A muon collider or Higgs factory requires significant reduction of the six dimensional emittance of the beam prior to acceleration. One method to accomplish this involves building a cooling channel using high pressure gas filled radio frequency cavities. The performance of such a cavity when subjected to an intense particle beam must be investigated before this technology can be valid... https://www.roneverhart.com/Pop-Smoke-x-Vlone-Stop-Snitching-T-shirt-White-Blue/