The Prototype of the NA61 Vertex Detector Setting

The Prototype of the NA-61 Vertex Detector Setting the stage M. Deveaux, Goethe University Frankfurt

Outline 1. Working packages of University Frankfurt 2. Considerations on mechanical integration 3. Status and plans 4. Summary and conclusion M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 2

Requirements vs. sensors (reminder) Sensor technology of choice CMOS Monolithic Active Pixel Sensor MIMOSA-26 AHR NA-61 Hybrid CCD MIMOSA-26 < 5 µm 30 µm <5 µm 3. 5 µm few 0. 1 X 0 ~ 1% X 0 ~0. 1% X 0 0. 05% X 0 Rad. Tol. (1) 3 x 1010 neq/cm² >1014 neq/cm² <109 neq/cm² >1013 neq/cm² Rad. Tol. (2) ~1 krad >10 Mrad ~1 Mrad > 300 krad Time res. ~100 µs 20 ns ~ 100 µs 115. 2 µs Resolution Material Budget (1) non ionizing dose per week beam on target (2) ionizing dose per week beam on target All numbers extrapolated from CBM simulations assuming 2000 Au+Au coll. /s 3

Working packages of IKF: Mechanical integration + Carbon fibre ladder Sensors + cables + (In picture: CBM-STS) Water = MVD Components are to be delivered by NA-61 partners M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 4

Some elementary issues Size: 21. 2 x 10. 6 mm 2 Bending radius: ~30 cm + =? Gluing on a simple ladder will be challening (too few support) M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 5

Some elementary issues Low power area Readout sequencer Sensor array (21200 x 10600 µm²) Col. discriminators Slow control interface (JTAG) High power area Zero suppr. computer Output memory Bias DACs (Threshold generation…) The energy consumption of MIMOSA-26 is not homogenious M. Deveaux, NA-61 Collaboration Meeting, May 2013 6

Some elementary issues Landing points for cables/bonding • Need landing point for cables (glued there) • Need stable support for bonding Final product is very fragile • Consider handling, storage, transport tools in time M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 7

A non-mature idea on integration Heat conductive carbon fibre 1. Heat conductive carbon fibre 2. Drill holes to reduce material 3. Glue sensors 4. Glue cables 5. Wire bonding Advantage: • Bonding on stable and uniform support • Sensor and cable gluing procedure known M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 8

A non-mature idea on integration Cooling pipe Glue Heat conductive carbon fibre M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 9

A non-mature idea on integration Heat conductive carbon fibre Coolant pipe ü Cooling pipe located below “hotest” area of sensors Concept not yet mature Propose dedicated visio together with IKF sensor integration experts M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 10

Preparation of test and integration of the sensors Gray room / Clean room being completed at IKF Silicon storage (dry nitrogen) Bonding machine M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 11

Semi automatic probe testing machine Optical and EM- shielding M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 12

Probe card for MIMOSA-26 First probe cards delivered • Setup procedure (CBMproject) • Do first tests with B-grade sensors (CBM-project) • Perform real tests (NA-61 Project) M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 13

Summary and conclusion The IKF feels commited to perform the tests of the MIMOSA-26 and their mechanical integration to ladders A non-mature integration concept was shown. It should be itterated in a dedicated meeting among experts Setup of laboratory and tools is under preparation (synergies with CBM). Work may start soon after funding is available. M. Deveaux, NA-61 weekly meeting, 27. Aug 2013 14