Frank HartmannIEKP

TEC Meeting July 03

Ring 6 mechanical Qualification

In a nutshell: rel. precision agreement (Aa-Ka): 3-5µm (rot.)abs precision agreement (Aa-Ka): 30-50µm

Problems with the zero-positioning! (circle-ellipse-hole!?! in the graphite)

One example:

Frank HartmannIEKP

TEC Meeting July 03

Circle hole in graphite & bush

Round hole bush

Frank HartmannIEKP

TEC Meeting July 03

Ellipse hole

Another focus!

Frank HartmannIEKP

TEC Meeting July 03

Ring 4 mechanical qualification

• 8 R4 modules from Lyon KA

Already measured! Aachen for crosscheck (Braunschweig yesterday)

• To mention : • 4 sensors are within 10µm vs. rot.

• 2 sensors are +60µm off vs. rot.

• 2 sensors are -60µm off vs. rot.

– ?? 4 sensors/plate 4 in the “middle”, 2 “left”, 2 “right” ??

Frank HartmannIEKP

TEC Meeting July 03 5

pt100 pt100

Module Ring 5 (front-back)

normal

stereo

Frank HartmannIEKP

TEC Meeting July 03

Dummy petal assembly

KA-dummy-petal-coolingTASK-FORCE

Frank HartmannIEKP

TEC Meeting July 03

Ready

Detail: bridge

IR Leds to inject current to simulate irrad. To investigate cooling at final power consumption! (=950 & 1050nm)

IR LedsIR Leds

Frank HartmannIEKP

TEC Meeting July 03

Cooling tests in Stra

Frank HartmannIEKP

TEC Meeting July 03

R7• 2 assembled (1 for KA, 1 for Stra)• Mechanics: good, stiff,

tolerance Si-graphite ~500µm

• 1st run: no problemsAll QTC defects found.leakage current @ 3.6µA (250V)

• 2nd run: 1 NEW PINHOLE leakage current @75µA (250V)

• 3rd run: 1 ADD. PINHOLELeakage current @ 400µA (250V)

Frank HartmannIEKP

TEC Meeting July 03

R7 prototype1 in KA – 1 in Stra

0 100 200 300 400 500 6001E-9

1E-8

1E-7

1E-6

1E-5

1E-4

leakage current on module (far sensor)

Sin

gle

strip

leak

age

curr

ent [

A]

Stripnumber

Known shorts

Known pinhole

3rd run:Shorts, pinholes: bonds removed

1st run

3d run

Add. Pinhole (see Tonys talk)

350µA (one strip)

70µA (one strip)

1st run

Frank HartmannIEKP

TEC Meeting July 03

Strip defectsStrip 19, pinhole pop-up @ run 3Strip current @340µA

Strip 105 new pinhole In 2nd run

QTC pinhole!

QTC short

Frank HartmannIEKP

TEC Meeting July 03

Frank HartmannIEKP

TEC Meeting July 03

R5 irrad hooked to hybridall meas @ -12°C

Cosmic runSome hot channels flagged