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The H1 Luminosity measurement at HERAII |
| Reference |
N.N., to be presented at ICHEP 2002, Summer 2002 |
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| Contact |
Arnd Specka |
| Abstract |
At HERA2, luminosity is determined online and bunch by bunch by measuring the bremsstrahlung spectrum from e-p-collisions. The H1 collaboration has built a completely new luminosity system in order to sustain the harsh running conditions after the fourfold luminosity increase. Namely the higher synchrotron radiation doses and the increased event pile-up effects have governed the design of the two major components, a quartz-fiber electro-magnetic calorimeter, and a fast readout electronics with with an on-line energy histogramming DAQ at a rate of 500khz. The preliminary measurement of specific luminosity from the startup phase of HERA2 is presented. |
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