![]() The instrument was cooled from the operating temperature of -80 C to -113 C. ![]() It took place in the night November 3-4 2002 while observing Mkn 421. The cooling of RGS2 was the first step of the RGS and EPIC MOS cooling campaign. A reduction of operating temperature has been expected to result in a substantial improvement of the instrumental characteristics. During the intervening three years the instruments' performance has been significantly affected by ionizing radiation. Since the beginning of the mission the RGS instruments have been operated at a temperature of -80 C. RGS2 cooling as seen in the energy (PI vs Beta) plot. RGS1 cooling as seen in the energy (PI vs Beta) plot. SSC will rapidly integrate the new calibration files into the data pipeline. Any impact on the delivery of reduced data products from the XMM-Newton Survey Science Centre (SSC) will be kept to a minimum. ![]() The SOC and PI teams are cooperating in the derivation of updated calibration files to cover the new condition of the instruments. The animated gif movies linked to this page illustrate graphically and impressively the benefits derived from the cooling exercise and already apparent in the first data obtained during and after the cooling. The purpose of the cooling is to move important detector characteristics back towards the values which they had earlier in the mission. First results from XMM-Newton RGS and EPIC MOS instruments coolingÄuring November and December 2002 a series of operations are underway in order to lower the nominal operating temperatures of the RGS and EPIC MOS instruments, and to subsequently re-establish their calibration. ![]()
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