Conveners
HIE-ISOLDE Technical Session
- Yacine Kadi (CERN)
The High Intensity and Energy ISOLDE project (HIE-ISOLDE) is a major upgrade of the ISOLDE post-accelerator at CERN. Phase 2A of the project was completed in June 2017 when an additional cryomodule and the third High Energy Beam Transfer line (HEBT) were installed and commissioned. The 2017 Physics campaign started immediately after. Multiple stable and Radioactive Ion Beams (RIBs) were...
The cryogenic system for the project phases 1 & 2 of HIE-ISOLDE is based on a refurbished helium cryo-plant previously used to cool the ALEPH magnet during the operation of the LEP accelerator from 1989 to 2000. The helium refrigerator is connected to a new cryogenic distribution line, supplying a 2000-liter storage dewar and six interconnecting valve boxes (i.e jumper boxes). Since its...
The test result of the newly developed seamless cavity is compared with the series cavities already installed and operated in the cryomodules.
Slow and uniform cool down has been preferred by the series cavities; thus optimized cool-down procedure has achieved performance better than the nominal design.
The off-line test in a dedicated cryostat showed that the seamless cavity did not depend on...
A ten-fold increase in the bunch spacing of post-accelerated radioactive ion beams has been requested by several research groups at ISOLDE, CERN in order for experiments to use time-of-flight particle identification and background suppression techniques. It is proposed to bunch externally into the existing REX-RFQ at a frequency of 10.128 MHz using a multi-harmonic buncher to produce the...
