Brookhaven National Laboratory Tandem Facility

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Our MP7 accelerator has had about 70% utilization in the past year, clocking 6000 hours, of which approximately 10% was at terminal voltages between 14.75 and 16.25 MV. This pelletron system, installed in 1977, has logged 40,000 hours, and to date has broken five chains, three in the past four months. There are still two chains that have gone the total time. The injector machine, MP6, with its three chains installed in 1980, has accumulated 18000 hours with no chain failures. About six percent of the operating time in the past year was devoted to four-stage operation or accel-decel production ... continued below

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Pages: 3

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Lindgren, R. January 1, 1983.

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Our MP7 accelerator has had about 70% utilization in the past year, clocking 6000 hours, of which approximately 10% was at terminal voltages between 14.75 and 16.25 MV. This pelletron system, installed in 1977, has logged 40,000 hours, and to date has broken five chains, three in the past four months. There are still two chains that have gone the total time. The injector machine, MP6, with its three chains installed in 1980, has accumulated 18000 hours with no chain failures. About six percent of the operating time in the past year was devoted to four-stage operation or accel-decel production of low energy highly stripped ions, for atomic physics experiments. This type of operation was improved by the addition of a remotely inserted gridded lens at the exit of the special last acceleration tube. Some examples of the beams we have produced are 2.5 MeV /sup 35/Cl, Q16 10 na, 8 MeV /sup 32/S, Q15 .5 na, 2.5 MeV /sup 19/F, 09 20 na. We have acquired two General Ionex 860, Roy Middleton Mark VII sputter sources. One of these we have mounted on an ion pump, with integral focus lens, steerers and perture, and dedicated it to /sup 14/C use, for injection into MP7. To date, from June, we have used it for four runs totaling 32 8-hour shifts, and 116 ..mu..a hours, with a maximum injected beam of 2.5 ..mu..a. The other 860 sputter source was used in a pulse mode to test for possible injection of the tandem accelerated heavy ion beam into BNL's AGS.

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Pages: 3

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NTIS, PC A02/MF A01.

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  • Symposium of Northeastern accelerator personnel, Rochester, NY, USA, 3 Oct 1983

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  • Other: DE84002693
  • Report No.: BNL-33738
  • Report No.: CONF-8310236-1
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5362451
  • Archival Resource Key: ark:/67531/metadc1065071

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • April 24, 2018, 11:45 a.m.

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Lindgren, R. Brookhaven National Laboratory Tandem Facility, article, January 1, 1983; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1065071/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.