High Energy High Intensity Hadron Beams

This report contains the final proceedings of the 2nd meeting in the framework of the CARE-HHH-ABI networking, held 1.-2. December 2004, in Lyon, with the subject: "DC current transformers and beam-lifetime evaluations". The European Community wants to reinforce the communication between scientific laboratories of similar nature in the field of high energy high intensity hadron beams. For this reason a so called " networking " program has been defined, which over the next five years will join instrumentation experts in order to exchange knowledge on well defined subjects. (CARE-N3 networking for HHH, i.e. for High Energy, High Intensity Hadron Beams). These events are not in concurrence with more general instrumentation workshops like DIPAC or BIW. The second event of the Work package ABI (advanced beam diagnostic) was proposed by Kay Wittenburg (DESY), Andreas Peters (GSI) and Hermann Schmickler (CERN) with the following topic: " Beam intensity measurements and lifetime calculations " The purpose of the event is:-to review the present technologies available for the measurements of the integral (DC) beam intensity-to isolate individual physical or technological limitations in the performance of these devices-to discuss new ideas for those measurements-to define R&D programs for those new concepts-to discuss specific algorithms used to calculate lifetimes from the beam current measurements For these objectives we consider important the experience from the major three European laboratories working with hadron beams (DESY; GSI; CERN) and experience from SNS and BNL in the US (RHIC machine). The experience was complemented by one or two participants from an industrial company (Bergoz Instrumentation)