Speaker
Description
A Molfow+ vacuum study of the Injector of LIPAc was done and its results compared with real operation campaign.
LIPAc is a lineal accelerator located in the north of Japan whose purpose is to validate the engineering for the project IFMIF. During 2024 the commisioning phase B+ ended, which was the commissioning of LIPAc in its configuration without the SRF Linac replaced by the MEBT Extension Line (MEL). A maximum duty cycle of 8.75% with a pulse length of 3.5ms and a repetition period of 40ms at RFQ* cavity voltage of 132 kV and deuteron beam current of around 118 mA was achieved. Some trials were done at 10% duty cycle with 4ms pulse length and 40ms repetition period.
Experimental data from the operation campaign was used to make a comparison with a vacuum study achieved in Molflow+.In the injector there are two penning gauges and one residual gas analyzer located in the injector cavity. An updated 3D model of the cavity was made to get accurate results and boundary conditions replicating the campaign were set. Finally, results of the study show a good correlation of the Penning gauges measurements as they are inside the commom margin of error of this instrumentation.
Footnotes
Linear IFMIF Prototype Accelerator
International Fusion Materials Irradiation Facility
Superconducting Radiofrequency Linear Accelerator
Medium Energy Beam Transport
*Radiofrequency Quadrupoles
Funding Agency
This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 EUROfusion)
| Region represented | Europe |
|---|---|
| Paper preparation format | Word |
