• I. Kourbanis, P. Adamson, B.C. Brown, D. Capista, W. Chou, D.K. Morris, K. Seiya, G.H. Wu, M.-J. Yang
  Fermilab, Batavia

Funding: Work supported by Fermi Research Alliance, LLC under contract No. DE-AC02-07CH11359 with the United States Department of Energy.

Currently Main Injector delivers 330KW of beam power at 120 GeV by using multi-batch slip stacking. The beam power is expected to increase to 400KW after installing clearing gap kickers to eliminate the injection kicker gap loss. The plan to increase the beam power to 700KW for NOvA and the role of MI in Project-X (2.1MW operation) will be discussed.

• B.C. Brown, P. Adamson, D. Capista, A.I. Drozhdin, D.E. Johnson, I. Kourbanis, N.V. Mokhov, D.K. Morris, I.L. Rakhno, K. Seiya, V.I. Sidorov, G.H. Wu, M.-J. Yang
  Fermilab, Batavia

Funding: Work supported by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy

The Fermilab Main Injector is moving toward providing 400 kW of 120 GeV proton beams using slip stacking injection of eleven Booster batches. Loss of 5% of the beam at or near injection energy results in 1.5 kW of beam loss. A collimation system has been implemented to localize this loss with the design emphasis on beam not captured in the accelerating rf buckets. More than 90% of these losses are captured in the collimation region. We will report on the construction, commissioning and operation of this collimation system. Commissioning studies and loss measurement tools will be discussed. Residual radiation monitoring of the Main Injector machine components since 2004 will be used to demonstrate the effectiveness and limitations of these efforts.