INVESTIGATION OF AN ALTERNATE MEANS OF WAKEFIELD SUPPRESSION IN THE MAIN LINACS OF CLIC (2010)
We report on suppression of long-range wakefields in CLIC accelerating structures. Strong detuning and moderate damping is employed. In these initial design studies we focus on the CLIC_G structure...
THIRD HARMONIC CAVITY MODAL ANALYSIS (2010)
Szczesny, B, Shinton, I R R, Jones, R M
Third harmonic cavities have been designed and fabricated by FNAL to be used at the FLASH/XFEL facility at DESY to minimise the energy spread along the bunches. Modes in these cavities are analysed...
Beam Dynamics Studies for the HIE-Isolde Linac at CERN (2009)
Fraser, M A, Pasini, M, Jones, R M, Lindroos, M
The upgrade of the normal conducting (NC) Radioactive Ion Beam EXperiment (REX)-ISOLDE heavy ion accelerator at CERN, under the High Intensity and Energy (HIE)- ISOLDE framework, proposes the use of...
Third Harmonic Cavity Modal Analysis (2009)
Szczesny, B., Shinton, I. R. R., Jones, R. M.
Third harmonic cavities have been designed and fabricated by FNAL to be used at the FLASH/XFEL facility at DESY to minimise the energy spread along the bunches. Modes in these cavities are analysed...
Results are presented on an alternative cavity to the ILC baseline design of TESLA-style SRF main accelerating linacs. This re-optimised shape enhances the bandwidth of the accelerating mode and has...
Hie-Isolde High Beta Cavity Study and Measurements (2009)
D'Elia, A., Jones, R. M., Pasini, M.
The upgrade of the ISOLDE machine at CERN foresees a superconducting linac based on two gap independently phased Nb sputtered Quarter Wave Resonators (QWRs) working at 101.28MHz and producing an...
Fraser, M. A., Pasini, M., D'Elia, A., Jones, R. M.
The superconducting upgrade of the REX-ISOLDE radioactive ion beam (RIB) post-accelerator at CERN will utilise a compact lattice comprising quarter-wave resonators (QWRs) and solenoids, accelerating...
Investigation of an alternate means of wakefield suppression in the main linacs of CLIC (2009)
We report on suppression of long-range wakefields in CLIC accelerating structures. Strong detuning and moderate damping is employed. In these initial design studies we focus on the CLIC_G structure...
Juntong, N., Jones, R. M., Shinton, I. R. R.
The main linacs of the ILC consist of nine-cell cavities based on the TESLA design. In order to facilitate reaching higher gradients we have re-designed the cavity shape. This leads to a reduction,...
Wakefield damping for the CLIC crab cavity (2009)
Ambattu, P. K., Burt, G., Dexter, A. C., Carter, R. G., Khan, V., Jones, R. M., ...
A crab cavity is required in the CLIC to allow effective head-on collision of bunches at the IP. A high operating frequency is preferred as the deflection voltage required for a given rotation angle...
Beam Dynamics Studies for the HIE-ISOLDE Linac at CERN (2009)
Fraser, M. A., Pasini, M., Jones, R. M., Lindroos, M.
The upgrade of the normal conducting (NC) Radioactive Ion Beam EXperiment (REX)-ISOLDE heavy ion accelerator at CERN, under the High Intensity and Energy (HIE)-ISOLDE framework, proposes the use of...
X-band crab cavities for the CLIC beam delivery system (2009)
Burt, G., Ambattu, P. K., Dexter, A. C., Abram, T., Dolgashev, V., Tantawi, S., ...
The CLIC machine incorporates a 20 mrad crossing angle at the IP to aid the extraction of spent beams. In order to recover the luminosity lost through the crossing angle a crab cavity is proposed to...
Initial study on the shape optimisation of the CLIC crab cavity (2008)
Ambattu, P. K., Burt, G., Carter, R. G., Dexter, A. C., Jones, R. M., McIntosh, P.
The compact linear collider (CLIC) requires a crab cavity to align bunches prior to collision. The bunch structure demands tight amplitude and phase tolerances of the RF fields inside the cavity, for...
Crab cavities for linear colliders (2008)
Burt, G., Ambattu, P., Carter, R., Dexter, A., Tahir, I., Beard, C., ...
Crab cavities have been proposed for a wide number of accelerators and interest in crab cavities has recently increased after the successful operation of a pair of crab cavities in KEK-B. In...
Based on Lienard-Weichert retarded potentials and the potential due to the image of charges on the cathode, a rigorous relativistic description of the beam transport inside the RF-photoinjector is...
Beam dynamics and wake-field simulations for the CLIC main linacs (2008)
The CLIC linear collider aims at accelerating multiple bunches of electrons and positrons and colliding them at a centre of mass energy of 3 TeV. These bunches will be accelerated through X-band...
The globalised cascaded scattering matrix technique is a well proven, practical method that can be used to simulate large accelerating RF structures in which realistic fabrication errors to be...
Beam dynamics and wake-field simulations for high gradient ILC linacs (2008)
Higher order modes (HOMs) are simulated with finite element and finite difference computer codes for the ILC superconducting cavities. In particular, HOMs in KEK's Ichiro type of cavity and Cornell...
The FP420 R&D Project: Higgs and New Physics with forward protons at the LHC (2008)
Albrow, M. G., Appleby, R. B., Arneodo, M., Atoian, G., Azhgirey, I. L., Barlow, R., ...
We present the FP420 R&D project, which has been studying the key aspects of the development and installation of a silicon tracker and fast-timing detectors in the LHC tunnel at 420 m from the...
Loaded Delay Lines For Future R.f. Pulse Compression Systems (2007)
Jones Wilson Kroll, R. M. Jones, P. B. Wilson, N. M Kroll
The peak power delivered by the klystrons in the NLCTA (Next Linear Collider Test Accelerator) now under construction at SLAC is enhanced by a factor of four in a SLED-II type of R.F. pulse...
Croucher, P.J.P., Jones, R.M., Searle, J.B., Oxford, G.S.
The integrity of species is not fixed and may vary geographically. Here we investigate the geographic distributions and interactions of species in the Tegenaria atrica group (Araneae: Agelenidae)....
High-level behavior representation languages revisited (2006)
Leuchter, S., Ritter, F.E., Haynes, S.R., Cohen, M., Howes, A., John, B., ...
Design of the ILC crab cavity system. (2006)
Carter, Richard, Adolphsen, C., Beard, C., Bellantoni, L., Burt, G., Chase, B., ...
Hosey, M.T., Makin, A., Jones, R.M., Gilchrist, F., Carruthers, M.
Objectives. To report on both the use and dosage of propofol, as a new intravenous (IV) conscious sedative agent, for anxious children referred to a specialist paediatric dentistry service. Setting....
Energy dispersion compensation and beam loading in X-band linacs for the JLC/NLC (2003)
Jones, R. M., Dolgashev, V. A., Miller, R. H., Adolphsen, C., Wang, J. W.
The shape of an RF pulse is distorted upon propagating through an X-band accelerator structure due to dispersive effects. This distortion together with beam loading introduce energy spread between...
Transverse Impedance Bench Measurements in NLC/JLC Accelerating Structures (2003)
Baboi, N., Bowden, G. B., Jones, R. M., Tantawi, S. G., Lewandowski, J. R.
The wire method is a more rapid and less costly method to measure impedances of RF components compared to methods using a beam. A setup using a single displaced wire to excite and measure transverse...
Dewhurst, David Neil, Jones, R. M., Hillis, Richard Ralph, Mildren, Scott Douglas
The results of natural and laboratory-induced fault behaviour from wells in the Otway Basin are compared with sample material from a producing Carnarvon Basin field where rocks from a fault zone have...
Dewhurst, David Neil, Jones, R. M., Hillis, Richard Ralph, Mildren, Scott Douglas
The results of natural and laboratory-induced fault behaviour from wells in the Otway Basin are compared with sample material from a producing Carnarvon Basin field where rocks from a fault zone have...
Dewhurst, David Neil, Jones, R. M., Hillis, Richard Ralph, Mildren, Scott Douglas
The results of natural and laboratory-induced fault behaviour from wells in the Otway Basin are compared with sample material from a producing Carnarvon Basin field where rocks from a fault zone have...
Room temperature accelerator structures for linear colliders (2001)
Miller, R. H., Jones, R. M., Adolphsen, C., Bowden, G., Dolgashev, V., Li, N. Kroll Z., ...
Early tests of short low group velocity and standing wave structures indicated the viability of operating X-band linacs with accelerating gradients in excess of 100 MeV/m. Conventional scaling of...
Jones, R. M., Kroll, N. M., Higo, T., Miller, R. H., Ruth, R. D
Operating the SLAC/KEK DDS (Damped Detuned Structure) X-band linacs at high gradients (in excess of 70MV/m) has recently been found to be limited by the accelerator structures breaking down and as a...
Jones, R. M., Kroll, N. M., Higo, T., Li, Z., Miller, R. H., Raubenheimer, T. O., ...
Recent experiments at SLAC [1,2] and CERN [3] have revealed evidence of significant deformation in the form of "pitting" of the cells of the 1.8m series of structures DDS/RDDS (Damped Detuned...
Wang, J. W., Adolphsen, C., Bowden, G. B., Burke, D. L., Cornuelle, J., Dolgashev, V. A., ...
As a joint effort in the JLC/NLC research program, we have developed a new type of damped detuned accelerator structure with optimized round-shaped cavities (RDDS). This paper discusses some...
Local and Fundamental Mode Coupler Damping of the Transverse Wakefield in RDDS1 Linacs (2000)
Jones, R. M., Kroll, N. M., Miller, R. H., Ng, C. K., Wang, J. W.
In damping the wakefield generated by an electron beam traversing several thousand X-band linacs in the NLC we utilise a Gaussian frequency distribution of dipole modes to force the modes to...
Jones, R. M., Miller, R. H., Raubenheimer, T. O., Stupakov, G. V.
The main linacs of the Next Linear Collider (NLC) will contain several thousand X-band RDDS (Rounded Damped Detuned Structures). The transverse wakefield in the structures is reduced by detuning the...
Jones, R. M., Kroll, N. M., Miller, R. H., Raubenheimer, T. O., Stupakov, G. V.
In the NLC (Next Linear Collider) small misalignments in each of the individual accelerator structures (or the accelerator cells) will give rise to wakefields which kick the beam from its electrical...
Jones, R. M., Higo, T., Higashi, Y., Toge, N., Kroll, N. M., Loewen, R. J., ...
In fabricating the first X-Band RDDS (Rounded Damped Detuned Structure) accelerator structure, microwave measurements are made on short groups of discs prior to bonding the discs of the entire...
Physics and technology of the Next Linear Collider (2000)
Kuhlman, S, Adolphsen, C E, Aiello, R, Akemoto, M, Alley, R, Assmann, R W, ...
We present the current expectations for the design and physics program of an e+e- linear collider of center of mass energy 500 GeV -- 1 TeV. We review the experiments that would be carried out at...
Integrated hydrocarbon seal evaluation in the Penola Trough, Otway Basin (2000)
Jones, R. M., Boult, P., Hillis, R. R., Mildren, S. D., Kaldi, John George
Seals are one of the main components of the petroleum system, yet their evaluation has received surprisingly little attention in terms of integrated risk assessment. This paper emphasises the need...
Integrated hydrocarbon seal evaluation in the Penola Trough, Otway Basin (2000)
Jones, R. M., Boult, P., Hillis, R. R., Mildren, S. D., Kaldi, John George
Seals are one of the main components of the petroleum system, yet their evaluation has received surprisingly little attention in terms of integrated risk assessment. This paper emphasises the need...
Integrated hydrocarbon seal evaluation in the Penola Trough, Otway Basin (2000)
Jones, R. M., Boult, P., Hillis, Richard Ralph, Mildren, S. D., Kaldi, John George
Seals are one of the main components of the petroleum system, yet their evaluation has received surprisingly little attention in terms of integrated risk assessment. This paper emphasises the need...
Design of a 30 GHz Damped Detuned Accelerating Structure (1997)
Dehler, I, Jones, R M, Krol, N M, Wilson, Ian H, Wuensch, Walter
Within the framework of the SLAC/CERN studies of 30 GHz linear colliders, an attempt has been made to scale as closely as possible the existing X-band NLC damped detuned accelerating structure to 30...
Jones, R.M., Mannetje, L., 't
PARSONS, R. S., JONES, R. M., WRIGLEY, S. R., MACLEOD, K. G. A., PLATT, M. W.
We have compared, in 51 ASA II and III patients undergoing coronary artery bypass surgery, an inhaled anaesthetic technique based on desflurane, supplemented with low-dose (10 μg kg−1) fentanyl,...
Macroptilium lathyroides. (1992)
Jones, R.M., Mannetje, L., 't
Macroptilium atropurpureum. (1992)
Jones, R.M., Mannetje, L., 't
Plant resources of South East Asia. 4. Forages. (1992)
Jansen, P.C.M., Westphal, E., Kartasubrata, J., Mannetje, L., 't, Jones, R.M.
Plant resources of South-East Asia no. 4: Forages. (1992)
Jansen, P.C.M., Westphal, E., Kartasubrata, J., Mannetje, L., 't, Jones, R.M.
Investigation Of The Beam Impedance Of A Slowly Varying Waveguide (1992)
Jones Heifets Stanford, R. M. Jones
INTRODUCTION AND BASIS OF THE METHOD In linear colliders, the particle beam traversing the structure will tend to possess a corona of stray particles with large transverse amplitudes. In order to...
RESISTANCE TO ATRACURIUM IN A PATIENT WITH AN INCREASE IN PLASMA ALPHA1 GLOBULINS (1991)
TATMAN, A. J., WRIGLEY, S. R., JONES, R. M.
We observed that a female patient with a poorly differentiated adenocarcinoma of the stomach undergoing gastrectomy was markedly resistant to the action of the neuromuscular blocking drug atracurium....
Pasture and animal productivity of buffel grass with Siratro, lucerne or nitrogen fertilizer. (1990)
Mannetje, L., 't, Jones, R.M.
JONES, R. M., CASHMAN, J. N., MANT, T. G. K.
The new volatile anaesthetic, desflurane (1–653), was administered to 10 healthy, unpremedicated young male volunteers in order to determine its cardiorespiratory effects and the characteristics...
CASHMAN, J. N., LUKE, J. J., JONES, R. M.
The characteristics of neuromuscular block inducedby doxacurium were compared in patientswith and without renal function. Seventeenpatients with end stage chronic renal failure and18 patients with...
JONES, R. M., KOBLIN, D. D., CASHMAN, J. N., EGER, E. I., JOHNSON, B. H., DAMASK, M. C.
Ten healthy unpremedicated male volunteers were exposed to an average inspired concentration of 3.6% desflurane (1–653) in oxygen for 89 (SD 17) min. Standard haematological and biochemical tests...
Ramseier, Th.M., Kaluza, B., Studer, D., Gloudemans, T., Bisseling, T., Jordan, P.M., ...
Random and site-directed Tn5-induced mutagenesis of Bradyrhizobium japonicum yielded two mutations, one in strain 2960 and the other in strain 2606::Tn5-20, which mapped close to each other but in...
Forage plants for South-East Asia. (1989)
Mannetje, L., 't, Jones, R.M.
POWER, S. J., PEARCE, A. C., JONES, R. M.
The characteristics of the train-of-four (TOF) response have been studied electromyographically during the onset and the spontaneous offset of neuromuscular blockade indued with vecuronium or...
Jones, R.M., Mannetje, L., 't
Cardiac rate and rhythm were compared in 60 patients having dental extractions under conventional general anaesthesia using halothane, enflurane or isoflurane to supplement nitrous oxide in oxygen....
CASHMAN, J. N., JONES, R. M., VELLA, L. M.
The onset characteristics of pancuronium, tubocurarine and a mixture of these two neuromuscular blocking drugs were studied during the induction of neuromuscular blockade, using a train-of-four...
FACTORS AFFECTING TRAIN-OF-FOUR FADE (1985)
PEARCE, A. C., CASSON, W. R., JONES, R. M.
The characteristics of the train-of-four response during neuromuscular blockade with two agents, atracurium and vecuronium, have been compared. During onset of blockade, at 75% depression of...
BROADBENT, M. P., SWAN, P. C., JONES, R. M.
Maximum force of contraction of paced, isolated guineapig atria was measured in three groups. Atria from animals in group 1 were exposed to isoflurane for 10 min. In group 2, atria were exposed to...
CASHMAN, J. N., JONES, R. M., FOSTER, M. G., ADAMS, A. P.
The effect of a constant i.v. infusion of lysine acetyl salicylate (LAS) on pain after operation was compared with that of a constant infusion of morphine in 30 patients undergoing unilateral...
JONES, R. M., CASHMAN, J. N., FOSTER, M. G., WEDLEY, J. R., ADAMS, A. P.
A double-blind study comparing the effectiveness of a continuous infusion i.v. of lysine acetyl salicylate (LAS) with an infusion of morphine for the treatment of pain following pulmonary surgery is...
ATRACURIUM FOR SHORT SURGICAL PROCEDURES IN DAY PATIENTS (1984)
PEARCE, A. C., WILLIAMS, J. P., JONES, R. M.
Atracurium was studied in day-stay patients undergoing short surgical procedures requiring tracheal intubation. In a dose of 0.25 mg kg−1 and with an anaesthetic technique using enflurane, tracheal...
RECOVERY CHARACTERISTICS FOLLOWING ANTAGONISM OF ATRACURIUM WITH NEOSTIGMINE OR EDROPHONIUM (1984)
JONES, R. M., PEARCE, A. C., WILLIAMS, J. P.
The evoked reversal characteristics of atracurium were studied in 21 patients using edrophonium or neostigmine and a train-of-four pattern of stimulation. Reversal of residual atracurium-induced...
The interactions between tubocurarine, pancuronium and alcuronium on neuromuscular transmission have been studied in an isolated neuromuscular preparation (the rat phrenic nerve-hemidiaphragm)....
USE OF PENTOLINIUM IN POSTOPERATIVE HYPERTENSION RESISTANT TO SODIUM NITROPRUSSIDE (1981)
JONES, R. M., HANTLER, C. B., KNIGHT, P. R.
Five patients with systemic arterial hypertension occurring in the postoperative period and resistant to sodium nitroprusside are described. The hypertension was associated with evidence of increased...
Some aspects of (net) emigration from Northern Ireland (1979)
Read before the Society, 12 March 1979
Commercial Building, 2nd Street (Oakland, Oregon) (1890)
G. N. Frazer (ironwork); Page & Dimmick (builder/contractor), Frazer, G. N.; Page & Dimmick, R. M. Jones
exterior
Commercial Building, 2nd Street (Oakland, Oregon) (1890)
G. N. Frazer (ironwork); Page & Dimmick (builder/contractor), Frazer, G. N.; Page & Dimmick, R. M. Jones
exterior
Commercial Building, 2nd Street (Oakland, Oregon) (1890)
G. N. Frazer (ironwork); Page & Dimmick (builder/contractor), Frazer, G. N.; Page & Dimmick, R. M. Jones
exterior
A study of socially shared cognition in design
N E Branki, E A Edmonds, R M Jones
Group working involves a group of players collaborating to achieve a common goal, within which players may have individual goals, but be working towards a common aim. Because design problems are...
An analysis of media integration for spatial planning environments
R M Jones, E A Edmonds, N E Branki
A fundamental concept with multimedia systems is that of 'seamless integration' of various media types. The concept is analysed in the context of spatial planning environments. After traditional uses...
14382 John Duncan, Chief of the Utah. Painting by Gordon Cope: Photograph by R. M. Jones.
14420 Unca Sam. Ute Indian, age 100 years. Painted by Gordon Cope. Photo of painting by R.M. Jones. WPA Utah Art Project.
14382 John Duncan, Chief of the Utah. Painting by Gordon Cope: Photograph by R. M. Jones.
14420 Unca Sam. Ute Indian, age 100 years. Painted by Gordon Cope. Photo of painting by R.M. Jones. WPA Utah Art Project.