CKOV1 at the MICE Experiment

transcript

•CKOV1 to perform mu/pi id w TOF0/TOF1.•Progress since CM16•CKOV1 Fabrication and Installation

TOF0 CKOV1 TOF1 EMCALTOF2

L. Cremaldi, CM17 CERN, Feb 24, 2007

2 Threshold Aerogel Counters2 Threshold Aerogel Counters

Aerogel Counter

ISIS Beam Line ISIS Beam Line

Magnetic Shielding- 2D Model

4.6% 3.4%

48% 41%

Btube = 10%BZ + 60% BBZg , B <5g

- H20 fraction is negligible.- Tested with low energy betas.- Background may be dominated by-rays, etc.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Rate Tests

Number of Photo Electrons vs Frequency

0 1000 2000 3000 4000 5000 6000 7000

Frequency (kHz)

# of PE

8in 5PE8in 10PE8in 15PE8in 20PE8in 25PE5in 5PE8inTB

Transistor base prototype

Resistive base

RCA 8854 Transistor base

Transistor Base Transistor Base

CKOV1 Electronics

•CAEN V1724 8 Channel 14 bit 100 MS/s FlashADC 250-500 ps t resolution•CAEN V1290 TDC 25 ps t resolution

20 ns.div

-Machining- UM-Nickel Plating-Ready in Spring '07 for light tests

Light Box AssemblyLight Box Assembly

-Needed June/July ‘07.-Aerogel order in Mar’07-4mo lead time?-Assembly in Mississippi-Ship to RAL in Jul ’07

Radiator Box AssemblyRadiator Box Assembly

13L. Cremaldi, CM17 CERN, Feb 24, 2007

- CKOV1 Platform Design-GG -Decision should be made if RAL or US responsiblity.

-Magnetic shields and PMT assemblies from Treste.-Mu-metal shield needs modification and re-annealing.-10 PMTs checked at Trieste before shipping to RAL. (UM)

PMT + Shield AssemblyPMT + Shield Assembly

Mirror Flashing Concept Mirror Flashing Concept

•Mirror aluminized in 2 sections.

•Large Vacuum vessel.

Mirror Fabrication

•CERN Facility - Andre Braem - meeting next week•FNAL Facility - Eileen Hahn - Lab7

Large Vacuum Chamber- Off Line.Small Chamber- On Line.

90cm id

38cm id

44cm id

60cm od

quartz fiber PMT

DAQGate

LED Pulser

LED Pulser•Non-linear Response•Sensitive to LED Vapp•Adequate for Monitoring•Calibration of 1-Photon

•LEDs mounted near PMTs•Pulser fanned out at CKOV1•Two BNC control lines.

VME/NIMPULSER

Alignment & Self Calibration - 1,2 PE most probable in PMT 1-4.- Small correlation with muon x,y.- Data 1,2 pe signals self calibrating- Some Alignment of CKOV1 by balancing PMT light yield.

CKOV1 Services - 12 45m signal cables RG-58 type. 8 CKOV1 signals 2-Pulser 2 spare Should terminate at a patch panel in the Control Room.

- 10 SHV type high voltage cables. - HV supply not specified yet, may start with something simple Lecroy 4032??

-4 Low voltage Monitor cables for humidity sensor, gas flow, etc

-Dry air supply for mirror box or silica gel packs.

- NIM Crate for Pulser and checkout.

CKOV1 ScheduleCKOV1 Schedule

Mar Apr May Jun Jul Aug Sep Oct ‘07

Light Box

Aerogel Order

Mirror

Assemble

PMT Check + Housing to RAL

PMT Bases(FNAL)

Radiator Box

Mirror Assembly

Nickle Plate

CKOV1 Stand (RAL)

Mu-metal Shield Mod(??)

Radiator Box

Hardware/Software Experience

•TOF + CKV systems installed by hardware experts. H2 Testbeam CERN

• User analysis by software experts FNAL.

•Specialization, wave of the future!

Full Scale Model of the Royal Crown

CKOV1 at the MICE Experiment

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