
	Where results make sense

Topic: Bending magnets

In the News (Sun 27 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Beamline - Wikipedia, the free encyclopedia
		These devices include sophisticated transducers, such as bending and focusing magnets; diagnostics such as beam position monitors (or BPMs) and wire scanners; lenses; collimators; thermocouples; ion pumps, ion gauges, and ion chambers (sometimes called "beam loss monitors"); vacuum valves ("isolation valves") and gate valves, to mention a few.
		It is imperative and critical to have all beamline sections, magnets, etc, aligned by a survey and alignment crew by using a laser tracker.
		Beamline may also refer to an end station which uses the synchrotron radiation produced by the bending magnets and insertion devices in the storage ring of a synchtrotron radiation facility.
	en.wikipedia.org /wiki/Beamlines (1200 words)

	Synchrotron - Wikipedia, the free encyclopedia
		A synchrotron is a particular type of cyclic particle accelerator in which the magnetic field (to turn the particles so they circulate) and the electric field (to accelerate the particles) are carefully synchronized with the travelling particle beam.
		While a cyclotron uses a constant magnetic field and a constant-frequency applied electric field, and one of these is varied in the synchrocyclotron, both of these are varied in the synchrotron.
		In the case of an ordinary (not superconducting) electromagnet the field strength is limited by the saturation of the core (when all magnetic domains are aligned the field may not be further increased to any practical extent).
	en.wikipedia.org /wiki/Synchrotron (1166 words)

	AECOM CSB Introduction
		These electron bunches are maintained in the circular orbit by a series of bending magnets that are equally spaced around the 170 meter circumference of the ring.
		As the electrons traverse the magnetic fields, they are accelerated or "bent" to maintain the orbit, and in the process photon energy is given off over a wide frequency range.
		Thus, at each of the 40 bending magnets found around the ring, beam ports are placed (up to three can co-exist side by side for each magnet) to allow the radiation to pass safely in a confined vacuum space o an experimental chamber.
	www.aecom.yu.edu /home/csb/introduction.htm (544 words)

	Synchrotron High-Speed Magnet Monitoring Using Ethernet-Based System (Site not responding. Last check: 2007-10-26)
		The electron beam is held in the storage ring by a seriesof high-power bending magnets along the beam path, which keep electrons traveling around a 360° arc.
		Along the beam path, the magnet arrangement is in a repetitive sequence called a periodic magnet lattice.
		Magnetic fields are produced by passing high DC current through electromagnetic core windings.
	www.nasatech.com /Briefs/Jan05/KEI15068.html (892 words)

	Bending Beams I (Site not responding. Last check: 2007-10-26)
		Magnets steer the beam to where it needs to be at different times, and they also help to focus it.
		As you move the magnets closer to the beam of electrons the beam moves in a direction perpendicular to both the magnet path and the beam.
		A magnetic field causes a current of electrons to move at right angles to both the magnetic field (along the magnet) and the current.
	www.colorado.edu /physics/2000/tv/moving_electrons.html (144 words)

	ASI Synchrotron Glossary (Site not responding. Last check: 2007-10-26)
		In a synchrotron, the magnetic field is constantly increased in such a way that the path of the particle beam remains constant as the particles are accelerated.
		The radiation is emitted as the electron beam passes through the bending magnets in the curved sections and through insertion devices that may be installed in the straight sections of the ring.
		X-ray magnetic circular dichroism: an effect is caused by the difference (dichroism) in absorption of left and right circularly polarized light by atoms with a magnetic moment.
	alpha.asi.ualberta.com /Glossary/GlossaryTerms.htm (7521 words)

	Magnetostatics
		The magnetic fields of dipole magnets are used to bend particles.
		Dipole magnets can be used to keep particles moving in a circular trajectory, either to store them (storage ring), or to make them repeatedly pass through an acceleration section inserted into the circular path (circular accelerator).
		The strength of the magnetic field generated by a current loop may be enhanced by winding many turns of conductor, instead of a single turn, around the loop.
	capp.iit.edu /~vpa/magnetostatics.html (708 words)

	Simulations of Neutrino Factory Muon Capture with Chicane
		With this in mind, the next component is a 'chicane' of specially-designed bending magnets, in which the faster particles will go on paths further to the outside of two opposing bends in the accelerator.
		This was not a severe limitation in the decay-channel-only optimisation, as the number of muons retained was some 25× as large as the random variations, but with the bending chicane added, the muon transfer fell to the level where these variations were beginning to confuse the optimiser.
		The bend consists of four identical 'triplets' of magnets (B1, B2, B1) with fields such that a pencil beam of muons with varying energies emerges from a triplet as a dispersed beam and rotated by 101°.
	www.stephenbrooks.org /ral/report/2002-1 (3308 words)

	SECTION 2
		In this section, formulas and supporting graphs are used to quantitatively describe characteristics of this radiation for the cases of circular motion (bending magnets) and sinusoidal motion (periodic magnetic structures).
		y = 0, the radiation is linearly polarized in the horizontal plane, as in the case of the bending magnet.
		For bending magnets, the electron beam divergence effect is usually negligible in the horizontal plane.
	xdb.lbl.gov /Section2/Sec_2-1.html (1347 words)

	INTRAN:TRANSPORT
		Such elements may consist not only of magnets and the intervals between them, but also of specifications of the input beam, calculations to be done, or special configurations of the magnets.
		Therefore through a bending magnet the reference trajectory is the arc of a circle, while through all other magnetic elements it is a straight line.
		Magnets and intervening spaces and other elements then follow in the sequence in which they occur in the beam line.
	www.triumf.ca /intran/html/intran_15.html (2716 words)

	Low ß / High Dx (Site not responding. Last check: 2007-10-26)
		The sagitta through the gradient magnet is 11.7 mm and the interior beampipe width is 66.6 mm.
		2a and 2b, by moving like-polarity magnets as far apart as possible the horizontal tune is reduced to 50o from the nominal 85o.
		By concentrating the bend at the ends of the insert the beam trajectory becomes offset by 1.00m into the tunnel at the straight section center.
	www-fmi.fnal.gov /fmiinternal/MI_Notes_Pages/MI-0236.html (1175 words)

	Printable Version
		Each of the 48 bending magnets at Diamond is approximately one metre long and consists of coils wrapped around the terminals of a ferromagnetic yoke.
		The spectral distribution (the number of photons with a given energy) of the bending magnet is a smooth continuum.
		The critical energy, proportional to the magnetic field and the square of the electron energy, is defined to be the energy at which half the power is radiated above, and half below.
	www.diamond.ac.uk /PrinterFriendly?postingGUID={A0653D2C-07F4-4311-B403-2A5FF972DFDA}&titlePH=phdefTitle&mainPH=phdefMain (252 words)

	Inside the storage ring - ESRF (Site not responding. Last check: 2007-10-26)
		These magnetic structures, made up of a complex array of small magnets, force the electrons to follow an undulating, or wavy, trajectory.
		The beams of radiation emitted from the different bends overlap and interfere with each other to generate a much more intense beam of radiation than that generated by the bending magnets.
		These magnets, placed in the straight sections of the storage ring, are used to focus the electron beam to keep it small and well-defined.
	www.esrf.fr /AboutUs/GuidedTour/StorageRing/printview (144 words)

	Synchrotron Experiments
		A synchrotron is a particular type of cyclic particle accelerator in which the magentic field (to turn the particles so they circulate) and the electric field (to accelerate the particles) are carefully synchronized with the travelling particle beam.
		For proton synchrotrons, the high energy limit is set by the strength of the bending magnets.
		For a given bending magnet strength, higher energies can be achieved only by making the radius larger.
	synchroexperiments.org (464 words)

	Past Projects
		The magnets are being built as part of the US program, recommended by the High Energy Physics Advisory Panel (HEPAP) and approved by Congress, to contribute to the construction and, later, use of that frontier machine by the US high energy physics community.
		The magnets, some 20 in all, are large: the largest have two, 10 meter long beam pipes with 80 millimeter apertures in a single iron yoke and weigh some 25 tons.
		The coils for all the magnets being built by Brookhaven are the same as those used for the main RHIC bending magnets, but the yokes and containment vessels are new.
	www.bnl.gov /magnets/LHC_IR_Dipoles/IR_Dipoles.asp (715 words)

	Australian Synchrotron - How is Synchrotron Light Created?
		The electrons are confined to the circular orbit by a series of bending magnets separated by straight sections.
		As the electrons are deflected through the magnetic field created by the bending magnets, they give off electromagnetic radiation, so that at each bending magnet a beam of synchrotron light is produced.
		It will accommodate the three different types of light sources (bending magnets, multipole wigglers and undulators) to enable a wide range of advanced experiments or measurements to be carried out.
	www.synchrotron.vic.gov.au /content.asp?Document_ID=97 (410 words)

	Magnets And Power Supply System Of Jhf 50-Gev Main Ring (ResearchIndex) (Site not responding. Last check: 2007-10-26)
		The bending magnet is of a modified window frame type, whose maximum field is 1.9 T. Field gradient of the quadrupole magnet is 20 T/m in peak and the bore radius is 63 mm.
		The total active power of bending and quadrupole magnets is estimated to be about 100 MW in peak....
		Evaluation Of Magnetic Alloys For Jhf Rf Cavity - Yoshio Tanabe
	sherry.ifi.unizh.ch /9719.html (239 words)

	Bending Magnet (Site not responding. Last check: 2007-10-26)
		Originally, the sole purpose of a synchrotron was to act a storage ring for linear accelerators and to achieve this circular orbit, bending magnets were used.
		Shown below is a schematic of a wiggler along with emitted intensities for various wigglers and bending magnets.
		At beamline 6-2, a 1 Tesla, 54 pole wiggler is used (27 periods of 7.0cm) is used to generate a.5x4.0 mm focused x-ray beam with an energy range from 2.05KeV to 22KeV.
	www-ssrl.slac.stanford.edu /~txrf/bending_magnet.htm (161 words)

	[No title]
		bending magnets BMH06 and BMH08 are 18.7 and 16.5 mm respectively.
		The magnet is 1.8 m long and has a field of 15.06 kG.
		The septum magnet is 1.8 m long and has a field of 15.06 kG.
	www3.tsl.uu.se /~ziemann/ESS/device.list (2173 words)

	SSRL: Wiggler and Undulator Magnets
		The wigglers and undulators are inserted between the bending magnets, which keep the electrons traveling around the storage ring.
		The device causes electrons to follow a sinusoidal path instead of a curved one by establishing a series of magnetic fields that alternate in polarity and are perpendicular to the electrons' direction of travel.
		The deflections of the beam are smaller in an undulator than in a wiggler, and the radiation's brightness can, in theory, be increased by a factor about equal to the square of the number of oscillations, but only at discrete photon energies.
	www2.slac.stanford.edu /vvc/ssrl/wigglers.html (222 words)

	The Naked Scientists Science Discussion Forum - Bending magnets (Site not responding. Last check: 2007-10-26)
		Take a bar magnet & bend it into a circle, then weld the 2 ends together with a conductive material.
		This is what you are trying to achieve with a toroidal transformer temporarily - the voltage being proportional to the rate of change of magnetisation (or whatever H is called).
		If the magnetisation is constant it would have almost no effect on anything outside the loop, except quantum mechanical wave functions whose phase will change depending on which way round the loop they go, producing interference effects.
	www.thenakedscientists.com /forum/topic.asp?TOPIC_ID=3026 (236 words)

	Accelerator Details: How Synchrotrons Work (Site not responding. Last check: 2007-10-26)
		The protons in the Fermilab synchrotrons are bent in a circle by magnets and kept focused by quadrupoles, another type of magnet.
		The magnetic force is perpendicular to both the velocity of the particle and the direction of the magnetic field lines.
		The magnet strength (proportional to particle momentum) and the RF frequency must be synchronized to keep the particles in the ring.
	www-bd.fnal.gov /public/synchrotrons.html (701 words)

	[Neutron] Fw: J-PARC Newsletter22
		In Newsletter #20, we reported that the first ceramics vacuum chamber for the RCS bending magnet (BM) was in the final stage of its fabrication, where RCS stands for the 3-GeV, 1-MW Rapid- Cycling Synchrotron.
		In contrast to the circular aperture of those for the quadrupole magnets (QM), the aperture of those for the BM is a race-track shape in order to keep a large physical acceptance in both horizontal and vertical directions.
		The magnet consists of left-right asymmetric coils of a single layer, which produce a superposition of a dipole field of 2.6 T and a quadrupole field of 19 T/m at the operating current of 7345 A for 50 GeV operation.
	www.neutron.anl.gov /pipermail/neutron/2005/001221.html (2398 words)

	LBL Research Review, Spring 1993
		Although the synchrotron light from the ALS bending magnets is not as bright as that from the ALS insertion devices, it compares very favorably with the light from other synchrotron bending magnet sources because of the high quality of the ALS' electron beam.
		Each of the ring's 12 arc-shaped sections contain three dipole bending magnets, six quadrupole magnets that focus the electron beam, and four sextupole magnets that correct for the spread of electron energies.
		The other bending magnet beamline, built by researchers at LBL's Center for X-ray Optics, will serve as a `'white-light" microprobe to detect and measure the presence of trace amounts of elements-amounts as small as a millionth of a billionth of a gram.
	imglib.lbl.gov /LBNL_Res_Revs/RR_online/93SP/93sart1.html.source (4002 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		The magnetic lattice of the ring consists of four super periods, each having one dipole magnet with a field index of 0.5 and two doublets of quadrupoles.
		Its unit cell has two 22.5$^\circ$ dipole magnets, a triplet of quadrupoles for the control of dispersion in the achromat section and two quadrupole triplets for the adjustment of beam sizes in the long straight section.
		Photon flux and brightness calculations for radiation from bending magnets and insertion devices such as wigglers and undulators.
	www.iucf.indiana.edu /~sylee/icfa9/icfa9-act2.html (1071 words)

	About Fermilab - History and Archives - Main Ring
		The coil for each magnet will be built as three separate coils, a 4-turn inner coil close to the beam where accurate tolerance must be maintained, and two outer "window" coil that can be built to standard commercial tolerances.
		Magnetic redesign of the B1 magnet for this change is almost complete.
		The bending magnets are painted light and dark blue; there also are quadrupole magnets painted red which are four and seven feet in length.
	history.fnal.gov /main_ring.html (6153 words)

	Accelerator Physics at the SRS (Site not responding. Last check: 2007-10-26)
		The first utilises the same bending magnets as those which make the electrons go around the accelerator (see All About Accelerators).
		The bending of the electrons by the magnetic fields in the magnet is an acceleration, making the electrons emit electromagnetic radiation.
		Wavelengths from infrared through visible and ultraviolet light to X-rays are emitted; the SRS bending magnets produce a peak output in the X-ray region of the electromagnetic spectrum at a wavelength of 4 Angstroms (1 millimetre is 10 million Angstroms).
	www.astec.ac.uk /ap/ownts/bending.html (94 words)

	[No title]
		As charged particles pass between the poles of magnets that are designed to "bend" them into a circular orbit around an evacuated synchrotron ring, the magnetic field causes them to accelerate (change direction) and emit electromagnetic radiation in a direction tangential to their path.
		When inserted into a straight section of the storage ring (between the bending magnets), they cause the electron or positron beam to follow a sinusoidal path and produce approximately n times more photon flux, where n is the number of dipoles.
		Several spectral curves showing brightness as a function of energy for dipole (bending magnet) and insertion device sources at the NSLS are shown in Figure 2.
	www.research.ibm.com /journal/rd/444/jordansweet.txt (8959 words)

	Lighting The Way -- LBL's Advanced Light Source
		Synchrotron accelerators, which use dipole "bending" magnets to curve the paths of accelerating electrons into circular orbits, produce copious amounts of synchrotron light in a sweeping beam that is similar to that of a beacon.
		However, unlike the sweeping beacon of light from bending magnets, the light from a wiggler is directed, like that of a flashlight.
		The other bending magnet beamline, built by researchers at LBL's Center for X-ray Optics, will serve as a "white-light" microprobe to detect and measure the presence of trace amounts of elements--amounts as small as a millionth of a billionth of a gram.
	www.lbl.gov /Science-Articles/Archive/advanced-light-source-at-lbl.html (2580 words)

Try your search on: Qwika (all wikis)