SLAC PEP-II
BABAR
SLAC<->RAL
Babar logo
HEPIC E,S & H Databases PDG HEP preprints
Organization Detector Computing Physics Documentation
Personnel Glossary Sitemap Search Hypernews
Unwrap page!
Det. Search
Who's who?
Meetings
FAQ
Images
Archive
Systems
Performance
Intern. region
Vertex Tracker
Drift chamber
DIRC
Calorimeter
IFR
LST
Magnet
Electronics
Trigger
Operations
Run Coordination
Contact Experts
Shift Takers Info
Operations Manual
Electronic Logbook
Ops Hypernews
Shift Signup
Check this page for HTML 4.01 Transitional compliance with the
W3C Validator
(More checks...)

   
Prev Next


Date: January 5, 2008
Shift Taker: Chris West
-----------
General Features:

Masked out fiber 3-10 C. Runs 77918-77924 are run with no bias voltage for 4-9! After run 77924, 4-9 is slightly noisier because one diode is masked for each channel.

(theta,phi)
Warm crystals in hitmap          (52,63), (57,63), (56,64)
Warm crystals in 0.01 GeV hitmap (32,64), (17,43), (30,45), (32,46)
Warm crystals in 0.1 GeV hitmap  (32,64), (30,45), (32,46)
Warm crystals in 1 GeV hitmap      

Cool crystal  in hitmap          
Cool crystal  in 0.01 GeV hitmap 
Cool crystal  in 0.1 GeV hitmap  (29,85)
Cool crystal  in 1 GeV hitmap    (3,43)

77906: Cosmics. OK.
77907: High backgrounds. Blob at 6600 ns.
77908: High backgrounds. 4e-4 OOO/OOS and 1e-4 FLINK(ABC)_TimeOut in 0-5
77910: OK.
77911: High backgrounds. Blob at 6600 ns.
77912: OK.
77913: High backgrounds. Blob at 6600 ns. 4e-4 OOO/OOS and 1e-4 FLINK(ABC)_TimeOut in 0-5
77916: High backgrounds. Blob at 6600 ns. 4e-4 OOO/OOS and 1e-4 FLINK(ABC)_TimeOut in 0-5
77917: OK.
77918-77924: Bias voltage off in 4-9! Shows up in no cut and 0.01 GeV hitmap. Spike in phi projection of 0.01 MeV hitmap. Dip in 0.1 MeV hitmap at phi=3-5. 4-9 energy profile flat at energy 5 MeV. 
77922: Also has 4e-4 OOO/OOS and 1e-4 FLINK(ABC)_TimeOut in 4-10.
77924: Blob in timing plot at 6500 ns.
77931-77932: Cosmics run. Finally back to normal! 4-9 is slightly noisier, of course.
77933: Cosmics run. Only 4 pages. Why is it only cosmics runs that have four pages?
77934: Cosmics run. OK.
77935: Cosmics run. Only 4 pages. OK.
77936-77945: Cosmics run. OK.
77946: Back to physics (and high backgrounds!). 4e-4 OOS/OOO and 1e-4 FLINK(A,B,C)_TimeOut in 0-5.
77947: Kinda ridiculous backgrounds. Blob at 6600 ns.
77948: High backgrounds.
77949: Blob at 6600 ns.

Crystal Spectra:
Features in severity of dips plot in 4-9 as well as in the last crystal module of 6-10.

Lightpulser:
27 dead channels, 0 channels out of time. Updated on: 05-January 2008 12:59, 19:33 PST
12:594-9 bias is off! Noisy as hell!
19:334-9 back to normal.


 

  Links

  • Shift Report Index
  • Back to the Shifter instructions