… Using conventional RFQ structure for acceleration of particles for higher energies is
impractical because RFQ energy gain decreases rapidly with energy at constant modulation. …

… energy into the RFQ is important. Typically, a lower injection energy results in a shorter RFQ
but other aspects of the RFQ … Lower injection energy results in higher space-charge effect in …

… Quadrupole (RFQ) cell has been applied that significantly improves beam bunching and
longitudinal emittance control to achieve lower longitudinal rms emittance at the RFQ output. …

… The small, compact and reliable RFQ provides operational cost … of the preinjector and
improving access to the ion source. … was gained in operating an RFQ at nearly 100% duty factor. …

… The angle of the cone is optimized to minimize the losses and improve the sensitivity. Each
… on the experience gained with the Linac4 RFQ and the brazing of other RFQs at CERN. …

… improvement was also made during subsequent re-conditionings, and the recovery time to
nominal level was improved … to gain insight into system limits and find a way to operate RFQ …

… the RFQ. The maximum power output of the amplifier is limited to 160-180 kW by both its gain
… The collection of data was improved when we added a National Instruments cRIO-9045 for …

… RFQ linac ("tapering") one can improve the accelerating field in separate RFQ units1 as well
as in a single RFQ … to increase significantly the energy gain of the RFQ linac. We introduce '…

… The principal specifications of the RFQ are (i) formation of extremely low longitudinal …
RFQ cavity, as well as some aspects of the mechanical design of the low-frequency cw RFQ…

… , the energy gain per nucleon of the synchronous particle in an RFQ accelerating cell is [19]: …
It has been proven that the longitudinal output emittance of an RFQ can be improved by …