Tile-HCAL Main 2.7.03

V. Korbel, DESY 1

Agenda for Tile-HCAL main meeting, 2.7.03, 8:30-17:00

•Introduction VK•Status of TFS R&D

•ITEP/MEPhI M. Danilov•LPI A. Terkulov•DESY A. Terkulov, S. Reiche

•Status of:--Photodetectors

•MA-PMs S. Reiche•SiPMs E. Popova•APDs J. Cvach

--Preamps I. Polak, VK, ...--Other topics V.K., .....

--HV/LV power supplies and voltage distribution--minical installations --LED monitoring, calibration

•The minical DAQ, overview Erika Garrutti•First results from minical multi-cell studies with LED, cosmics N.N.•The DESY electron test beam, resume from yesterdays meeting V.K.•The program of the minical tests V.K.•contribution of external institutes to analysis of test data ...., discussion

Continued >>>

Tile-HCAL Main 2.7.03

V. Korbel, DESY 2

Agenda for Tile-HCAL main meeting, II•Program of the Japan ECAL tests at DESY V.K.•Status of scint. Calo studies at NIU Vishnu Zutshi•Future: speakers, volunteers...?

--Simulation•plans for simulation studies R. Poeschl•programs available for simulation studies V. Morgunov

--The status of PPT h/w V.K., all•the stack structure, granularity studies, design •active equipped detector volume •which scintillator tiles to use •which quantities of photodetectors to use •materials to order!!!! Discussion,....•tail catcher N.N

--VFE RO board, status of Dubna studies Igor Tiapkin--the DAQ h/w for the PPT beam tests Paul Dauncey--concepts of DAQ s/w for beam test ....--global detector network ? ....

• Conclusions, next main meeting, V.K.proposed: 14.8.03, DESY??

Tile-HCAL Main 2.7.03

V. Korbel, DESY 3

DHCAL meeting at the 30.6.03Talks of:•Jae Yu, Univ. of Texas at Arlington, GEM chambers for Digical, 3M, 40 000$/m2

•Vishnu Zutshi, scint. Digical >> today•V. Ammosov, status of RPC, FE•I. Tiapkin, Digital FE electronics•J. Repond, FE for RPC type PPT, 6250 ASIC’s (64 channels each) , FNAL•VK, PPT stack structure, >> see today's meeting•V. Gapienko, simulation studies, digital gas/scint. vs analogue HCAL•J. Repond, simulation studies from L.Xia, (Argonne), radial shower shapes in gas and scint.

>> all talks will be in the web these days... Next meeting of DHCAL end Oct. 03, day later Tile-HCAL main ?

Some remarks:•mean shower radius is larger in scint. than in gas Digical•this comparisons are irrelevant for the analogue Tile-HCAL

where we measure energy instead of pad patterns•400 000 channels needed for 1x1 cm2 cell Digical (~200 000 Euro)•agreement found to use common PPT stack structure with fixed gap width•2 identical (?) stacks needed ( 6 t each) for 2 different test-beams•nobody thinks so far on FE for semi-digital RO, 2-3 bit/channel?

Tile-HCAL Main 2.7.03

V. Korbel, DESY 4

What has been achieved so far ?

•TFS in production at DESY and ITEP:•117 TFS with SiPM’s in ITEP/MEPHI, scint from Vladimir•126/126 TFS from BC-408/SC-306(Protvino)•diagonal curved grooves, machined at DESY•60 cm WLS-fibres are ready and polished•BC-408 ready, TFS production is under way•Protvino tiles machined in 2 weeks?•first TFS studies in minical with BC-408 and 3MA-PMs now•36 pixels with 3/4 fibres to pixel in this month•minical modification in 1-2 weeks,

•support bars for tilt to beam and crane handling•increase gap width by 0.6mm (to confirm by measurements)

•minical electronic window ready, carries 3 MA-PMs and 36 pre-amps•DAQ software is set up, needs data for improvements and optimisation•Have plans/concept to put actual data on web for distributed analysis

Tile-HCAL Main 2.7.03

V. Korbel, DESY 5

What next?

•14+(6) APD’s arrived at DESY, 20 more to be handed over in Prague•APD test at CERN/CMS, 4.-5-7-03, 20 APD’s only•other 20 to test in 2 weeks in Prague or CERN?•25 pre-amp-chips from LAL arrive the 26.6.03 ???•Pre-amp cards designed and ordered in Prague•pre-amp cards (3 with 18 channels each) available end July•need to order soon more super-reflector, new type?

Tile-HCAL Main 2.7.03

V. Korbel, DESY 6

APD-test at CERN

With use of CMS test lab. and standard CMS preamps:•gain vs bias voltage•can we achieve a gain of 200 (500) ??•capacity vs bias voltage (in 25 pF range?)•dark current vs bias voltage•excess noise???

>> need quick answer whether we accept these APD‘s

Tile-HCAL Main 2.7.03

V. Korbel, DESY 7

Design of pre-amps for APD‘s

18 channel pre-amp cards3 cards needed + 1 spare

•2 mask for 9 APD‘s each, 5 mm sockets•APD photo-cathode is 3x3 mm2

•4 holes in mask for mixing of 4 TFS-fibres•+ 1 hole for LED-fibre•5 masks to produce...•18 potentiometers to adjust bias voltage•coupling capacitors to pre-amps (10 nF, 500V)•socket for 18 channel special LAL-pre-amp•line drivers to feed 30m LEMO cables to ADC’s

Tile-HCAL Main 2.7.03

V. Korbel, DESY 8

DESY test-beam, „Strahl 21“

•energy 0.5 to 7 GeV, 1KHz (3 GeV) to ~1Hz (~ 7GeV)•need vacuum beam line in test area to get proper >5 GeV ??•rates sufficient to get >10000 event samples•spill structure: 1 MHz, 80 msec periods, •repetition rate: 12.5 Hz•beam availability in 2003/2004/2005•test in magnetic field? Which field strength? 2 solenoids, 1.0T

free diameter ~70cm•test in H1-compensator, 4T, free diameter?•all information on beams, energy resolution, rates, operation,.... >>> folder of collected documents, copy in counting room•groups interested:

•KEK/Tokio (Sept. 2003)•CALICE ECAL (later this year?)•Univ. of Texas, digital scint. (2004?)•Most groups of RPC or GEM digital HCAL

Tile-HCAL Main 2.7.03

V. Korbel, DESY 9

can we use drilled center hole?

Tile-HCAL Main 2.7.03

V. Korbel, DESY 10

Manpower for minical test at DESY28.6.05, VK Mai June todayJuly August September

week: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Andreev, V _ h1 h1 h1 h1 h1 _ _ _ h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 KEKKEK

Elissejev, Sachaafter September ??Epifantsev, A. X X X X X X X X X X X X X X X X X XFalley, G. h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 _ _ _ h1 h1 h1 h1 h1 h1 h1 h1Garutti, A. X X X X X X X X X X X X X X X X X X X X X X X X XKorbel, V X X X X X X _ X X X X X X X _ _ _ X X X X X X X XRaspereza, A. X X X X X X X X X X X XReiche, S. x x x x x x x x x x x x x x x x x x x x x x x x xSmirnov, P. h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1Soloviev, Youri ???? h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1 h1Gilitski, Y. ????Popov, Vladimir X X X X X X X X X X X X X X X X X XBuzhan, P. X X X X X X X XDolgoshein, B. X _ X X X X X X X X X XKantzerov, V. x x x x

Karakash, A. x x x x X X X X X X XKlemin, S. X X X X X XKomissarov, P. X X X X x x x x x x x x x

Moscalev, Dmitry X X X XPopova, E. x _ X X X X X X X X X X X X XSomov, Sergey X X X X X X X X X X XBagoulia, E. x x x x x x

Devitsin, E. X X X X X X X X X XKozlov, V. ? ? ? ? ?Terkulov, A. X X X X X X X X x x x x x x

Popov, Ljubomir X X X

Tile-HCAL Main 2.7.03

V. Korbel, DESY 11

The minical programupdated, 23.6.05, VK July>>> August>>> September>>>Multi-Anode PM's week: 25 26 27 28 29 30 31 32 33 34 35 36 37ADC-function, linearity, ped., dyn. Range x xwindow MA-PMs, with 2 PMs xwindow MA-PMs, with 2+1=3 PMs x xset up of minical, MA-PMs x x xLED, cosmics, ped x x xtest DAQ, running version x x xproduce and test 126 WLS-fibres x xassemble 14 cassettes for Bicron tiles x xbuild tilting frame x xmount tilting frame, insert BC-408 cassettes x xbeam test with BC-408 >>> x x#############tests with clear fibre coupling x xtest with small tiles, Si-PM RO x xchange BC-408 tiles to Protvino tiles x xbeam test with Protvino tiles >>> x#############Si-PMs:make signal/power cables for Si-PMs, mostly done x x xmake/test window Si-PMs x xHV/LV tests/preparations for Si-PM operation x x xtest all 14 casettes with Si-PMs x xinsert Si-PM casettes in minical x xbeam test with Si-PMs >>> x x

Tile-HCAL Main 2.7.03

V. Korbel, DESY 12

The minical program

APD's:APD's arrive (Prague and DESY, we have than 40 APD's) xbuild masks for APD's (Prague) x xsome tests of APD's with LAL-test card (in Prague) x xacceptance tests of all 40 APD's at CERN possible (3.-4.7.) xbeam test with APD's and Prague voltage preamps>>> x#############LAL-preamps arrive at DESY >>> Prague xtest preamps, need 3 chips (from 25) operational for minical x xcircuit design for the APD operation in minical (LAL mod. Preamp) x xprinted FE circuit for APD (APD-FE-PC) design (in Prague) xAPD-FE-PC production in Prague x xmounting of components on APD-FE-PC, tests x x xmounting of APD's to masks on APD-FE-PC x xfinish/close window, connect 36 APD's with 126 fibres x xbeam test with 36 APD's and APD-FE-FE-PC's x xtime left for tests of unforeseen modifications x x x x

updated, 23.6.05, VK July>>> August>>> September>>>Multi-Anode PM's week: 25 26 27 28 29 30 31 32 33 34 35 36 37 38

Tile-HCAL Main 2.7.03

V. Korbel, DESY 13

KEK, the minical programpurpose of the beam test at DESY in 2003

•Tohru Takeshita of Shinshu University•Yoshiaki Fujii, KEK

(1) co-working with people who are interested in plastic tile calorimeter.

(2) to test the performance of the direct attached APD shower-max detector by electron beams. Especially the position resolution.

(3) to test the fine segmented pre-shower detector whose read out is via optical fibers by electron beams. Especially the position resolution.

(4) to train young students having experienced at DESY.

(5) we need your detector to measure the energy behind ours.

(6) would like to use the Tile-HCAL DAQ

Tile-HCAL Main 2.7.03

V. Korbel, DESY 14

KEK, the minical program

Pre-shower, A and B:• 2x20 strips, 20x1x1cm3,RO with MA-PMs • 2x20 strips, 20x1x1cm3,RO with 5x5mm2 HPK 8664-55 APD•fibre grooves in centre of strips•3M radiant mirror film

Tile-HCAL Main 2.7.03

V. Korbel, DESY 15

Studies for a CALICE HCAL

ECAL

HCAL

1.8 coilTail catcher

Tile-HCAL Main 2.7.03

V. Korbel, DESY 16

Studies for a CALICE HCAL, some details

Single absorber plate handling

Adjustment bolts with distance disks

Support frame

Tile-HCAL Main 2.7.03

V. Korbel, DESY 17

The active layer

Questions for PPT:•real overall gap width: 9.0 +/-0.5mm?•thickness of insertion frame: 8.5cm?•5.0+1.0+0.5 + 2x1.0mm steel for frame +18mm abs?•stiffness requirements?•material of insertion frame, steel?•less Fe in absorber, more in cassettes? e.g. 2x2.0mm steel walls and 16mm abs?•size of individual frames, ~1 m2 ?

29 layers minical

3x3 tiles, 5x5cm2 eachthickness:

•5mm tile,•1mm fibre, •0.5mm tolerances•3mm aluminium

Cassette for minical

Tile-HCAL Main 2.7.03

V. Korbel, DESY 18

Energy weighting optimisation;Simulation study to set to limits to reach:----split each calo tile in 2 tile-buffers, one for hadronic energy fraction, other for elm. fraction1. Reconstruct energy without weighting, just sum all tiles

2. ...... With weighting of elm. fraction, optimise weighting to get best energy resolution ( ) of event sample

3. Add elm. and hadr. energy of cells (2 tiles behind each other) try to find cells with dominant elm. contribution, try amplitude dependent weighting, opt. of sample

4. Compare with 2., optimise identification of “cells to weight” (containing sizeable fraction of elm. energy)

5. Vary cell granularity (1-4 tiles) find optimum of sample

6. Vary tile sizes, start again at 3.

Tile-HCAL Main 2.7.03

V. Korbel, DESY 19

cell- instrumented: layers/ tilesize layerslayer (cmxcm): cell (cm2) tiles: APD's APD's Si-PM's APD's Si-PM's APD's Si-PM's

1 60 60 3 5x5 432 144 432 432 4322 60 60 3 5x5 432 144 432 432 4323 60 60 3 5x5 9 432 144 432 432 4324 80 80 4 8x8 400 100 400 400 1005 80 80 4 8x8 400 100 400 400 1006 80 80 4 8x8 21 400 100 400 100 1007 100 100 5 10x10 500 100 100 100 1008 100 100 5 10x10 31 500 100 100 100 1009 100 100 7 20x20 38 175 25 25 25 25

total 38 3671 957 225 2496 325 2096 525 1296

Tile-HCAL, Prototype channels, inner core:

Tile-HCAL Main 2.7.03

V. Korbel, DESY 20

Studies for a CALICE HCAL

PPT: •inner and outer active volume?•tile granularity inside?•cell granularity inside ?•coarse tile/cell granularity outside ~ 20*20*x cm3 ?

Tile-HCAL Main 2.7.03

V. Korbel, DESY 21

Studies for a CALICE PPT-HCAL

Questions to discuss/fixe:•material of absorber plates:

•steel•stainless steel•flatness requirements, costs

•gap width•gap tolerances•gaps adjustable?•cassettes, material, sizes?•cassette thickness vs absorber plate thickness•final construction of stack module•1 or 2 modules for different test beams?•Who builds stacks?•test in magnetic field? Which field strength?

Probably mini-minical in e-beam

Weight of 38 abs. plates is 6 t !

Tile-HCAL Main 2.7.03

V. Korbel, DESY 22

Outlook

Final Tile-HCAL concept August 2003 ?Final Tile-HCAL concept August 2003 ?

Here we areVII, 2003

Here we areVII, 2003

HCAL prototype to be built for I, 2004HCAL prototype to be built for I, 2004

Minical

Prelim. design

Hard work to do soon:•simulation/reconstruction studies•HCAL stack prototype design/construction•specification of TC needed, # of layers,cells•decide on # of photodetectors:

APD’s,Si-PM’s ...