What had been observed is that the flashlets became more numerous when a bunch was either not extracted or perhaps mauled by traversing the G10 magnet a bit off time. We won t have much time to get to this beam. Woody and Nick are working on getting the proper optics file into the AtR line to give a match to this year s RHIC injection optics. Nick asks about the X arc vs Y arc optics. Mike Brennan asks if there is any known problem to increasing the spacing between extractions to RHIC from 33.333ms to 66.666ms.
None is known.
Gary Smith, after the meeting confirms that the flags should be happy with twice the spacing. Mike s motivation is that the additional time would allow a simpler, but more time consuming gymnastic, proposed by Joe DeLong, between extractions. The AGS beam would return to the starting radius between extractions. That starting radius would not depend on the bunch pattern in effect. The steering into the AtR would no longer be a function of the bunch pattern.