1 / 5

Happenings

Happenings. Lots of bureaucratic stuff Creating short list for USCMS program manager & deputy Costing of the CSC upgrades Creating agenda for general muon meeting “long-range upgrades” next Monday Forward toroids ? Muon tagging to rapidity 5? Etc. Updated bad board count:

amma
Download Presentation

Happenings

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. Happenings • Lots of bureaucratic stuff • Creating short list for USCMS program manager & deputy • Costing of the CSC upgrades • Creating agenda for general muon meeting “long-range upgrades” next Monday • Forward toroids? Muon tagging to rapidity 5? Etc. • Updated bad board count: • At B904 there are 28 bad TMB, 10 prototype TMB (trash? Save for parts?) • Also 5 bad ALCT672, 6 bad ALCT288 • Send them all back to UCLA for repair?

  2. Happenings • GEM demonstrator • In LS1, install 2 chambers GE1/1. •  Lever arm in 1/1 station increased 2.5-5.0x •  Resolution allowed by current 16:1 ganging for trigger is ~8 mrad, need at least 4x finer (see below) for trigger Full Geant Simulation Df(CSC-GEM)~ 3 mrad Dx ~6 mm pT=20 GeV pT=5 GeV

  3. List of 12 OTMB mezz problems • Went over list with Gilmore, some resolved • 1, 3: Problems loading from Eprom and time variations: mezz and base board resistor pull-ups fighting pull-downs on signal DMB_TX33 and DMB_TX{14 or 40}. • 2, 5: Clock choice: 4 new boards choose slave vs. master by choice of resistor • 9: system monitor internal ADC ground connection • Will fix • 11: agreed to add test points or labeled pads

  4. OTMB mezz problems not resolved • 4: claimed we are stuck with clunky loading of PROMs. • 6: hot-running FPGAs: claimed 85 C “normal”, max. spec. is 100 C, failure at 125 C. Safety features: • Can turn on internal FPGA shutoff when adjustable max reached… but not done… • TMB critical temperature sensor likewise… but not done… • Interlock through DCS software to shut off power… but not done • 12: board is too big – nothing to be done. • However, maybe could add smaller extractor screws

  5. OTMB mezz problems: not clear what will happen • 7: suggest bigger heat sink and/or use 10A CRB-type regulators? • 8: some signals can be moved, but he tried to optimize routing FPGA – level translator – connector, keeping to 12-layer PC board • 10: they made TMB base board mods to allow loopback testing, including making some chips 2.5v instead of 3.3v on TMB base board near the backplane • Ugh?

More Related