RAD-HARD LUMINOSITY MONITORING FOR THE LHC

Luminosity measurements at the high luminosity points of the LHC are very challenging due to the extremely high radiation levels in the order of 180 MGy/yr. We have designed an ionization chamber that uses a flowing inorganic gas mixture and a combination of metals and ceramics. With such a choice, an additional challenge is achieving the necessary speed to be able to resolve bunch- by-bunch luminosity data. We present the design, analysis and experimental results of the early demonstration tests of this device.