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detectors [2017/06/19 18:22]
pereira [Ionization chamber]
detectors [2018/02/15 12:44] (current)
pereira [Cathode Readout Drift Chambers (CRDC)]
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 ===== Cathode Readout Drift Chambers (CRDC) ===== ===== Cathode Readout Drift Chambers (CRDC) =====
-Two Cathode Readout Drift Chamber (CRDC) are used  to measure the transversal positions and angles in  the [[Stations#​Focal Plane station|focal plane]]. The first detector (CRDC1) is located at the nominal optical focal plane, and it is separated 1 m from the second downstream detector (CRDC2). ​ Each detector has an active depth of 1.5 cm, an active area of 26 cm (non-dispersive direction) x 56 cm (dispersive direction), and [[Gas handling system|it is filled]] with a gas mixture consisting of 80% CF<​sub>​4</​sub>​ and 20% C<​sub>​4</​sub>​H<​sub>​10</​sub>​ at a typical pressure of 40 torr. The [[HV bias#​CRDCs|operating high power]] depends on the charge of the measured nuclei. A schematic view of a CRDC can be seen in the figure below.+Two Cathode Readout Drift Chamber (CRDC) are used  to measure the transversal positions and angles in  the [[Stations#​Focal Plane station|focal plane]]. The first detector (CRDC1) is located at the nominal optical focal plane, and it is separated 1 m from the second downstream detector (CRDC2). ​ Each detector has an active depth of 1.5 cm, an active area of 26 cm (non-dispersive direction) x 56 cm (dispersive direction), and [[Gas handling system|it is filled]] with a gas mixture consisting of 80% CF<​sub>​4</​sub>​ and 20% C<​sub>​4</​sub>​H<​sub>​10</​sub>​ at a typical pressure of 40 torr. The detector frame has a volume of 68 cm (dispersive) x 38 cm (non-dispersive) x 10.3 cm (depth). The [[HV bias#​CRDCs|operating high power]] depends on the charge of the measured nuclei. A schematic view of a CRDC can be seen in the figure below.
  
 {{:​wiki:​crdc-drawing.jpg?​600|Schematic view of the two S800 CRDCs.}} {{:​wiki:​crdc-drawing.jpg?​600|Schematic view of the two S800 CRDCs.}}
detectors.1497910947.txt.gz ยท Last modified: 2017/06/19 18:22 by pereira