RFQFORCWAPPLICATIONS A.Pisent,INFN/LNL,Legnaro,Padova,Italy Abstract CWRFQsrequiressoliddesignsincetheyhavetodeal withdesignchallengesandtechnologicallimitations.This talkoverviewstherecentperformancesofsomeofthe mostpowerfulRFQcavities.Development, industrialisationandcommissioningresultsofCWRFQ aredescribeanddiscussed,...
In the RFQ, the Mu$^-$'s are accelerated to 89~keV. The accelerated Mu$^-$'s are identified by momentum measurement and time of flight. This first muon acceleration is one of big milestones for realizing new muon g-2 experiment at J-PARC.doi:10.22323/1.340.0229M. Otani...
The fabrication of a new RFQ has been started as a backup machine for the J-PARC linac. The RFQ cavity is divided by three unit tanks in the longitudinal direction. The unit tank consists of two major vanes and two minor vanes, those are brazed together. A one-step vacuum brazing of ...
The RFQ and the initial stage drift tube linac are also completed. An example (drift tube linac) is shown in Fig. 7. The present accelerators have many unique features. For example, design for synchrotron magnets was performed so as to have no transition energies in the ring. A novel ...
COMPARATIVE STUDY OF BEAM DYNAMICS IN THE RFQ FOR J-PARC LINAC A new linac front-end had been installed for intensity up- grade of J-PARC in 2014, July-September. It consists of a 50 keV Ion Source (IS), a two-magnetic... S Artikova,Y Kondo,T Morishita,... 被引量: 0发表: 0...
Status and test results of HPRF system for PEFP The PEFP 20MeV proton accelerator is composed of 3 MeV RFQ and 20MeV DTL and two sets of 1 MW, 350 MHz RF system are required for each accelerating structu... KT Seol,HJ Kwon,HS Kim,... - IEEE 被引量: 7发表: 2005年 ...
The linac has also unique technologies to minimize beam loss, such as compact electromagnet Drift Tube Quadrupoles (DTQ's) to control beam envelopes precisely, and a fast beam suspending system in Machine Protection System (MPS) with Radio Frequency Quadrupole linac (RFQ). The beam commissioning ...
RFQ II was developed as a spare RFQ because the operating... Y Kondo,T Sugimura,H Kawamata,... - Physical Review Special Topics - Accelerators and Beams 被引量: 16发表: 2013年 The development and beam test of an RF chopper system for J-PARC The linac of the Japan Proton Accelerator ...
Although the ion source is capable of producing an H- ion current of more than 30 mA, the current is routinely restricted to approximately 16 mA at present for the stable operation of the RFQ linac which has serious discharge problem from September 2008. The beam run is performed during 1 ...
For operation with such a high beam current, it is important to understand transverse and longitudinal beam properties especially in low-velocity region. A medium energy beam transport (MEBT1) line between the 3-MeV radio-frequency quadrupole linac (RFQ) and the 50-MeV drift-tube linac (DTL)...