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Sept. 30, 2004 NIKHEF-1 Hans de Vries Status NIKHEF Mechanics Secondary vacuum box Bellows Vacuum system CO 2 cooling: Bart Verlaat.

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Presentation on theme: "Sept. 30, 2004 NIKHEF-1 Hans de Vries Status NIKHEF Mechanics Secondary vacuum box Bellows Vacuum system CO 2 cooling: Bart Verlaat."— Presentation transcript:

1 Sept. 30, 2004 NIKHEF-1 Hans de Vries Status NIKHEF Mechanics Secondary vacuum box Bellows Vacuum system CO 2 cooling: Bart Verlaat

2 Sept. 30, 2004 NIKHEF-2 Hans de Vries System overview Sec. vacuum box Rectangular bellow Vacuum vessel on stand

3 Sept. 30, 2004 NIKHEF-3 Hans de Vries Vacuum vessel Is being produced Thermo Electron Corporation Delivery: November Will be equipped with silicon insulated heaters from Watlow

4 Sept. 30, 2004 NIKHEF-4 Hans de Vries Center frame Accuracy and reproducibility: 2 μm; Complete opening/closing: 2 minutes

5 Sept. 30, 2004 NIKHEF-5 Hans de Vries Detector Lifting Device

6 Sept. 30, 2004 NIKHEF-6 Hans de Vries Transport trolley

7 Sept. 30, 2004 NIKHEF-7 Hans de Vries Detector installation rail

8 Sept. 30, 2004 NIKHEF-8 Hans de Vries Secondary vacuum box

9 Sept. 30, 2004 NIKHEF-9 Hans de Vries Secondary vacuum box (2)

10 Sept. 30, 2004 NIKHEF-10 Hans de Vries Measurements on box Mechanical performance –Tolerances, accuracy Vacuum performance –Leak rate Mechanical response to pressure differences Influence of torlon coating –Bake-out NEG coating (November)

11 Sept. 30, 2004 NIKHEF-11 Hans de Vries NEG coating The detector box in the vacuum vessel

12 Sept. 30, 2004 NIKHEF-12 Hans de Vries NEG coating (2) NEG coating will be tested at CERN in November

13 Sept. 30, 2004 NIKHEF-13 Hans de Vries Production bellows

14 Sept. 30, 2004 NIKHEF-14 Hans de Vries Testing of Bellows

15 Sept. 30, 2004 NIKHEF-15 Hans de Vries New bellows design Old camera bellows

16 Sept. 30, 2004 NIKHEF-16 Hans de Vries PLC programming Vacuum system SIMATIC manager step7 version V5.2+SP1 Simulation test conditions The vacuum simulator equipped with Altera EP20K200EQC240-3 chip, program language is VHDL

17 Sept. 30, 2004 NIKHEF-17 Hans de Vries Vacuum control cabinets

18 Sept. 30, 2004 NIKHEF-18 Hans de Vries Vacuum system

19 Sept. 30, 2004 NIKHEF-19 Hans de Vries Scheme evacuation set-up 400 l RF box Primary vacuum volume: 1700 liter Secondary vacuum volume: 500 liter Simulation volumes 1600 liter and 400 liter -Two vessels for NEG coating -Test set-up for integral leak test of bellows and RF box

20 Sept. 30, 2004 NIKHEF-20 Hans de Vries Membrane switches Modifications of the PS laser welded membrane - ref. vacuum separated from measuring chamber

21 Sept. 30, 2004 NIKHEF-21 Hans de Vries Membrane switches

22 Sept. 30, 2004 NIKHEF-22 Hans de Vries Valves

23 Sept. 30, 2004 NIKHEF-23 Hans de Vries Vacuum Test System Beam vacuum 1600 l Detector Vacuum 400 l PUMP ACP28 Venting Restrictions Membrane Switches Schakelaars MKS 120AA MKS 120AD Nupro Valves

24 Sept. 30, 2004 NIKHEF-24 Hans de Vries Vacuum test set-up

25 Sept. 30, 2004 NIKHEF-25 Hans de Vries Follow up evacuation set-up Assemble the set-up with the final parts Determine the resistance(conductance limiter) for RS 301 and RS 302 During evacuation test : registration of dP Optimize the conductance limiter with the dP Translate the result to the final experiment

26 Sept. 30, 2004 NIKHEF-26 Hans de Vries Venting procedure Total venting time: 90 minutes Actions membrane switches: 50 times

27 Sept. 30, 2004 NIKHEF-27 Hans de Vries Evacuation Total evacuation time: 300 minutes Actions membrane switches: 7 times

28 Sept. 30, 2004 NIKHEF-28 Hans de Vries Summary Good progress on realization components Vacuum vessel has been ordered: delivered in November New foils for secondary vacuum box have been produced New design bellows Vacuum system with membrane switches looks promising NEG coating will be tested: November


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