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What Do We Do If Some Of The Mice Magnets Cant Be Kept Cold Using The Two Stage Coolers
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Book Synopsis What Do We Do, If Some of the MICE Magnets Can't be Kept Cold Using the Two-stage Coolers?. by :
Download or read book What Do We Do, If Some of the MICE Magnets Can't be Kept Cold Using the Two-stage Coolers?. written by and published by . This book was released on 2011 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests of the spectrometer solenoids have not been encouraging in terms of keeping the magnets cold using three 1.5 W (at 4.2 K) coolers. The spectrometer solenoids are being rebuilt with additional cooling capacity at 4.2 K. It is hoped that there will be sufficient 4.2 K cooling to keep the magnets cold. The spectrometer solenoids can be kept cold using liquid helium (up to a boil-off of 20 liters per day). This option does not apply for the other magnets in the MICE cooling channel, because there is not enough liquid helium storage within the magnet cold mass. It is important that the MICE collaboration ask the question, "How do we keep the MICE cooling channel magnets cold, if there isn't sufficient cooling from the 4.2 K coolers?" This report discusses the cooling requirements at both 40 K and 4.2 K for all three types of MICE cooling channel magnets. This report discusses the steps that must be taken in the magnet fabrication to permit the magnets to be cooled using a small (20 to 40 W) external 4.2 K Claude cycle refrigerator. One must also ask the question as to whether there is enough excess capacity in the decay solenoid refrigerator to cool some of the MICE magnets. A plan for cooling the magnets using a Linde 1400 series refrigerator is presented. A plan for increasing the 4.4 K refrigeration from the existing decay solenoid refrigerator is also presented.
Book Synopsis Advances in Cryogenic Engineering by : J. G. Weisend
Download or read book Advances in Cryogenic Engineering written by J. G. Weisend and published by American Institute of Physics. This book was released on 2008-04-17 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: All papers have been peer-reviewed. This conference is the principal North American Conference on cryogenic engineering. It is attended by scientists and engineers from all over the world. The papers published here have been fully refereed and cover all aspects of cryogenic engineering including: refrigeration, superconductivity, cryocoolers, air liquefaction, heat and mass transfer, insulation systems, cryostat design and space cryogenics.
Book Synopsis English Mechanic and Mirror of Science and Art by :
Download or read book English Mechanic and Mirror of Science and Art written by and published by . This book was released on 1883 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis English Mechanic and World of Science by :
Download or read book English Mechanic and World of Science written by and published by . This book was released on 1885 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis English Mechanic and Mirror of Science by :
Download or read book English Mechanic and Mirror of Science written by and published by . This book was released on 1883 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis English Mechanics and the World of Science by :
Download or read book English Mechanics and the World of Science written by and published by . This book was released on 1905 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comfort written by and published by . This book was released on 1899 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Atomic Scientists by :
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1972-10 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
Book Synopsis How the Performance of a Superconducting Magnet is Affected by TheConnection Between a Small Cooler and the Magnet by :
Download or read book How the Performance of a Superconducting Magnet is Affected by TheConnection Between a Small Cooler and the Magnet written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As low temperature cryocoolers become more frequently used to cool superconducting magnets, it becomes increasingly apparent that the connection between the cooler and the magnet has an effect on the design and performance of the magnet. In general, the use of small coolers can be considered in two different temperature ranges; (1) from 3.8 to 4.8 K for magnet fabricated with LTS conductor and (2) from 18 to 35 K for magnets fabricated using HTS conductor. In general, both temperature ranges call for the use of a two-stage cooler. The best method for connecting a cooler to the magnet depends on a number of factors. The factors include: (1) whether the cooler must be used to cool down the magnet from room temperature, (2) whether the magnet must have one or more reservoirs of liquid cryogen to keep the magnet cold during a loss of cooling, and (3) constraints on the distance from the cooler cold heads and the magnet and its shield. Two methods for connecting low temperature coolers to superconducting magnets have been studied. The first method uses a cold strap to connect the cold heads directly to the loads. This method is commonly used for cryogen-free magnets. The second method uses a thermal siphon and liquid cryogens to make the connection between the load being cooled and the cold head. The two methods of transferring heat from the magnet to the cooler low temperature cold head are compared for the two temperature ranges given above.
Download or read book Popular Science written by and published by . This book was released on 2002-12 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.
Book Synopsis Cold Mass Issues in the MICE Coupling Magnet by :
Download or read book Cold Mass Issues in the MICE Coupling Magnet written by and published by . This book was released on 2011 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: I have identified two potential issues in the design of the attachments to the MICE coupling magnet cold mass. One of these attachment issues may extend into the cold mass. Both issues came to light during the analysis of what happened to the spectrometer solenoids. We must not make the same mistakes that were made on the spectrometer solenoids. The two questions that result from the identified issues are; 1) Are the superconducting low temperature superconducting leads between the coupling coil and the lower end of the high temperature superconducting (LTS) leads robust enough not quench and burn out? In the spectrometer solenoid one part of the LTS lead was not robust enough to prevent quenching and a burn out of the LTS lead and ; 2) Will there be problems with the quench protection resistors and diodes when the magnet quenches as a result of an HTS lead burning out or a disconnect of the magnet from its power supply? The second question is very important because the coupling coil has a large stored energy and inductance. As result, when current flows through the diodes and the resistors, both can be over heated. We observed resistor overheating in spectrometer magnet 2. This heating probably happened when the HTS lead the LTS lead burned out during the tests of magnet 2A and 2B respectively. (See MICE Note 324.) The answer to the first question is simple and straightforward. This is the issue that is primarily dealt with in MICE Note 324. If the resistance across the coil sub-divisions is high enough, the whole magnet will turn normal through quench-back. Making the resistance across a coil sub-division high enough is not simple.
Download or read book The Engineer written by and published by . This book was released on 1859 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific American written by and published by . This book was released on 1885 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Popular Mechanics written by and published by . This book was released on 2000-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
Download or read book Popular Mechanics written by and published by . This book was released on 2000-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
Download or read book The Gas Times written by and published by . This book was released on 1951 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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