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Minty, M.

Publications and source records attributed to Minty, M..

114 records · Page 7
All sourcesNASA NTRSDOE OSTI
DOE OSTI2012

Multi-slit Based Emittance Measurement Study for BNL ERL

A code for determining the beam emittance from a multi-slit image has been developed. To verify its validity, we simulated a beam distribution in 4D phase space at the multi-slit position and the resulting image at a downstream profile measurement device. We applied the algorithm to this image pattern to recover the beam emittance at the slit position. The dependence of the relative difference of the inferred emittance and the input emittance on the slit width and drift length are studied in detail and presented in this report.

43 PARTICLE ACCELERATORS↗
DOE OSTI2012

Multi-slit Based Emittance Measurement Study for BNL ERL

A code for determining the beam emittance from a multi-slit image has been developed. To verify its validity, we simulated a beam distribution in 4D phase space at the multi-slit position and the resulting image at a downstream profile measurement device. We applied the algorithm to this image pattern to recover the beam emittance at the slit position. The dependence of the relative difference of the inferred emittance and the input emittance on the slit width and drift length are studied in detail and presented in this report.

43 PARTICLE ACCELERATORS↗
DOE OSTI2012

Report on Betatron Phaseadvance Measurements with Phaseshifter in RUN 12

The function of upcoming E-lens requests the phase advance between the collision IP and location of E-lens(IP10) to be integer multiples of pi. The RHIC quadrupole mains were modified(phaseshifter) to allow the control of phase advance between IP8 and IP10. Measurements were made during RHIC run 2012 to confirm the effect of phaseshifter on the betatron phase advance between the two IPs. The results are reported in this paper.

43 PARTICLE ACCELERATORS↗
DOE OSTI2012

Report on Betatron Phaseadvance Measurements with Phaseshifter in RUN 12

The function of upcoming E-lens requests the phase advance between the collision IP and location of E-lens (IP10) to be integer multiples of pi. The RHIC quadrupole mains were modified (phaseshifter) to allow the control of phase advance between IP8 and IP10. Measurements were made during RHIC run 2012 to confirm the effect of phaseshifter on the betatron phase advance between the two IPs. The results are reported in this paper

43 PARTICLE ACCELERATORS↗
DOE OSTI2011

Re-Visit Local Coupling Correction in the Interaction Regions of RHIC

In this article we will re-visit the local coupling correction in the interaction regions (IRs) of the Relativistic Heavy Ion Collider (RHIC). We will review the measurement data of triplet quadrupole rolls, the local coupling correction strengths in the RHIC control system, and the methods for the local coupling correction with local skew quadrupole correctors. Based on the in-turnnel measurement data of triplet roll errors in 2011, we will analytically calculate and simulate IR-bump method to find out the local skew correction strengths and compare them at store and at injection with the Blue and Yellow ring lattices in the 2011 polarized proton (p-p) and Au-Au runs. The vertical dispersion from the triplet roll errors, local and global coupling correction skew quadrupoles, and the vertical dipole correctors are calculated and discussed.

43 PARTICLE ACCELERATORS↗
DOE OSTI2011

Analysis and correction of vertical dispersion in RHIC

In the context of preserving the polarization of proton beams, the source of vertical dispersion in RHIC is analyzed. Contributions to dispersion from non-coupling sources and coupling sources are compared. Based on the analysis of sources for dispersion, the right actuator for correcting dispersion is determined and a corresponding algorithm is developed.

43 PARTICLE ACCELERATORS↗