Beams Document 7573-v1

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Design Considerations and Operational Features of the Collimators for the Fermilab Main Injector and Recycler

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Submitted by:
Bruce C. Brown
Updated by:
Bruce C. Brown
Document Created:
27 Aug 2019, 13:34
Contents Revised:
27 Aug 2019, 13:41
Metadata Revised:
27 Aug 2019, 13:41
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30 Aug 2019, 11:31
The Fermilab Main Injector system delivers 700 kW of 120 GeV Proton beam for neutrino experiments. Since 2013 this has been achieved using slip stacking accumulation in the Recycler with up to 12 batches from the Fermilab Booster per Main Injector Ramp Cycle. To control activation from beam loss, collimation systems in the Booster to Recycler transfer line, in the Recycler and in the Main Injector are employed. Residual radiation measurements around the ring with detailed studies at the collimators are required to maintain adequate loss control. We will review design considerations, operational parameters and activation results for more than ten years of operation. Simulations with MARS15 are used to explore the activation rates and the isotopic composition of the resulting activation.
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