Fast 4 to 8 GHz Debuncher betatron stochastic cooling for the Tevatron upgrade

Technical Report · Wed Jul 01 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/6036421· OSTI ID:6036421

Mtingwa, S K

The present 2 to 4 Ghz Debuncher betatron stochastic cooling systems are designed to cool 7 x 10/sup 7/ antiprotons with initial transverse emittances of 20..pi.. mm-mrad down to 7..pi.. mm-mrad in 2 seconds. For the Tevatron upgrade, it would be advantageous to cool twice the number of antiprotons from 20..pi.. mm-mrad to 1..pi..d mm-mrad in half the time. We explore the possibility of achieving this goal with 4 to 8 Ghz stochastic cooling systems. Since the transverse beam size is initially more than twice the width of the cooling electrodes, we compare the effectiveness of one, two, and three plate pairs spaced strategically along the transverse beam direction. We also compare constant gap size electrodes with that for gap sizes which track the beam size as the emittance is reduced. We find that the three plate pair variable gap geometry performs the best, closely followed by the two plate pair variable gap geometry. Because of lower production costs we would suggest use of the latter. 8 refs., 7 figs., 37 tabs.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (USA)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 6036421
• Report Number(s): FNAL-TM-1469; ON: DE88000695
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
ANTINUCLEON BEAMS
ANTIPARTICLE BEAMS
ANTIPROTON BEAMS
BEAM COOLING
BEAMS
COMPUTER CALCULATIONS
CYCLIC ACCELERATORS
DATA
ELECTRODES
FERMILAB TEVATRON
INFORMATION
NUMERICAL DATA
STOCHASTIC COOLING
SYNCHROTRONS
THEORETICAL DATA