Report on booster high pulse repetition rate operation tests conducted on March 29, 1998

Technical Report · Thu Apr 08 04:00:00 EDT 1999

DOI:https://doi.org/10.2172/5495· OSTI ID:5495

Webber, R C ^[1]

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1. Fermilab

The proposed MiniBooNE experiment requires pulses of 8 GeV beam from the Fermilab Booster at an average repetition rate of 5 Hz and expects to run simultaneously with both Tevatron Collider and NUMI experiment operation. NUMI and antiproton production for the Tevatron Collider together require Booster beam on six consecutive 15 Hz cycles each 1.867 seconds (i.e. every twenty-eight 15 Hz cycles). In this same interval, nine to ten beam pulses are necessary to satisfy MiniBooNE. Booster is therefore expected to accelerate beam on sixteen of every twenty-eight 15 Hz cycles, corresponding to average beam pulse operation of 8.6 Hz. The Booster cycle rate is nominally 15 Hz although not all Booster equipment is capable of pulsing continuously at that rate. The Booster gradient magnets are cycled continuously at 15 Hz, but the RF systems and pulsed injection and extraction devices are not. These devices are triggered on each beam cycle and on one or two 15 Hz cycles immediately prior to each beam cycle (or burst of 15 Hz beam cycles). This pre-pulsing is done to establish a fresh charge on energy storage elements in the power supplies and to reset remnant fields in preparation for beam. The pre-pulses result in an average pulse repetition rate for the power equipment somewhat higher than that of the beam. A high pulse repetition rate test of all Booster systems was conducted on March 29, 1998, to identify equipment in need of modification, upgrade, or replacement in order to satisfy the expectations identified above. In general, Booster beam was not run during these tests. The procedure and results of the tests are described in this note.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 5495
• Report Number(s): FERMILAB-TM-2074
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ANTIPROTONS
FERMILAB TEVATRON
GEV RANGE 01-10
MAGNETS
PARTICLE BOOSTERS
PERFORMANCE TESTING
POWER SUPPLIES
PULSE TECHNIQUES
RF SYSTEMS