HCAL mechanical structure and integration

1. HCAL mechanical structure and integration Mechanical modifications for A(D)HCAL and Tail-Catcher test beam integration investigation for Fermilab MT6-B3/B4 and CERN H6B CALICE Main Meeting

2. Content • Stack Support modification for AHCAL (CMB) • Stack Support modification for DHCAL • Movable Table evolution status • Movable Table modification impact for the close up of the Tail-Catcher • Interaction of the modifications and the Fermilab MTB6 test beam area • Investigation of CERN test beam area H6B • Summary CALICE Main Meeting

3. Stack Support modification for AHCAL (CMB) Stack Support was in production, but there were no CMB design ! CALICE Main Meeting

4. Stack Support modification for AHCAL (CMB) The CMB design required a larger room in the Stack Support Impossible to mount the CMB CALICE Main Meeting

5. Stack Support modification for AHCAL (CMB) Stack was shifted on the stack support by 120 mm Stack shifted CMB space 210 mm CALICE Main Meeting

6. Stack Support modification for DHCAL Try to solve the problem without a confirmed design CALICE Main Meeting

7. Stack Support modification for DHCAL Stack will be shifted on the stack support by additional 120 mm For the use by DHCAL only ! space between stack and side plates 1150 mm 330 mm Critical for module installation ? CALICE Main Meeting

8. Stack Support modification for DHCAL 35° rotation gives up to 300 mm usable space for the DHCAL VFE min. space between stack and side plate 330 mm CALICE Main Meeting

9. Movable Table evolution status Movable Table Version 1 (09.2003) CALICE Main Meeting

10. Movable Table evolution status Movable Table Version 2 (02.2005) CALICE Main Meeting

11. Movable Table evolution status Movable Table Version 2 and Version 3 (same outer dimensions) CALICE Main Meeting

12. Movable Table evolution status Movable Table Version 3 (10.2005) Advanced Capabilities: +-500 mm [-400 mm (AHCAL-35°),-200 mm (DHCAL-35°) on x axis] + 1000 mm/-400 mm on y axis + 35° around y axis CALICE Main Meeting

13. Movable Table evolution status Movable Table Version 3 (10.2005) production schedule • Stack (40 Absorber plates) ready • Stack Support ready (waiting for final surface coating) • Movable Table • Many parts already available • Main design ready by 1. November • Production drawings ready at 11. November • Production tendering start at 14. November • Production starts at 2. January • Installation and test starts at 1. March CALICE Main Meeting

14. Movable Table modification impact for the close up of the Tail-Catcher The distance between the HCAL Stack and the Tail-Catcher should be as close as possible. Limit to close up CALICE Main Meeting

15. Movable Table modification impact for the close up of the Tail-Catcher Distance is reduced down to 265 mm between A(D)HCAL module backplane to Tail-Catcher module backplane for 0° Scan. Very close (10mm between screw heads), high risk for collision! CALICE Main Meeting

16. Movable Table modification impact for the close up of the Tail-Catcher The distance between the HCAL Stack and the Tail-Catcher should be also during a 35° scan as close as possible. Limit to close up CALICE Main Meeting

17. Movable Table modification impact for the close up of the Tail-Catcher Distance is grown up to 750 mm in the centre between DHCAL module backplane to Tail-Catcher module backplane for a 35° Scan. Very close (10mm between screw heads), high risk for collision! CALICE Main Meeting

18. Movable Table modification impact for the close up of the Tail-Catcher Collision detected during the 35° Scan. Very close to the catcher bottom rail, collision with end stop! CALICE Main Meeting

19. Interaction of the modifications and the Fermilab MTB6 test beam area Movable Table Version 3 needs a shift of 250 mm towards the wall. gap reduced from 430 mm to 180 mm CALICE Main Meeting

20. Investigation of CERN test beam area H6B Movable Table Version 3 needs a shift of 250 mm towards the fence. The pass-through will be blocked! Tail-Catcher must move out of the beam Move downstream ? Movable Table Version 3 will have no collision with the wall anymore! CALICE Main Meeting

21. Summary • Stack Support modification for AHCAL (CMB) • Stack Support modified for CMB integration • CMB mechanics design finished soon (production tendering already started) • Stack Support modification for DHCAL • Stack Support modified to have up to 300 mm space for DHCAL VFE on both sides • 35° scan area horizontally reduced (+ 500 mm, -200 mm on x-axis) • Final DHCAL module mechanics design unknown -> installation routine unknown • Movable Table evolution status • Increase of possible scan area to old specification, but still • AHCAL 35° scan area horizontally reduced (+ 500 mm, -400 mm on x-axis) • DHCAL 35° scan area horizontally reduced (+ 500 mm, -200 mm on x-axis) • Very close to final design • Many parts are already at DESY (still inside cost estimate) • Module electronics cabling design is floating • Movable Table modification impact for the close up of the Tail-Catcher • Distance between A(D)HCAL module backplanes to Tail-Catcher module backplane for 0° Scan reduced down to 265 mm • Distance between A(D)HCAL module backplanes to Tail-Catcher module backplane for 35° Scan increased up to 750 mm • High risk for collision • Only small Collisions detected CALICE Main Meeting

22. Summary • Interaction of the modifications and the Fermilab MTB6 test beam area • Movable Table Version 3 needs a shift of 250 mm towards the wall • Only minor additional changes • Safety requirements are still not discussed • Investigation of CERN H6B test beam area • First integration with Movable Table Version 2 and Tail-Catcher shows some problems • Movable Table Version 3 needs a shift of 250 mm towards the fence. No collision with the wall anymore, but blocked pass through. • Movable Table Version 3 can move stack far enough away from the beam, but not the Tail-Catcher • Tail-Catcher needs additional support to reach the beam height • Modification of the Tail-Catcher bottom rail system can give more flexibility of the hole setup inside the H6B area • Detailed integration will worked out soon CALICE Main Meeting