摘要:
A method for manufacturing a disc-shaped curved magnet coil, particularly for a system for accelerating and/or storing electrically charged particles such as electrons. The conductors of the coil to be made are to be arranged around a winding core having a convex outside and a concave inside and are then to be fixed in position around the winding core. A coil form or fitting piece of predetermined shape is first added to a winding core, so that a provisional winding body with only positive radii of curvature on its outsides is formed. The conductors are wound under tension around the winding body and subsequently are fastened only to the winding core of the winding body and, after the coil form is removed, the thus exposed conductor portions facing the region of the concave inside of the winding core are pressed against this inside and fixed in position.
摘要:
A magnetic device is arranged in a curved section of the path of electrically charged particles of an acceleration installation around a beam guiding chamber. The magnetic device contains curved coil windings built up of superconducting rectangular conductors, which have convex outsides, concave insides as well as transition regions at the coil ends between these sides. The superconducting coil windings (4a) according to the invention are arranged at least with their winding parts (57, 58) forming the convex outsides (53) and concave insides (54) in grooves of correspondingly formed coil formers of the magnetic device, with the grooves extending downward at least approximately perpendicular to the plane (x-y plane) determined by the particle path. In addition, the superconducting coil windings (4a') in the region of their coil ends (55') are bent up saddle-shaped. With these measures the effect of undesirable conductor motions on the exactitude of the magnetic fields generated by the coil windings can at least largely be excluded.
摘要:
A photomask for a lithography apparatus includes a chip pattern configured to be transferred into a resist layer on a workpiece and at least one registration mark that is configured not to be transferred into the resist layer. Mask qualification may be improved without impacting wafer level processes.
摘要:
A magnetic field device for a system for acceleration and/or storage of electrically charged particles, particularly electrons, comprises curved sections in the particle trajectory, in which an accordingly curved dipole magnet is arranged, which contains superconducting windings and a supplemental winding and with which a magnetic guidance field for the particle beam can be generated which has a weakly focusing effect due to corresponding field gradients. It should be possible to bring about these field gradients in a relatively simple manner also for a high magnetic flux density. Accordingly, it is provided for this purpose that with each dipole magnet which is at least free of iron, a superconducting supplemental winding is associated which is curved accordingly, adjoins at least with its convex outside the region of the concave inside of the curved dipole windings, and with which the necessary field gradients can be brought about in substance.
摘要:
Devices and methods for continuously refilling an evaporator chamber are described. The evaporator chamber includes a vacuum chamber having a partition that is permeable only to liquid material. The solid material can be heated in the vacuum chamber by a heating jacket of the vacuum chamber to liquefaction, and transferred via a drain and a connecting channel into a basin inside an evaporator chamber.
摘要:
A method for testing the generation of scattered light by photolithographic imaging devices is disclosed. In one embodiment, measuring structures that are to be imaged in a photoresist are provided in the vicinity of deliberately structured sections that cause scattered light in the imaging device to be tested, in a photomask. The scattered light which is caused as a function of the configuration of the sections acts on the measurement structures in the photoresist and leads to changes in their CD, which is measured in the photoresist, and allows conclusions to be drawn about the scattered-light behavior of the imaging device. The method is suitable for specifically testing the lens system of the imaging device.
摘要:
A semiconductor wafer is exposed with a pattern from a mask or reticle in an exposure tool. The exposure tool has an adjustable lens system and a light source, which is tunable in wavelength. A first exposure is performed with a tuned first wavelength and a first setting of the lenses. Prior to performing a second exposure onto the same wafer and into the same resist layer, the wavelength of the light source is varied to a second wavelength in order to mimic a focus offset. A resulting image shift at the slit edges of the scanning system due to chromatic aberration is then corrected for by setting the lens system in dependence of the difference between the tuned first and second wavelength. Having tuned second wavelength of the light source and having set the lens system, the second exposure is performed. A continuous adjustment of the lens system based upon a continuously varying light source wavelength can be accomplished.
摘要:
An x-ray generator has a beam guidance system including an air coil and a toroidal solenoid coil, a ring anode surrounding the patient to be examined and arranged axially offset relative to the beam guidance, and individually driveable electron-optical components couple the electrons, which orbit on a circular specified path in the magnetic dipole field of the air coil, out of that path, deflect them in the axial direction, and focus them onto a segment of the ring anode allocated to the respectively activated out-coupling element.
摘要:
Magnetic field-generating apparatus for an installation for accelerating electrically charged particles, the particle track of which comprises curved and straight sections, contains main magnetic field generating windings and at least one supplemental winding which is provided for focusing the particles on the particle track. It should be possible to accelerate relatively large particle streams to relatively high energy levels without the need for separate preaccelerators. In the region of at least one of the curved sections of the particle track the supplemental winding is designed as a conductor arrangement forming a quadrupole triplet for focusing the particles during their acceleration phase, the turns of the supplemental winding being arranged on both sides of the plane in which the particle track lies. In particular, a conductor arrangement forming a quadrupole triplet can be provided in both regions of the curved sections of the particle track wherein these conductor arrangements together form a double-telescope system for focusing the particles.
摘要:
A photomask for a lithography apparatus includes a chip pattern configured to be transferred into a resist layer on a workpiece and at least one registration mark that is configured not to be transferred into the resist layer. Mask qualification may be improved without impacting wafer level processes.