1 / 16

HLab meeting

HLab meeting. 1/13/09 K. Shirotori. Contents. SksMinus status Drift chambers Timing counters Veto counters Others. Drift chambers. Drift chambers for SksMinus. SDC3&4 : BD chamber ×2 Large DC camber : 2 m×1 m (x,x,u,u,v,v) SDC2 : Old SKS chamber Repair in Tohoku.

renata
Download Presentation

HLab meeting

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. HLab meeting 1/13/09 K. Shirotori

  2. Contents • SksMinus status • Drift chambers • Timing counters • Veto counters • Others

  3. Drift chambers

  4. Drift chambers for SksMinus • SDC3&4 : BD chamber ×2 • Large DC camber : 2 m×1 m (x,x,u,u,v,v) • SDC2 : Old SKS chamber • Repair in Tohoku • SDC1 : New construction • Not completely finish the design work…

  5. Drift chambers status • BD chambers are almost ready. • ~300 mm(rms) position resolution • 99% efficiency ⇒To design and product frame • Broken wires of SDC2 are finished to be repaired. • Signal check and TDC data taking • Frame design • SDC1 is under construction… • Discharge problem on liquid gasket ⇒Replace the rubber gasket • How about design ?⇒Frame confliction to Hyperball-J frame

  6. Timing counters

  7. Timing counters for SksMinus • STOF : Using SKS TOF scintillation counter • 2 m×1 m TOF wall • Present 15 segments + new 17 segments • Bought by KEK fund • BH2 : Time zero counter • ~1 MHz counting rate ⇒1 segment counter

  8. Timing counters status • STOF • New segments : Need 34 PMTs • PMT check Finished : 71 PMTs (78 PMTs from BNL⇒7 are used for open campus) • Frame design • BH2 • Scintillator : Available one • PMTs : Booster PMT (old SKS BH2 PMT)

  9. Veto counters

  10. Veto counters for SksMinus • SAC & BAC : (K-, p-) trigger • Aerogel cherenkov counter • M. Sato working • SP0 : K-→p-p0 event veto • T. Otani working • SMF : K-→m-n event veto • Iron shield

  11. Veto counters status • Aerogel cherenkov counters • Radiator (Aerogel) are bought by Kyoto Univ. fund. • Fine mesh PMTs are bought by Osaka RCNP fund. ⇒Production stage + Fiber readout test parallel ⇒Scintillation board (ITA) test @ LNS • SP0 • Scintillation counters : For E559 range counter • Lead plates are ordered. • Frame design in progress • To check by prototype (one layer) ⇒ Production stage • SMF • Scintillation counters : For BNL BT ⇒Need to cut : 2 m ⇒1.2 m • Iron shield ⇒Request for support of KEK

  12. SMF iron block shield Block-A 100 cm×50 cm×50 cm Assemble Block-B 200 cm×100 cm×70 cm wall (Image) 100 cm×50 cm×20 cm

  13. Iron block design ・Block-A 100 cm×50 cm×50 cm×5 ・Block-B 100 cm×50 cm×20 cm×3 Borrow from KEK parts Type-1 In the experiment, we use Type-1 (1.1 GeV/c beam) or Type-2 (1.3, 1.5, 1.8 GeV/c beam) configuration. Type-2

  14. Others

  15. Other components status • Targets • 4He target was ordered. : ~\4,000,000 • Li2O : Company was found. • 10B and 11B : modified old target used in BNL-E930 for the beam profile at K1.8 • 19F : Teflon ((CF2)n) + Design of target stage with BAC and SAC • He bag • Design and order (SKS group)

  16. Summary ○ SDC3&4 : Repair finished ⇒ Frame ○ SDC2 : Repair almost finished ⇒ Frame × SDC1 : ?? ○ STOF : Design and construction (by KEK ?) ○ BH2 : Construction (scintillator + booster PMT) ○ SAC&BAC : Construction ○ SP0 : Design finalize ⇒construction × SMF : Iron shield borrow, frame, scintillation counter cutting △ Targets : under construction あとは人手。。。Hyperball-Jもあるので。。。

More Related