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E906 SeaQuest Status Update: Experimenters Meeting and Beam Delivery Plans

The E906 SeaQuest project is set to deliver 120 GeV protons to NM4 and make necessary modifications to the 800 GeV beam line. Key updates involve replacing MUBEND cryomagnets, reinstalling V100, and making structural changes, including removing the kaon production target. E906 is requesting 5 seconds of slow spill beam every 60 seconds to total 1e13/minute, beginning at low intensity. Progress includes magnet renovations and electrical upgrades. Safety approvals and control systems need attention. A low-intensity beam test is planned prior to summer shutdown.

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E906 SeaQuest Status Update: Experimenters Meeting and Beam Delivery Plans

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  1. Beam to E906/SeaQuest Status All Experimenters Meeting Chuck Brown – 3/22/10

  2. Deliver 120 GeV protons to E906 NM4 Encl-B Encl-C Encl-G1 Encl-G2 NM1 NM2 NM3 • Modify 800 GeV beam line to NM2 in order to transmit 120 GeV protons to NM4 (KTeV Hall). • Replace MUBEND cryomagnets in G2 with 6 renovated EPB dipoles • Reinstall V100 in Encl-C with 2 renovated EPB dipoles • Add a 3Q120 quad, Q105, in Encl-C • Remove kaon production target in NM2 • Remove collimators and sweeper dipoles in NM2 and NM3 Magnetized Iron Dump Magnet

  3. Beam Structure • E906 requests 5 sec. of slow spill beam every 60 sec, at an intensity of 2e12/sec, total 1e13/minute • The experiment will start at low intensity to commission the detector • May not be able to reach full intensity until after the Tevatron stops running due to losses in the P3 line

  4. Progress • Design (Brown/Russell) • TRANSPORT simulation of beam line with subsequent generation of detailed Beam Sheet (complete set of survey coordinates) is almost complete • Magnet renovation, TD (Kiemschies) • 14 EPB dipoles removed from Switchyard and sent to TD in February for renovation • Need 6 for MUBND (G2) and 2 for V100 (Encl-C) • 4 dipoles already renovated, 5 more in progress

  5. Progress, cont. • Mechanical (Petkus) • Clean out MUBEND from G2 in March/April • Install V100 in late April (MTest off) • Complete G2 installation in May? • PPD will help modify NM2/NM3/NM4 in April & May? • Dump magnet being assembled now in NM4 • LCW (Slazyk) • LCW systems in G2, N01, NM2/3/4 need to be renovated, turned on and checked out? • Delayed for lack of engineering and tech manpower?

  6. Progress, cont. • Electrical (Lentz) • Existing power supplies rehosed and checked – March/April? • V100, Q105, G2 dipoles powered – May? • New switcher supplies for trims needed ?? • NM3AN (dump magnet) and NM4AN (KTeV/E906 analysis magnet) powered and tested - June? • Interlocks (Worel) • Upgrading interlocks in G2, NM1(N01) and NM2 proceeding; NM3 and NM4 to be renovated in April/May? • See document by Chuck Worel reviewing E906 interlocks

  7. Progress, cont. • Controls (Kuplic) • Controls to N01, NS7, NM4 need check out? • Solid target wheel for test run obtained from PPD • Instrumentation (Tassoto/Frank) • New SWIC controllers ordered, parts are in, need Internet in NS7? • Some SWICs need replacing, all need testing? • Safety approvals (Gerardi) • Need to update KTeV shielding assessment, SAD?

  8. Goal • A short, low intensity, beam test before summer shutdown. • On 3/8/10, Paul Reimer presented the E906 status and reported they will have most of their detectors ready for a test run by late June. • Problem: • We will need more engineering and tech help from AD than has been available so far (according to the Department Heads).

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