Publications (6)0 Total impact
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Conference Proceeding: Intrabeam scattering and touscheck lifetime for the optical stochastic cooling experiment at the MIT-Bates South Hall ring
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ABSTRACT: A proof-of-principle experiment of optical stochastic cooling (OSC) at the MIT-Bates South Hall electron storage ring (SHR) has been proposed. To produce convincing cooling results, the ring will be run near 300 MeV. Beam emittance growth caused by Intrabeam scattering (IBS) is a major concern for the design of experiment. Touschek scattering imposes a dominant limit on beam lifetime. Evaluation of these effects is part of the design optimization process. Simulation analyses of cooling for a viable OSC experiment are presented.Particle Accelerator Conference, 2007. PAC. IEEE; 07/2007 -
Conference Proceeding: Storage ring THz source at MIT-Bates: recent results and development plan
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ABSTRACT: The MIT-Bates South Hall Ring is equipped with a unique 2.856 GHz RF system. High RF frequency is advantageous in generating brilliant stable THz coherent synchrotron radiation (CSR) from an electron storage ring. Intense sub-THz coherent CSR radiation was observed from the (SHR) recently when the ring is operating in a low momentum compaction (a) lattice mode. The signal to background (300 K blackbody) ratio was up to 80000 near 3 cm<sup>-1</sup> frequency. Suppressing beam instabilities and store beam with very short bunch length emerged as the major technical challenges for using such high RF frequency system in storage ring based THz source. Plans to address these issues are presented.Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on; 10/2005 -
Conference Proceeding: Very Short Bunches in MIT-Bates South Hall Ring
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ABSTRACT: The ultra-short bunch is the key for producing strong terahertz coherent synchrotron radiation (CSR) and some other applications. A study is being conducted at MIT-Bates South Hall Ring to get 1 mm or shorter electron bunch length. A set of low momentum compaction lattice configurations have been designed. In first beam experiment in 2004, two of these configurations were successfully commissioned in which the momentum compaction was reduced by two orders of magnitude. About 1 mm rms bunch length was measured with a streak camera. It has been demonstrated that this storage ring machine has a great degree of flexibility and potential as an ideal test bed for various advanced beam physics studies.Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the; 06/2005 -
Conference Proceeding: Terahertz Coherent Synchrotron Radiation in the MIT-Bates South Hall Ring
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ABSTRACT: We investigate the terahertz coherent synchrotron radiation (CSR) potential of the South Hall Ring (SHR) at MIT-Bates Linear Accelerator Center. The SHR is equipped with a unique single cavity, 2.856 GHz RF system. The high RF frequency is advantageous for producing short bunch length and for having higher bunch current threshold to generate stable CSR. Combining with other techniques such as external pulse stacking cavity, femtosecond laser slicing, the potential for generating ultra-stable, high power, broadband terahertz CSR is very attractive. Beam dynamics issues related to short bunch length operation, such as multi-bunch instability (perhaps associated with the high frequency RF system), are considered. The SHR is ideal for experimental exploration of such issues, which could affect bunch length, bunch intensity and beam stability. Results of initial tests of low momentum compaction lattices and bunch length measurements are presented and compared to expectations.Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the; 06/2005 -
Conference Proceeding: Polarized electrons in the MIT-Bates South Hall Ring
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ABSTRACT: The MIT-Bates facility is pursuing a vigorous spin physics program in its 1 GeV electron storage ring. The combination of polarized beams, polarized internal targets and a large acceptance spectrometer will allow world class measurements of important nuclear physics quantities including G<sup>N</sup><sub>E</sub> and T<sub>20</sub>. Toward this end we have constructed and installed a Siberian Snake to preserve longitudinal electron polarization at the internal target, a laser back-scattering Compton polarimeter to accurately measure the stored electron polarization and an RF coil for resonantly flipping the electron spin which will provide an important systematic check of all measured polarization dependent asymmetries. The status of the stored polarized beam and results from all these polarization handling devices are presented belowParticle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001; 02/2001 -
Article: Investigation of the PCT Performance During Cooler Exp. 25
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ABSTRACT: This research was sponsored by the National Science Foundation Grant NSF PHY-9314783
