Sensitivity to Nano-Tesla Scale Stray Magnetic Fields

We consid Linear Collider Collaboration Tech Notes Abstract This note documents a set of expressions used to explore the issue of whether or not it is reasonable to consider a conventional positron source for a Tesla formatted beam. The critical issue is that of energy deposition in the conversion target and the comparison of the induced stress with the ultimate tensile strength of the target material. Since the length of the incident beam pulse is large in comparison to the ratio of beam size to the speed of sound, the concurrent pressure pulse dissipates in a time short compared to the overall pulse duration and one is left with only the Sensitivity to Nano-Tesla Scale Stray Magnetic FieldsThis note documents a set of expressions used to explore the issue of whether or not it is reasonable to consider a conventional positron source for a Tesla formatted beam. The critical issue is that of energy deposition in the conversion target and the comparison of the induced stress with the ultimate tensile strength of the target material. Since the length of the incident beam pulse is large in comparison to the ratio of beam size to the speed of sound, the concurrent pressure pulse dissipates in a time short compared to the overall pulse duration and one is left with only the Sensitivity to Nano-Tesla Scale Stray Magnetic Fields J. Frisch, T.O. Raubenheimer, P. Tenenbaum June 2004 Stanford Linear Accelerator Center Stanford University 2575 Sand Hill Road Menlo Park, CA er the NLC's sensitivity to stray magnetic fields in the nanotesla regime. Sensitivity to Nano-Tesla Scale Stray Magnetic Fields J. Frisch, T. O. Raubenheimer, P. Tenenbaum LCC-Note-0140 June 7, 2004 Abstract We consider the NLC’s sensitivity to stray magnetic fields in the nanotesla regime.We consider the NLC’s sensitivity to stray magnetic fields in the nanotesla regime.