Stefan Grünendahl, Fermilab

Welcome, weary WWW-Wanderer, to my humble home page!
I'm a particle physicist working in the D0 experiment at Fermilab, near Chicago, Illinois.

Pictures:

Platform pics for CTT upgrade installation planning
other platform pics

D0 People (early morning access etc.)

Some physics stuff:

Tevatron + Hera Searches @ PIC2008 (Perugia) (2008-06-28) [proceedings as PDF] [slides as PDF]

Tevatron Searches @ Aspen 2005 (2005-02-10) [Powerpoint] [PDF]

AFE II readout via LVDS and optical ethernet

version 1 (2004-10-28) (LVDS + new crate + optical Gbit ethernet into PC) [PDF] [TXT]

version 2 (LVDS + new crate + Glink into VRB) [PDF] [TXT]

version 3 (2005-3-11) (new smart backplane + optical Gbit into IPM-PC) [PDF]

CTT data quality report (Fresno 2004) [PDF]

CTT upgrade report (Fresno 2004) [PDF]

CFT midterm plans (Fresno 2004) [PDF]

INSTPHYSCOM Working Group 2: L1CALTRK + CTT report (Fresno 2004) [PDF]

The DZERO Fiber Tracker Technical Design Report [PS] [WORD]
The TDR from end of 1997.

The DZERO SciFi Tracking Trigger Technical Design Report (v5) (a document in preparation)

Section 1 [PS] [PDF] [WORD]

Section 2 [PS] [PDF] [WORD]

Section 3 [PS] [PDF] [WORD]

Section 4 [PS] [PDF] [WORD]

Appendix A (MCM map) [PS] [PDF] [EXCEL]

Appendix B (VRB map) [PS] [PDF] [EXCEL]

SciFi L1 status report 26-April-2001
Trigger Meeting (and Commissioning Meeting 2001-5-11).

SciFi Electronics system description 30-November-2000
VLPC Meeting with Boeing in Anaheim, CA.

SciFi L1 status report 21-June-2000
Trigger Meeting in DeKalb.

Cal/Framework/Muon/SciFi L1 status report 20-July-2000
Trigger Meeting.

VLPC - SVX cassette noise data
Noise measurements taken with the SciFi Stereoboard prototype.

VLPC's : what's that?
A brief tour of the D0 fibre tracker VLPC effort. Contrived originally as poster presentation for the URA visit to Fermilab, in the spring of 1996, and used subsequently at the Fermilab DOE Review and at the 11th p-bar-p Workshop, in Albano Terme (Padova), Italy, both also in 1996. (The poster got to go to Italy, not me.)

VLPC's : First Study of a Large Sample of Visible Light Photon Counters
A writeup (html-ized) of my presentation on VLPC characterization for the D0 Upgrade Cosmic Ray Test, given at Como, Italy, in the Fall of 1994. (in case you prefer: [same thing, but in postscript] )

The D0 Level 1 SciFi Trigger
The slides of my presentation on a fast track trigger implemented with FPGA's for the D0 Upgrade, given at Como, Italy, in the Fall of 1998. This page also contains a link to download the powerpoint file.

Just discovered! Fresh from the VAX/VMS crypt:
Prehistoric documents on fiber ribbon making and mounting.

Instruction Manual (version 1.1, postscript, 48 KB)
for the operation of R2D1, the single cassette VLPC cryostat. Sadly, the manual did not prevent a cassette from being destroyed by flooding, when the cryostat toured the NWA test beam area during the summer of 1997...

The overall VLPC cassette/cryostat loss statistics:

Fire: 3

Water: 11

(and postdocs lead by a wide margin over grad students...)

VLPC Cassette Top Layout in the Baseline Approach
A note on sorting 40,000 axial fibers from layers into trigger wedges without using patch panels, mixer boxes, or glue guns.

The Top Quark: Recent Results from CDF and D0
Slides from my presentation at the NLC workshop at SLAC, February 1996.

Jets in D0 [Slides (html)] [paper (postscript)]
A talk given at the QCD96 conference in Montpellier, France, in July 1996.

Direct Photons at D0 and CDF [Slides (html)] [slides (postscript, 4.2MB) ]
A talk given at the 1997 `hadronic Moriond' in Les Arcs, France, in March 1997.

The D0 Detector for Run II [links to slides in html/gif, powerpoint and postscript]
A 25 minute talk given at the February 1998 Fermilab Wine & Cheese seminar on Run II, SUSY, and Higgs.

my publications

more of my publications

my niece reviewing a publication