1. Preparation for CERN test beam
H6 test beam area in Prevessin

2. First Draft schedule for CERN
09/03/06
These slides are on:

3. For us this means: Jul 3 - Jul 8 ECAL/HCAL installation at CERN
Jul Jul ECAL/HCAL out of the beam line and restricted access
time for LED checks, mapping, pedestal studies
Jul Aug 8 ECAL stand alone
(period 1) HCAL will be on!
electrons with ECAL in front, first pion showers
Aug Aug 23 parasitic calibration with muon or beam data
Aug 24 - Sep 3 HCAL stand alone
(period 2 ) suggested run with HCAL+ECAL too
general understanding of beam spectra, rates, noise
check angular scan procedure
Sep 4 - Sep 19 ECAL/HCAL out of the beam line and restricted access
Sep 20 - Oct parasitic calibration with muon or beam data
Oct Oct 24 Combined ECAL + HCAL
(period 3) high statistics data taking for MC comparison
program based on understanding during period 2

4. Data taking plan (before period 2)
Full debug of mapping, noise, LED system
Inter-calibration of all channels with LED system
MIP calibration with muon from:
beam dump / pion beam / cosmics (if rotation possible)
Act as “tail catcher” to the ECAL during electron beam run
First hadron shower if ECAL wants
Goal: be on as much as possible to understand detector behaviour
Finish to update to online monitoring plots, documentation, …

5. Data taking plan (period 2)
Define the energy and angle range to scan:
(90-Q)
From Vasiliy Morgunov:
Constraints: CERN energy (5) 10 – 205 GeV
rotation possible with stage Q = 0 – 35 deg

6. Data taking plan (period 2)
Minimum plan: Matrix of combination with ~ 100k ev per point
5 steps in energy
4 steps in angle
ECAL + HCAL and HCAL alone
electron and pion beam
Very conservative, in the reminder: more energies (try 5 GeV if possible),
E [GeV]
Q [deg] 10 18 25 50
100
e/p 5 15 35
More detained document + plan available soon under:

7. Data taking speed & beam info
The DAQ rate with 500 ev buffering tested for full ECAL+HCAL r/o
> 100 Hz (120 Hz achieved, can be improved)
CERN beam spill structure:
4 s beam – 12 s spill separation
for a 100 Hz DAQ (no buffering):
400 ev / 16 s = 25 Hz
with buffering of 1000 events:
1000 ev / 16 s ~ 70 Hz
 100k ev in 25 – 60 min

8. Beam purity Pion beam: for Ep > 10 GeV 97-99% hadrons of which:
10% proton in p+ (these numbers are E >1% antiproton in p dependent)
1% electrons
1% muons
Electron beam: for 40<Ee<120 GeV
>97% electrons
for Ee < 40 GeV
use Cherenkov to separate e/p

9. Equipment to integrate @ test beam
Trigger plates:
2x 3x3 cm2 for beam
2x 10x10 cm2 for muon from dump
2x large muon trigger (1x1 m2)
1x muon trigger after tail catcher
2 x/y drift chambers (3rd chamber optional)
10x10 cm2 area
~200 um resolution
Cherenkov counter
e/p separation up to 40 GeV
All data recorded into DAQ + beam parameters:
intensity, energy, magnets status, etc…

10. Data taking plan (period 3)
… will follow from period 2 experience
In general foreseen higher statistics & more energy points

11. Shift Rules and Schedule
3 shifts per day a 3 people need to be covered.
shift at DESY is Mandatory before the first shift at CERN
 goal: learn how to operate the DAQ and how to judge data quality
The shift week at CERN starts on Wed. and ends on Tue. the following week
Safety instructions should be attended on the Tue. prior shift starts
In order to register and get all bureaucracy done it is advisable to arrive on the Mon. prior shift starts

12. Details of the shift schedule Still to be organized:
clear task sharing for first level analysis and data quality control
“shift schedule” for analyzers in DESY and other institutes

13. Preparation for CERN test beam
Documents needed:
(If required) Visa for Switzerland and France
Medical certificate stating that You are allowed to work in radiation controlled areas.
Registered as CERN user and Computer account
 pre-filled forms will be made available to hand in before shift starts
CERN Dosimeter (requires CERN address, procedure not yet established)
CERN Safety Course (video running every day. CERN access card required)
Accommodation: critical! To be taken care in advance
 check on CERN hostel service