High resolution Kaon Spectrometer (HKS)
The HKS magnets have been manufactured at Mitsubishi Electric Co. and the field mapping is under way. In the following sections, the design principle and the performance of the magnets are described.
Sieve Silt and Collimator
HDC1 and HDC2 were fully commissioned during E01-011 run in 2005. After the HKS runs, those chambers were used for the G0 experiment. Now they are now supplied voltage to check if anything is changed after E01-011.
The following document generalize the preliminary "How-To" of both HKS and HES drift chamber. Media:HKS_HES DC.pdf
The cable map is the relationship between the lable of cable and the Amplifier-Discriminator card, The wire map is the relationship between TDC channel and wire number.
Except for HTF1Y. No modification will be made. HTF1X, 2X are fully commissioned in E01-011.
It was found that 1~6% of events are lost due to the space between HTF1Y counters. In order to recover the loss, we renew the design of light guide and make them staggered configuration. Light guides are designed and now fabricated in Japan. HTF1Y with new lightguides will be assembled in January 2009.
An aerogel Čerenkov detector is used for pion suppression.
We have finished lucite test before going to hall, and the document is shown in the attached file.
The Geometry of Lucite Plane on HKS platform: