Injection studies on the isis synchrotron

Jones, B; Adams, D J; Warsop, C M

doi:10.1109/pac.2007.4440849

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Those magnets traverse a painting orbit during injection [14]. A painting injection method is an ordinary way to reduce the space charge effect in a synchrotron [15][16][17][18]. The voltage of the power supply was increased by about twice according to increment of the Linac acceleration energy.…”

Section: Rcsmentioning

confidence: 99%

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Yamamoto¹,

Yamamoto²,

Morishita³

et al. 2017

ujpa

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The accelerator system at Japan Proton Accelerator Research Complex (J-PARC) has been operational since May 2008 and has mainly been used to perform physics experiments. The accelerator system consists of a Linac, a Rapid Cycling Synchrotron (RCS), and a Main Ring Synchrotron. The originally designed RCS injection energy is 400MeV, but the first operation started at 181MeV. New acceleration cavities were installed in J-PARC Linac during the summer shutdown of 2013, and user operation by the Material and Life science Facility (MLF) at the injection energy of 400MeV was started from February 2014. Post beam commissioning of 400MeV injection energy, beam loss was small enough, and we established 300kW continuous operation. Subsequently, the peak current of the Linac was increased from 30mA to 50mA. This upgrade enabled us to try 1-MW beam acceleration. Finally, after some additional improvements, we successfully accelerated 1-MW equivalent protons.

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Section: Rcsmentioning

confidence: 99%

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Yamamoto¹,

Yamamoto²,

Morishita³

et al. 2017

ujpa

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“…Since the ISIS synchrotron is one of the few machines worldwide where some of these important loss mechanisms can be studied experimentally, a series of theoretical and experimental work programmes has been launched. In particular, and summarised as contributions to this conference, studies on optimising injection [18] and of space charge loss mechanisms [19] are being carried out.…”

Section: Ring Randdmentioning

confidence: 99%

ISIS - pulsed neutron and muon source

Findlay

2007

2007 IEEE Particle Accelerator Conference (PAC)

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The ISIS pulsed neutron and muon source is described. Up to now the accelerators have delivered a 145-160 kW proton beam at 50 pps to a tungsten neutron-producing target preceded by a graphite muon-producing intermediate target. However a second target station is now being constructed, and the beam power from the accelerators is being increased so that the first target station will not suffer in performance when the beam has to be divided between two target stations.

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“…Simulations will next look at longitudinal effects. Related studies on ISIS injection are reported in [7].…”

Section: Future and Related Workmentioning

confidence: 99%

Studies of space charge loss mechanisms on the isis synchrotron

Warsop

Adams

Pine

2007

2007 IEEE Particle Accelerator Conference (PAC)

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The ISIS Facility is the pulsed neutron and muon source based at the Rutherford Appleton Laboratory in the UK. Operation centres on the 50 Hz synchrotron, which accelerates ~3x10 13 protons per pulse from 70 to 800 MeV, providing a mean power of about 0.2 MW. As commissioning of a second harmonic RF system is completed, it is expected that the main loss mechanisms will be related to transverse space charge forces, which are particularly strong during the multi-turn injection and trapping processes. Here, we describe progress in ongoing studies to understand more about what drives loss and thus limits intensity. Results from simulations and application of relevant theory are presented, concentrating on the effects thought most important for the ISIS ring. Progress on work looking at the half integer resonance and image effects in the rectangular vacuum vessels is reported, along with work for experimental studies.

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Injection studies on the isis synchrotron

Cited by 4 publications

References 1 publication

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

ISIS - pulsed neutron and muon source

Studies of space charge loss mechanisms on the isis synchrotron

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