Observation of coasting beam at the HERA Proton--Ring
  We present data collected with the HERA-B wire target which prove the existence of coasting beam at the HERA proton storage ring. The coasting beam is inherently produced by the proton machine operation and is not dominated by target effects. 
HERA-B Target Group, K. Ehret, M. Funcke, S. Issever, T. Jagla, T.   Lohse, S. Schaller, S. Spratte, M. Symalla, Y. Vassilie...