dorsal/arxiv
View SchemaAn Overview of the Spallation Neutron Source Project
| Authors | Robert L. Kustom |
|---|---|
| Categories | |
| ArXiv ID | physics/0008212 |
| URL | https://arxiv.org/abs/physics/0008212 |
| Journal | eConf C000821 (2000) TU101 |
Abstract
The Spallation Neutron Source (SNS) is being designed, constructed, installed and commissioned by the staff of six national laboratories, Argonne National Laboratory, Brookhaven National Laboratory, Jefferson National Accelerator Laboratory, Lawrence Berkeley National Laboratory, Los Alamos National Laboratory, and Oak Ridge National Laboratory. The accelerator systems are designed to deliver a 695 ns proton-pulse onto a mercury target at a 60-Hz repetition rate and an average power of 2-MW. Neutron moderators that will convert the spallation neutrons into slow neutrons for material science research will surround the target. The Front-End systems are designed to generate an H- beam of minipulses, 68% beam on, 32% beam off every 965 ns, at 2.5 MeV for 1 ms, 60 times a second. The Front-End systems include a RF driven, volume-production ion source, beam chopping system, RFQ, and beam transport. The ion source will have to achieve about 65 mA to deliver 52 mA at the input to the linac. The linac consists of a drift tube linac up to 86.8 MeV, a coupled-cell linac to 185 MeV, and a superconducting RF linac to the nominal energy of 1 GeV. The design of the superconducting section includes 11 cryomodules with three, 0.61-beta cavities per cryomodule and 17 cryomodules with four, 0.81-beta cavities per cryomodule, with space to install four more 0.81-beta cryomodules. The accumulator ring is designed for charge exchange injection at full energy. The peak charge per bunch at the end of the accumulation cycle will reach 2.08x10**14 for 2-MW operation. The goal is to control beam losses to less than 1x10**-4.
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"abstract": "The Spallation Neutron Source (SNS) is being designed, constructed, installed\nand commissioned by the staff of six national laboratories, Argonne National\nLaboratory, Brookhaven National Laboratory, Jefferson National Accelerator\nLaboratory, Lawrence Berkeley National Laboratory, Los Alamos National\nLaboratory, and Oak Ridge National Laboratory. The accelerator systems are\ndesigned to deliver a 695 ns proton-pulse onto a mercury target at a 60-Hz\nrepetition rate and an average power of 2-MW. Neutron moderators that will\nconvert the spallation neutrons into slow neutrons for material science\nresearch will surround the target. The Front-End systems are designed to\ngenerate an H- beam of minipulses, 68% beam on, 32% beam off every 965 ns, at\n2.5 MeV for 1 ms, 60 times a second. The Front-End systems include a RF driven,\nvolume-production ion source, beam chopping system, RFQ, and beam transport.\nThe ion source will have to achieve about 65 mA to deliver 52 mA at the input\nto the linac. The linac consists of a drift tube linac up to 86.8 MeV, a\ncoupled-cell linac to 185 MeV, and a superconducting RF linac to the nominal\nenergy of 1 GeV. The design of the superconducting section includes 11\ncryomodules with three, 0.61-beta cavities per cryomodule and 17 cryomodules\nwith four, 0.81-beta cavities per cryomodule, with space to install four more\n0.81-beta cryomodules. The accumulator ring is designed for charge exchange\ninjection at full energy. The peak charge per bunch at the end of the\naccumulation cycle will reach 2.08x10**14 for 2-MW operation. The goal is to\ncontrol beam losses to less than 1x10**-4.",
"arxiv_id": "physics/0008212",
"authors": [
"Robert L. Kustom"
],
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"journal_ref": "eConf C000821 (2000) TU101",
"title": "An Overview of the Spallation Neutron Source Project",
"url": "https://arxiv.org/abs/physics/0008212"
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