Speaker
Description
An ECR microwave H+ source has been built at the HUN-REN EK-CER that targets medium current (20mA) and 35 keV beam energy in continuous or pulsed mode (0.1-10ms @ 0.01-40Hz) and low normalized beam emittance (< 1 π mm.mrad).
A supersonic gas jet-based diagnostic system called LUCID is being developed at EK-CER that can provide a non-invasive beam profile measurement * and allows a novel way for emittance evaluation with an additional mesh to create beamlets. The diagnostic uses a nozzle and skimmers to form a thin (~2 mm) and dense (1017 1/m3) gas curtain of an interaction cross section of ~10x10mm2 inclined at 45° to the beam axis. A CMOS camera is installed to record the yielded photons (~s exposure time, approximately 108 photon/s) from the interaction of the proton beam and gas curtain. It is crucial to use a gas that has a high collisional cross section (e.g. Ar, N or Ne) ** and is easy to distinguish from the residual gas (N) excitation to ensure noiseless detection. This can be achieved by using wavelength filters before the CMOS camera.
This study describes the measurement results of LUCID including gas selection, jet formation (nozzle and skimmer design, curtain thickness and density) and vacuum system configuration. Finally, measurement results are compared with simulations.
| I have read and accept the Privacy Policy Statement | Yes |
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| Supervisor's name | Dr. Gábor Anda |
| Supervisor's email | anda.gabor@ek.hun-ren.hu |
| Paper submission software | LATeX |