Upload
jeremy-jones
View
215
Download
0
Embed Size (px)
Citation preview
February, 12 2006 INP PAN
FCAL Workshop in Cracow
W. Lohmann, DESY
The BCD (Baseline Configuration Document)
The next calendar dates
Where we are with FCAL
February, 12 2006 INP PAN
The BCD
Executive Committee for Baseline ConfigurationGDE Director
Barish
Regional Directors Dugan – Americas
Foster – EuropeTakasaki – Asia
Accelerator LeadersYokoya - Asia
Raubenheimer - AmericasWalker - Europe
Responsible for decisions and documentation for the Baseline Configuration Document
(BCD)
GDEExecutiveCommittee
February, 12 2006 INP PAN
ILC Parameters
February, 12 2006 INP PAN
The BCD
The Baseline Machine (500GeV)
The 1 TeV upgrade
February, 12 2006 INP PAN
2 Interaction Regions
Two Detectors, because:
•Confirmation and redundancy•Complementary Collider options•Competition•Efficiency, reliability•Historical lessons
We have to contimue with two design options!2 mrad and 20 mrad
February, 12 2006 INP PAN
GDE groupsMachine design, Cost …..
Siting, civil construction …….
Physics, Detectors
- J. Brau (America) - F. Richard (Europe)- H. Yamamoto (Asia)
……….
Area subsystem leads
A. Seryi, H. Yamamoto (MDI panel) D. Angal-Kalinin
Beam delivery system
February, 12 2006 INP PAN
The next calendar dates
EUDET kick-off meeting in Hamburg, February 15-17.
LCWS Bangalore, March 9-13.
Physics Research Committee, May 11-12
ECFA WS, Valencia, November, 2006
We have to present our plan for the next 4 years
LDC outline document, presentations
A written report and a presentation are expected
prepare ourselfs, FCAL meeting before?
February, 12 2006 INP PAN
Where are we with FCAL
-We worked out an advanced design for zero or small crossing
angle;-this was accepted and acknowledged in Snowmass and
Vienna(Several talks by H. Abramowicz, K. Afanaciev,C.Grah,V.Drugakov, A.Elagin, B. Pawlik, A. Sapronov)-the performance (resolutions, efficiencies, biasas) are
understood from simulations for partly realistic detectors
-the backscattered background ( into the central detector part) is estimated
- Some studies are done for the 20 mrad version (beamstrahlung background, systematics of beamposition)
February, 12 2006 INP PAN
•Fast Beam Diagnostics
•Detection of Electrons and Photons at very low angle –
extend hermeticity
IP
VTX
•Measurement of the Luminosity
with precision (<10-3) using Bhabha scattering
BeamCal
FTD
L* = 4m
300 cm
LumiCal: 26 < < 82 mradBeamCal: 4 < < 28 mradPhotoCal: 100 < < 400 rad
Very Forward DetectorsBeamstrahlung
Depositions:20 MGy/yearRad. hard sensorse.g. Diamond/W BeamCal
LumiCal
Silicon/W sandwich
R&D for ILC (DESY PRC R&D 02/01):Instrumentation of the Very Forward Region of the ILC Detector
BeamCal
February, 12 2006 INP PAN
A few topics to be thought
Selection of Bhabha events:
Energy selection cut
At which energy this cut has to be put?-Theoretical uncertainty -Energy scale uncertainty
February, 12 2006 INP PAN
A few topics to be thought
The Bhabha cross section depends on the polarisation
How well is this understood?-higher order corrections - considered in the Monte Carlo
February, 12 2006 INP PAN
A few topics to be thought
Electron detection efficiency:
Algorithm relies on constant bunch charge
Look on Dumping Rings
How stable is this mechanism?-Bunch-to-bunch fluctuations (Contact to machine people )
February, 12 2006 INP PAN
20 mrad design
Changes within LDC:
-TPC is shorter-HCAL should cover smaller angles-LumiCal aligned with or in front of ECAL -Montage-friendly
-Background on LumiCal ?- Background in the inner Detector?
February, 12 2006 INP PAN
What has to be done:
We need a design for 20 mrad crossing angle-new geometry-repetition of many simulations-studies of backgrounds, beamstrahlung, backscattered into the central detector We have to understand Bhabha phenomenology in more details-Status of the theory and generators- How influence radiative effects for a given detector the uncertainty of the measurement- Optimised segmentation/structure for LumiCal- Realistic readout scheme
February, 12 2006 INP PAN
What has to be done:
Sensor and Readout
-Continuation of diamond studies (more samples with promising diagnostics, linearity, homogeneity, high radiation doses.)-Si sensor studies (to learn to work with them).-Si sensor radiation test.-Assembly of full sensor planes prototype test.-Readout electronics design for the prototype O(1000) channels.-Concept for the readout electronics-Concept Design for the ‘fast readout’ and fast diagnostics (related to Eurotev).
February, 12 2006 INP PAN
This meeting at INP
-Reports on many topics mentioned
-Discussions on ‘critical’ Issues 20 mrad design more realistic simulations prototyps and testbeam electronics concept preparation of the EUDET kick-offmeeting Lets make a WORKshop and see at theend where we’ll go