| Paper | Title | Page |
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| MOPMR038 | Design and Simulation Studies of the Novel Beam Arrival Monitor Pickup at Daresbury Laboratory | 334 |
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| We present the novel beam arrival monitor pickup design currently under construction at Daresbury Laboratory, Warrington, UK. The pickup consists of four flat electrodes in a transverse gap. CST Particle Studio simulations have been undertaken for the new pickup design as well as a pickup design from DESY, which is used as a reference for comparison. Simulation results have highlighted two advantages of the new pickup design over the DESY design; the signal bandwidth is 25 GHz, which is half that of the DESY design and the response slope is a factor of 1.6 greater. We discuss optimisation studies of the design parameters in order to maximise the response slope for bandwidths up to 50 GHz and present the final design of the pickup. | ||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR038 | |
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| TUPOY025 | ProBE - Proton Boosting Extension for Imaging and Therapy | 1963 |
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| Conventional proton cyclotrons are practically limited by relativistic effects to energies around 250 MeV, sufficient to conduct proton therapy of adults but not for full-body proton tomography. We present an adaptation of the cyclinac scheme for proton imaging, in which a c.250 MeV cyclotron used for treatment feeds a linac that delivers a lower imaging current at up to 350 MeV. Our ProBE cavity design envisages a gradient sufficient to obtain 100 MeV acceleration in 3 metres after focusing is included, suitable for inclusion in the layouts of existing proton therapy centres such as the UK centre under construction at Christie Hospital. In this paper, we present the results of design studies on the linac optics and RF cavity parameters. We detail particle transmission studies and tracking simulation studies. | ||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOY025 | |
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| WEPMB058 | LHC Crab Cavity Coupler Test Boxes | 2248 |
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| The LHC double quarter wave (DQW) crab cavities have two different types of Higher Order Mode (HOM) couplers in addition to a fundamental power coupler (FPC). The FPC requires conditioning, so to achieve this we have designed a radio-frequency (RF) quarter wave resonator to provide high transmission between two opposing FPCs. For the HOM couplers we must ensure that the stop-band filter is positioned at the cavity frequency and that peak transmission occurs at the same frequencies as the strongest HOMs. We have designed two test boxes which preserve the cavity spectral response in order to test the couplers. | ||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMB058 | |
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| THPMB056 | Witness Beam Production with an RF Gun and a Travelling Wave Booster Linac for AWAKE Experiment at CERN | 3378 |
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Funding: This work is supported by the Cockcroft Institute Core Grant and STFC. AWAKE is a unique experiment that aims to demonstrate the proton driven plasma wakefield acceleration. In this experiment, proton bunches from the SPS accelerator will be injected into a 10m long pre-formed plasma section to form wakefields of hundreds MV/m to several GV/m. A second beam, e.g., the witness beam, will be injected after the protons in an appropriate phase to gain energy from the wakefields. A photo-injector will be utilised to deliver this second beam. It consists of an S-band RF gun followed by a meter long accelerating travelling wave structure (ATS). The RF gun was recuperated from existing PHIN photo-injector. A 3D RF design of the ATS was done by using the CST code and the field maps produced were used to characterise the electron beam dynamics under space charge effect by using the PARMELA code. The impact of the mechanical errors on the beam dynamics were investigated. |
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| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB056 | |
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