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MI Report

MI Report. MI operation Shot to the Tev. Proton coalesce eff. ~ 86-93% with 13BT Pbar coalesce eff. ~ 92-95% Shot to the RR Efficiency ~ 100% (+/- 2%)in the MI ~ 97% (+/- 2%) MI => RR Stacking Intensity @ TOR105B ~ 8.1E12 with 13BT Numi Intensity @ Target ~ 33.8E12 with 11BT.

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MI Report

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  1. MI Report • MI operation • Shot to the Tev. • Proton coalesce eff. ~ 86-93% with 13BT • Pbar coalesce eff. ~ 92-95% • Shot to the RR • Efficiency ~ 100% (+/- 2%)in the MI • ~ 97% (+/- 2%) MI => RR • Stacking • Intensity @ TOR105B ~ 8.1E12 with 13BT • Numi • Intensity @ Target ~ 33.8E12 with 11BT Main Injector

  2. Beam to Pbar Main Injector

  3. Beam to Numi Main Injector

  4. Effect of MI8 collimators on $2B intensity SBD MI8 Collimators in MI8 collimators out Main Injector

  5. MI Operation • Issues • MIVAC front–end not responding • Experts Continue to investigate • Has not tripped for several days • MIRF • PA on ST#2 was replaced • MIRF15 modulator air flow was tripping filaments • Abort line vacuum pump is failing. • Needs to be addressed next shutdown Main Injector

  6. MI Operation • Beam intensity operating limits for MI. Measured at I:TOR852 • DOE limit is 9.9E16 protons / Hr. • If violated, DOE is notified and???? • Operating limit is 8.64E16 protons / Hr. • If violated Roger Dixon must agree to turn back on. • Mau Limit is 7.776E16 protons / Hr. • If violated Mau and Roger get an email. The crew chief will reduce intensity. • => 4.75E13 / pulse @ 2.2s rep rate. • => 4.3E12 / Booster batch for all 11 batches Main Injector

  7. MI operations Main Injector

  8. IPM at injection $23, as found Main Injector

  9. IPM at injection $23, after Q849 adjustment Main Injector

  10. NuMi Target Spot Sixe Change with Q849 Adjustment Main Injector

  11. Next week • Pending issues • Abort line vacuum • Beam studies • 12 batch slip stacking on $2E. • MI8 line matching and BPM calibration • MI8 line intensity and collimator losses? Main Injector

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