24.7.03TRD status meeting GSI Clemens Adler TRD (Pre-)Production Status New Results/Experiences Problematic issues Production Plans Timescale.

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Presentation transcript:

TRD status meeting GSI Clemens Adler TRD (Pre-)Production Status New Results/Experiences Problematic issues Production Plans Timescale

TRD status meeting GSI Clemens Adler Voltage Divider Change Was: 5.85 MOhm -> field cage current =360 uA Double resistance: 11.7 MOhm -> field cage current = 180 uA Compares to 0.5 uA Ion back drift current Savings in Power Supplies?

TRD status meeting GSI Clemens Adler Leak Tightness of Prototype Leak rate (determined for PRR): 1,5mbar*l/h Gas sniffer shows leak in Padplane: ->some contact hole not glued No other significant leaks found

TRD status meeting GSI Clemens Adler Winding Frame New Winding Frame Design tested: seems very stable little contact area-> wire slips easily Probably design change necessary...

TRD status meeting GSI Clemens Adler Soldering Hotbar reflow soldering machine is ordered Soldering will be done at IKF Frankfurt Soldering on bare copper seems feasible Tests at Panacol planned Problem: need >10 micron tin to solder: -Padplane: silkscreen solderpaste then reflow in oven -Cable: apply tin by dipping

TRD status meeting GSI Clemens Adler Soldering cont. More open questions: -Positioning of Cables: Aluminum template which gives Cable position-> fix with Tesa -Storage of Padplanes (IKF or Hd)? -Table for Soldering machine: build by IKF

TRD status meeting GSI Clemens Adler Padplane Test Setup Measurement for shorts/contact by capacitance measurement. Principle works, but too much noise. Needed: Hardware

TRD status meeting GSI Clemens Adler Production Plans Material for chamber frame arrives next week Start production of chamber frames+radiators Start wiring as soon as ledges/ windingframe/ wire ready. Store frames with wires until padplane panel ready Start bonding as soon as padplanes are available Final assembly when Fischer panel is available

TRD status meeting GSI Clemens Adler Timescale