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Very hard radiation resistant and ultra-fast calorimetry
Radiat. Phys. Chcm. Vol. 41, No. l/2, pp. 253-261. Printed in Orcat Britain
0146~5124193
1993
VERY HARD RADIATION RESISTANT AND ULTRA-FAST C-Y PH. GORODETZKY,B. GROSDIDIER,and D. LAZIC Presented by Ph Gomletzky Ceme&ReckcksNu&ainx,CNRS-lN2P3~Uni~LouisPasteur B.P. 20, F-67037 Strasbotq Ce&x 2, France
INTRODUCI’ION
RADIATION HARDNESS
$5.00+0.00
Pcrgamon Press Ltd
OF QUARTZ
254
PH. GORODETZKY
et al.
110
100
00
z 600 [
t70 e
-
I-
w
+ +
0 tlraa 50tlRaa 500 nrmi
4.
5 Grad
0
2OGrad 0
spwArat
sensltlvlty
Of 2020/G
so c 0
200
400
ooo
(00
wavotongth (nm)
1000
Pig. l.T~yofa3mmthickSuprasilquartzdiscafterdiffeFentdosesof irradiation. The spectral sensitivity of the 202OQphotomultiplier shows the intensting factthatthis wavelenghtis mm instauitiveto radiation
PHYSICS OBJEcrlvW NA38htstolndIdaze4D&gree c¶&r&!W(zDc)for19WwhenaPbbeamwlllbeavPllrblestCERN (NA38wlllbelhenNAso). Poralead~~pokctlleandtacgumaketheuPeofaZDCIdeaIto dlffaencebetweent.bebepmenerByandthe~y ~~e=Wdeposlted~~Earget(eaersY IlWBumdinthezDc). AsW3zDcwlllsuffer~oneG4Jrpdeverytwoywra,hrstoreaoIveevenEs relKWonintheran8e3-lo%,thenwehaddle atarateof2*107per~andneedsalWIh4energy klent0usetknowsta&mi”Spagh&UcabWetqwlhitslmrWc8oodresoi@W~~the scMUat@plastlcllbembyquaafibers. LlghtwouldbeemittedbycerenhovradUon.sotbe8y@em shalldbehret Twoques&m6hadtobean5weHza)HowqurtztlbersstandradMondama8e? b)WhatistheamouatofCerenkovligMpmducedwim?nachQ?d patt&cIecmssesaBbeR TIlean8wertothetIrstquf!adonisnothnmediate.AsamntllgtheaaeisofthesamequalttyassnprasilII, MLlWlmtakespIaceattbeheat wecanauppoeethisaKewillmltalffer,~lywhennbmtedtM ofthe&owar,onIyalongafewcenUrWters. Buthowdoes~ckddi~behave?Itismadeel(haofphstic (dopedPIWA)Wbpedqumr&luldbotbtbC3e~rekno~bsoffer~ndbbloir.
Quartz fiber calorimetry
RADIATION HARDNESS OF QUAR-IZ FIBER!3
100
i
P
i 0
E
D
si-SI nom
l
HcR”oml
A
II
HCM
.E
norm
1
0
1
2
Dose
3
(Grads)
Rg. 2. cerenko~ light induced by 2 MeV electmos lo 3 different fibers. Si-Si sta& for quartZcladding. The two others have PMhU cladding. Light normalhth was Qne throu8h a mm-lrratllatexj LED lit fiber.
HOW TO BUILD A QUARTZ FIBER CAJaORIMETER
l
pNsI(IIJ-BI-RD.
dimrihtal by S.E.D.I..6 r~ ha-Mama.
Z.I. StChaauh F-91031E”‘Yoedex.
256
PH. GORODBTZKY et al.
Pmiclotm)rcp#y
-_-_______ _ _. ._..p_ 1--_____ -f!v ----___
Puikbtl@aucny
R -0.5 mm
Number of collected
Cerenkov
Photons
Fig. 3. Top) Geometricalparametersof an opticalfiber- pmicle trajectorysystem. Bottom) Number of photons pmduced by Cefenkov effect and collected at the attnrmftyda~~lmmdi~~andanumrical~of0.37)intercepedby achargedparticlc(2=1,~=1).
257
Quartz fiber calorimetry <
196cm -
Towards photomultipliers
-0
5
10
15 20 Time (ns)
YLlilEZ~ 0
5
10
lime (ns)
EzEl
15
20
Tills (ns)
:iq-Jpgq 0
5
10
;!;d
15 20 Time (ns)
Zm 0
5
0
10
5
10
15 20 Time (ns)
15 20 Time (ns)
Fig. 4. Top) Schematic view of the 7 slices. Bottom) The amde pulsea of the 6 first photomultlpliers for an Oxygen ion (160 GeV/n). Each pulse is shi!kedby PIE ns due to the shower devehpement velocity. The total pulse is the sum of the 6 pukes, each of themdelayedbymN1relativetothenextone.Itistheusefulpllsefor~experiment
+dllsmodslwsseaablisbedbyH.cnwford8ndP.Gamdetzlty in1990.
PH. GORODETZKY et al.
(12% 20000-
,129 . -.a*
OO
b
,2oB
l12”C I 40
.
.
.
,
, 80
,
,
,
,
I
120
160
.
,
frqmsnt
.
*
, tlxl
.
. -I
mm*
pig. 5. Lkarity of the ZDC. Neareach pint is indicatedthe numberof &m&ted events.Theenorbatlscorrespoadto~FwHMeaergyresolutionasdeduoedfrom aleastsquams%t,Scethctextlixmoredetails.
TmExPERIImNTALPRoToTYPEs Pmmypen’l
PM1 oanw
260
PH. GORODETZKY et al.
800
ii z
2
K L
600
E 400
200
CHANNEL NUMBER
500
1 Photomutiplier per block
400
300
200
100
0 CHANNEL NUMBER Fig. 8. ADC speUmm of 200 GeV/n sulfurions in prototypen’2. The lesolutionis cvJ3=9%. In thisco~tion (1 tomultiplier r block, thatis a lead to cptz volumeratioof 4 F , thenumbero8” photo &ctrm~ is 0.2 per Gev.
Quartz fiber calorimetry Inthlsmmdx,oneMeroutof4wasmadbyonephotomnlbiplier. ledassto4mpam tbeappwentleadtocluprbnmowaa40, TImtwxy~rediogonecrtwoorthleeorfaEr~ 30.20010mqecdvely. Tosavemoney,weusedM&aMeM PMMApladklll?esstolraamlttbeligM fmmtbeCpmtzflbt?s8toule ~wbkhwereinexpendvePt1iUp8XP2262withaU.V. ligI&w&JwoIul imemwvespboboathade. llx?purposewa6toche&lfthe&wbaL.k 0fomwngu.v. tilemoneyswed. Fig.8.EhowslIle!ADcspechpobceinedwnhIhe4blocksauglled(fullalashneg pwomuloiplier per block. We hove here 0.2 phM&&wm pe!XGev. ‘Ibe mw)wwlo= ~l~(alE=9%)isideblclll~thenumbadpboQomultiplkrsperModrrep4chptkwMever tbeleadtocpprtr.volumermio. ‘Zbls8gfeesvdthnslmwerloaaoflO%aDdanlmimk~mmcb Irplw#lecondWIdK(atthebaselh be4tertlmnlO%.nIeauodepulnesol%sm&Inthis~wereolle lew?l)tlmnfortheptctypen’l. ~isnegligiblepndIsdoeto~~~ywmreEi&~of~ photomultipuers.
CONCLUSION - FWTURE
261
0146~5124193
1993
VERY HARD RADIATION RESISTANT AND ULTRA-FAST C-Y PH. GORODETZKY,B. GROSDIDIER,and D. LAZIC Presented by Ph Gomletzky Ceme&ReckcksNu&ainx,CNRS-lN2P3~Uni~LouisPasteur B.P. 20, F-67037 Strasbotq Ce&x 2, France
INTRODUCI’ION
RADIATION HARDNESS
$5.00+0.00
Pcrgamon Press Ltd
OF QUARTZ
254
PH. GORODETZKY
et al.
110
100
00
z 600 [
t70 e
-
I-
w
+ +
0 tlraa 50tlRaa 500 nrmi
4.
5 Grad
0
2OGrad 0
spwArat
sensltlvlty
Of 2020/G
so c 0
200
400
ooo
(00
wavotongth (nm)
1000
Pig. l.T~yofa3mmthickSuprasilquartzdiscafterdiffeFentdosesof irradiation. The spectral sensitivity of the 202OQphotomultiplier shows the intensting factthatthis wavelenghtis mm instauitiveto radiation
PHYSICS OBJEcrlvW NA38htstolndIdaze4D&gree c¶&r&!W(zDc)for19WwhenaPbbeamwlllbeavPllrblestCERN (NA38wlllbelhenNAso). Poralead~~pokctlleandtacgumaketheuPeofaZDCIdeaIto dlffaencebetweent.bebepmenerByandthe~y ~~e=Wdeposlted~~Earget(eaersY IlWBumdinthezDc). AsW3zDcwlllsuffer~oneG4Jrpdeverytwoywra,hrstoreaoIveevenEs relKWonintheran8e3-lo%,thenwehaddle atarateof2*107per~andneedsalWIh4energy klent0usetknowsta&mi”Spagh&UcabWetqwlhitslmrWc8oodresoi@W~~the scMUat@plastlcllbembyquaafibers. LlghtwouldbeemittedbycerenhovradUon.sotbe8y@em shalldbehret Twoques&m6hadtobean5weHza)HowqurtztlbersstandradMondama8e? b)WhatistheamouatofCerenkovligMpmducedwim?nachQ?d patt&cIecmssesaBbeR TIlean8wertothetIrstquf!adonisnothnmediate.AsamntllgtheaaeisofthesamequalttyassnprasilII, MLlWlmtakespIaceattbeheat wecanauppoeethisaKewillmltalffer,~lywhennbmtedtM ofthe&owar,onIyalongafewcenUrWters. Buthowdoes~ckddi~behave?Itismadeel(haofphstic (dopedPIWA)Wbpedqumr&luldbotbtbC3e~rekno~bsoffer~ndbbloir.
Quartz fiber calorimetry
RADIATION HARDNESS OF QUAR-IZ FIBER!3
100
i
P
i 0
E
D
si-SI nom
l
HcR”oml
A
II
HCM
.E
norm
1
0
1
2
Dose
3
(Grads)
Rg. 2. cerenko~ light induced by 2 MeV electmos lo 3 different fibers. Si-Si sta& for quartZcladding. The two others have PMhU cladding. Light normalhth was Qne throu8h a mm-lrratllatexj LED lit fiber.
HOW TO BUILD A QUARTZ FIBER CAJaORIMETER
l
pNsI(IIJ-BI-RD.
dimrihtal by S.E.D.I..6 r~ ha-Mama.
Z.I. StChaauh F-91031E”‘Yoedex.
256
PH. GORODBTZKY et al.
Pmiclotm)rcp#y
-_-_______ _ _. ._..p_ 1--_____ -f!v ----___
Puikbtl@aucny
R -0.5 mm
Number of collected
Cerenkov
Photons
Fig. 3. Top) Geometricalparametersof an opticalfiber- pmicle trajectorysystem. Bottom) Number of photons pmduced by Cefenkov effect and collected at the attnrmftyda~~lmmdi~~andanumrical~of0.37)intercepedby achargedparticlc(2=1,~=1).
257
Quartz fiber calorimetry <
196cm -
Towards photomultipliers
-0
5
10
15 20 Time (ns)
YLlilEZ~ 0
5
10
lime (ns)
EzEl
15
20
Tills (ns)
:iq-Jpgq 0
5
10
;!;d
15 20 Time (ns)
Zm 0
5
0
10
5
10
15 20 Time (ns)
15 20 Time (ns)
Fig. 4. Top) Schematic view of the 7 slices. Bottom) The amde pulsea of the 6 first photomultlpliers for an Oxygen ion (160 GeV/n). Each pulse is shi!kedby PIE ns due to the shower devehpement velocity. The total pulse is the sum of the 6 pukes, each of themdelayedbymN1relativetothenextone.Itistheusefulpllsefor~experiment
+dllsmodslwsseaablisbedbyH.cnwford8ndP.Gamdetzlty in1990.
PH. GORODETZKY et al.
(12% 20000-
,129 . -.a*
OO
b
,2oB
l12”C I 40
.
.
.
,
, 80
,
,
,
,
I
120
160
.
,
frqmsnt
.
*
, tlxl
.
. -I
mm*
pig. 5. Lkarity of the ZDC. Neareach pint is indicatedthe numberof &m&ted events.Theenorbatlscorrespoadto~FwHMeaergyresolutionasdeduoedfrom aleastsquams%t,Scethctextlixmoredetails.
TmExPERIImNTALPRoToTYPEs Pmmypen’l
PM1 oanw
260
PH. GORODETZKY et al.
800
ii z
2
K L
600
E 400
200
CHANNEL NUMBER
500
1 Photomutiplier per block
400
300
200
100
0 CHANNEL NUMBER Fig. 8. ADC speUmm of 200 GeV/n sulfurions in prototypen’2. The lesolutionis cvJ3=9%. In thisco~tion (1 tomultiplier r block, thatis a lead to cptz volumeratioof 4 F , thenumbero8” photo &ctrm~ is 0.2 per Gev.
Quartz fiber calorimetry Inthlsmmdx,oneMeroutof4wasmadbyonephotomnlbiplier. ledassto4mpam tbeappwentleadtocluprbnmowaa40, TImtwxy~rediogonecrtwoorthleeorfaEr~ 30.20010mqecdvely. Tosavemoney,weusedM&aMeM PMMApladklll?esstolraamlttbeligM fmmtbeCpmtzflbt?s8toule ~wbkhwereinexpendvePt1iUp8XP2262withaU.V. ligI&w&JwoIul imemwvespboboathade. llx?purposewa6toche&lfthe&wbaL.k 0fomwngu.v. tilemoneyswed. Fig.8.EhowslIle!ADcspechpobceinedwnhIhe4blocksauglled(fullalashneg pwomuloiplier per block. We hove here 0.2 phM&&wm pe!XGev. ‘Ibe mw)wwlo= ~l~(alE=9%)isideblclll~thenumbadpboQomultiplkrsperModrrep4chptkwMever tbeleadtocpprtr.volumermio. ‘Zbls8gfeesvdthnslmwerloaaoflO%aDdanlmimk~mmcb Irplw#lecondWIdK(atthebaselh be4tertlmnlO%.nIeauodepulnesol%sm&Inthis~wereolle lew?l)tlmnfortheptctypen’l. ~isnegligiblepndIsdoeto~~~ywmreEi&~of~ photomultipuers.
CONCLUSION - FWTURE
261