources

8th International Particle Accelerator Conference

Castro, G.^1 ; Mazzaglia, M.^1 ; Nicolosi, D.^1 ; Mascali, D.^1 ; Reitano, R.^1,2 ; Zaniol, B.^3 ; Celona, L.^1 ; Leonardi, O.^1 ; Leone, F.^1,2,4 ; Naselli, E.^1,2 ; Neri, L.^1 ; Torrisi, G.^1 ; Gammino, S.^1

INFN-LNS, Catania, Italy^1

University of Catania, Catania, Italy^2

Consorzio RFX, Corso Stati Uniti 4, Padova

35127, Italy^3

Istituto Nazionale di Astrofisica, Osservatorio Astrofisico di Catania, Via S. Sofia 78, Catania

95123, Italy^4

关键词: European spallation sources;    Hydrogen plasmas;    Magnetic field profile;    Microwave power;    Neutral pressures;    Non- invasive measurements;    Optical emission spectroscopies (OES);    Plasma temperature;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012033/pdf
DOI  :  10.1088/1742-6596/874/1/012033

来源: IOP

【 摘 要 】

Optical Emission Spectroscopy (OES) represents a very reliable technique to carry out non-invasive measurements of plasma density and plasma temperature in the range of tens of eV. With respect to other diagnostics, it also can characterize the different populations of neutrals and ionized particles constituting the plasma. At INFN-LNS, OES techniques have been developed and applied to characterize the plasma generated by the Flexible Plasma Trap, an ion source used as "testbench" of the proton source built for European Spallation Source. This work presents the characterization of the parameters of a hydrogen plasma in different conditions of neutral pressure, microwave power and magnetic field profile, along with perspectives for further upgrades of the OES diagnostics system.