Production and commissioning of the 2nd BGC Hao Zhang, Edward Martin

Layout of the new setup

Vacuum chamber Lesker Scanwel Vacom Cost Lead time 0002 £869.40 4 weeks £1356.20 6 weeks €1251.00 5 weeks 0004 £3608.73 9-10 weeks £3605.68 €10280.00 7 weeks 0005 £5886.49 £6401.60 €15510.00 9 weeks 0006 £2919.42 8 weeks £3332.80 €7770.00 0007 £3805.63 £4696.00 €9115.00 0010 £1935.05 £2755.20 €4115.00 others £500 £180 VAT(20%) £3904.94 £4459.58 total £23429.66 £26757.46 €48041.00 (£40723.07)*

Optics System Purchased by Serban Ready in the lab Plan to test it in this week in the old setup and transfer to the new setup later

Frame and support RS Pro Aluminum Alloy Strut Size: 80 *80, Length: 2 m or 3 m Price: £97.5 or £143.38 Estimates: 8*3m = £1147 http://uk.rs-online.com/web/p/tubing-struts/8508509/

Nozzle assembly The Drawing is ready to signed off One month lead time 2500 CHF for the 4 nozzle tubes Bellows and flanges and skimmer holders 6000 CHF Pump 2400 CHF Another skimmer holder 3000CHF for test the alignment in CERN

Skimmers Conical skimmer Third skimmer Ordered from beam dynamic Inc. for alignment purpose 16 week lead time from 3 weeks ago Need order 2 additional for CI 1000 USD per skimmer *4 Third skimmer We could polish the ones already in CI 3D printing? Slit in a metal plate (Need simulation support from Marton)

Pumps and gauges Scroll pump 3.3kCHF *4 TMP 300L/s *2 5.5kCHF 300L/s *2 optional Estimation from Gerhard (CERN internal quotation from Pfeiffer)

Vacuum gauge 4 or 5 sensor if cone installed. 1.5kCHF each Controller 2.0k CHF

Jet density scanning system XYZ manipulator 6kCHF We use one from Vacgen Also available from Lesker and UHV design Tube Use standard parts 500 gbp Slit or pin-hole Laser drill ~100 gbp Sensor Hot cathode gauge

Alignment system Laser Reflecting mirror CCD Camera

Cost estimation Vacuum chambers by end of August: 24k GBP Nozzle assemble and conical skimmer: 15k GBP 3rd skimmer: 2k GBP Pumps: 34k or 45k GBP Vacuum Gauge: 9.3k GBP Jet density scanning system: 10k GBP Alignment system: 3k GBP Frame and support by end of August: 2k GBP Total = 99.3 kGBP or 110.3 k GBP

Timeline 1 Sep- 10 Sep: Build the frames, support and rails for new setup 11 Sep- 20 Sep: Assemble the vacuum chamber 21 Sep- 30 Sep: Assemble pumps and sensors 1 Oct -20 Oct: Assemble nozzles, skimmers and alignment system. 21 Oct – 30 Oct: Install the optics system and E-gun 1 Nov – 10 Nov: Pumping and baking November: BIF experiment with new setup