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AGS/Booster Status

On May 13, 2014, the AGS/Booster meeting highlighted significant improvements in beam performance due to higher EBIS input since last Thursday. This has led to improved RHIC fill intensity and a polarization of approximately 69% with a bunch intensity of 2.2 x 10^11. A reduction in vertical emittance by 10-15% was achieved, although horizontal emittance remained stable. Future work includes more eIPM commissioning and the He3 bunch merge setup next week, while NSRL will be offline. The collaboration involved several key team members in these efforts.

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AGS/Booster Status

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  1. HaixinHuang May 13, 2014 Time Meeting AGS/Booster Status

  2. Status • Higher EBIS input since last Thursday, which resulted higher RHIC fill intensity than last two weeks. • Further reduction of emittance by changing chromaticty has resulted slightly higher polarization. About 69% has been reached with 2.2*1011 bunch intensity. • Vary Booster input from 4 to 8*1011 and maintain the AGS late as 2*1011. Polarization and emittance were measured. There were no difference in the polarization and horizontal emittance, but the vertical emittance is reduced by about 10-15%. Probably source polarization is lower with higher intensity. Will repeat emittance measurement with eIPM. • Vertical emittance has been measured by the newly installed eIPM. • This week, we will do more eIPM commissioning, in addition to polarization profile and ramp measurements. • He3 bunch merge setup next week. NSRL will be off. Haixin Huang

  3. Vertical Emittance is 10-15% with 8*1011 Input Haixin Huang

  4. First eIPM Vertical Emittance Measured at AGS Injection with Proton Beam Done by Roger Connolly, Steve Tepikian, Rob Michnoff, Steve Jao and many others. Haixin Huang

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