1 / 5

FAR DETECTOR :

FAR DETECTOR : FD live time was 95.7% for cosmics last week (ROP7 problems reported at last week's meeting spilled downtime into this week's report). Dynode threshold calibration also contributed to downtime. All rack filter maintenance completed. NEAR DETECTOR :

bruce-olson
Télécharger la présentation

FAR DETECTOR :

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. FAR DETECTOR: • FD live time was 95.7% for cosmics last week (ROP7 problems reported at last week's meeting spilled downtime into this week's report). • Dynode threshold calibration also contributed to downtime. • All rack filter maintenance completed. • NEAR DETECTOR: • PMT replaced, light leak tracked down and taped up. • PMT expert is here this week to help track down the last subtle issues before beam arrives. • NuMI Horn 1 Replacement Status: • Horn 1 is all hooked up and ready to run. • Last week Thursday, performed the horn alignment beam scan.

  2. BPM x 334.2 BPM y 334.4 Profile 334.9 Toroid 346.6 • Sweep proton beam across horns. • Measure position of proton beam with beam position monitors and secondary emission monitors upstream of the target. • Use measurements to extrapolate the beam position at the location of the horns. BPM x 346.9 BPM y 347.4 Profile 356.1 Baffle 357.0 Target Target and Baffle out 357.7 Horn 1 Drift space Crosshair 359.8 Crosshair 366.4 Horn 2 Crosshair 369.4 Hadron Monitor 1077

  3. Sweap primary proton beam across alignment bars • Target must be out • One on the downstream end of Horn 1 • One on each end of Horn 2 • Also steer beam into horn 1 aperature • Two ion chambers measure particle spray • One downstream of each horn

  4. Horn 1 Proton beam intercepting horn aperature Horn 1 Neck 18 mm 3.5 mm Nub Proton beam intercepting the Alignment bar 2.5 mm separation 2.5 mm separation Proton beam intercepting the Alignment bar 1 mm thickness Preliminary Horn 2 Horizontal Position of Proton Beam (mm)

  5. Schedule for this Week: • Monday: Target module back into chase, hook up z-drive motor cable, hook up water to target, helium lines and electrical, reinstall upstream shielding. • Tuesday: Target module top fiducial survey using laser tracker (am). Advance target into horn LE10 position remotely via ACNET while monitoring position with crane camera. • Wednesday: Install Target T-Blocks and survey plugs. Install R-block installation. Complete air seal/vapor barrier on shielding plug. Start Target Hall clean up. • Thursday: general removal of all equipment, remove workcell hydraulics and secure workcell. Leak check for air leaks on target chase. Search & Secure and run Beam by early evening and align target with proton beam.

More Related