1. PANDA, GSI, 03.12.2010 Electrically Cooled Ge-Detectors development Status Report I. Kojouharov

2. PANDA, GSI, 03.12.2010 Status of the development of the Single Capsule Cryostat I. Kojouharov The Single Capsule Cryostat The single Capsule cryostat design status: - Conceptual design with single capsule is further elaborated. ◊ - The thermal processes with real components were simulated in order to minimize the thermal leaks and to achieve better cooling. Certain solutions were approved. ◊ -The mechanical design was modified in order to improve the performance ◊ - The X-Cooler II cooling engine is purchased and is tested, performs fine with PopTop capsule ◊ - The mechanical components for the cryostat are to be sent for processing until the end of the Year -... X-Cooler II Electrically Cooled Ge- Detectors development Timeline: - End of December 2010 - Placing order for processing of the mechanical components for the Single Capsule Cryostat - February 2011- Assembly and test of the Single Capsule Cryostat. Delivery is foreseen end of February. Courtesy of J.Kojouharova

3. PANDA, GSI, 03.12.2010 Electrically Cooled Ge- Detectors development Status of the development of the Capsule I. Kojouharov The capsule mechanics, T.Engert The crystal mechanical processing test - dummy Ge(Li), Nov.2010, T.Engert The Capsule design status: - Capsule conceptual design is done, patent is pending ◊ - HPGe crystal is purchased ◊ -The mechanics manufactured ◊ - Test with dummy Ge(Li) crystal is done in order to evaluate the quality and the safety of the processing. Another test with different fixing is coming ◊ -... Timeline: - January 2011 – Another test with different crystal holding. - February 2011 – Processing of the inner hole. - March 2011 – Lithium diffusion. - Mai 2011 – Final shape processing. - June 2011 – Implantation and passivation. - September 2011 – Test without welding. - October 2011 – welding and conditioning. - End 2011 – test Problems:- Mechanical processing capability – we do not have sufficient priority to have it at GSI, search for outsourcing. - Uncertainty for the contacting processes timeline. - Uncertainty for encapsulation processes timeline. The crystal geometry

4. PANDA, GSI, 03.12.2010 Status of the development of the triple cryostat I. Kojouharov Electrically Cooled Ge- Detectors development The HyperTriple Detector – the design concept The cold frame with 3 capsule models Thermal Shield Cryostat Cup Problems: – Mechanical processing capability – we do not have sufficient priority to have it at GSI, search for outsourcing. We use the same machine for HPGe processing and for complex metal shapes processing. – The design was postponed due to priority given to other projects and – The design was postponed due to priority given to other projects and unexpected functional problems with the Single Capsule Cryostat (electrically cooled).

5. PANDA, GSI, 03.12.2010 I. Kojouharov Electrically Cooled Ge- Detectors development Thank you