BE BE Ge pr Ge pr oje c t oje c t Re sults from de te c tor - PowerPoint PPT Presentation

BE BE Ge pr Ge pr oje c t oje c t Re sults from de te c tor ope ra tions Re sults from de te c tor ope ra tions a nd outlook a nd outlook a nd outlook a nd outlook MPI für Ke rnphysik • He ide lbe rg MPI für Ke rnphysik • He ide lbe rg L L NGS • Gra n Sa sso NGS • Gra n Sa sso M AX M AX AX P LANCK AX- P LANCK LANCK I NSTITUT LANCK- I NSTITUT NSTITUT NSTITUT FÜR K ERNPHYSIK FÜR ERNPHYSIK 1 1 BE 1. BE 1. BE BE Ge in L Ge in L Ge in L Ge in L Ar te st re sults Ar te st re sults Ar te st re sults Ar te st re sults 2. Co nstra ints o n fro nt 2. Co nstra ints o n fro nt- -e nd b a ndwidth e nd b a ndwidth Ma rik Ba rna b Ma rik Ba rna bé He ide r é He ide r • Duša n Budjá š • Ste fa n Sc höne rt • Duša n Budjá š • Ste fa n Sc höne rt j Upc o ming c ha ra c te risa tio n o f de p de p Ge BE 3. Upc o ming c ha ra c te risa tio n o f 3. Ge BE Ge de te c to rs Ge de te c to rs Ma tte o Ag ostini • E Ma tte o Ag ostini • E nric o Be llotti • Duša n Budjá š • Ca rla Ca tta dori • nric o Be llotti • Duša n Budjá š • Ca rla Ca tta dori • á Ale xa nde r He g a i • Ale xa nde r He g a i • Ste fa n Sc höne rt • Mic ha l T Ste fa n Sc höne rt • Mic ha l T a rka • Assunta di Va c ri a rka • Assunta di Va c ri

Duša n Budjá š Duša n Budjá š Duša n Budjá š 1 1. 1. BE BE BE BE Ge in L Ge in L Ge in L Ge in L Ar te st re sults Ar te st re sults Ar te st re sults Ar te st re sults 2. 2. Constra ints on front Constra ints on front- - e nd ba ndwidth e nd ba ndwidth 3. 3. Upc oming c ha ra c te risa tion of Upc oming c ha ra c te risa tion of de p de p Ge BE p Ge BE Ge BE Ge BE Ge de te c tors Ge de te c tors Ge de te c tors Ge de te c tors 2

Ma rik Ba rna b Ma rik Ba rna b é Ma rik Ba rna b é He ide r He ide r He ide r MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge in L Ge in L Ar: GDL Ar: GDL te st be nc h te st be nc h 60 c m • 1 st sta g e pre a mp fro m HdM (in Ar g a s in de wa r ne c k) g a s in de wa r ne c k) • wa rm 2 nd sta g e • 30 ns rise time 3

Ma rik Ba rna b é Ma rik Ba rna b Ma rik Ba rna b é He ide r He ide r He ide r MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge in L Ge in L Ar: short te rm te st 12. 2009 Ar: short te rm te st 12. 2009 • Go a ls: G l  wo rking in L Ar?  HV sc a n 1 st c o o ling : • hig h L hig h L C, so me visib le sig na ls, C, so me visib le sig na ls, b ut no spe c trum  c ure : 3 × me tha no l b a th 2 nd c o o ling : • C  50 pA L WHM  1.8 ke V F 4

Ma rik Ba rna b é Ma rik Ba rna b Ma rik Ba rna b é He ide r He ide r He ide r MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge in L Ge in L Ar: Ar: short te rm te st 12. 2009 short te rm te st 12. 2009 de ple tio n vo lta g e :  3.5 kV (1332 5 k V li (1332.5 keV line) ) de ple tio n vo lta g e : de ple tio n vo lta g e :  3.5 kV 5

Ma rik Ba rna b Ma rik Ba rna b é Ma rik Ba rna b é He ide r He ide r He ide r MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge in L Ge in L Ar: Ar: long te rm te st 2. 2010 long te rm te st 2. 2010 Fit: y = a · x + b a = (-0 5 ± 2 5)·10 -3 a ( 0.5 ± 2.5) 10 b = 5.14 ± 0.04 o pe ra ting vo lta g e : 4.5 kV 6

Ma rik Ba rna b Ma rik Ba rna b é Ma rik Ba rna b é He ide r He ide r He ide r MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge in L Ge in L Ar: ove ra ll syste m sta bility Ar: ove ra ll syste m sta bility b a c kg ro und b a c kg ro und 4 da y 60 Co 7

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge in L Ge in L Ar: pulse - Ar: pulse - sha pe disc rimina tion re sults sha pe disc rimina tion re sults 3500 3500 228 T T h h DEP DEP 3000 3000 2500 2500 DE P a c c e pta nc e fixe d a t 90% 1621 keV nts Coun 2000 2000 2000 2000 50% 1500 1500 45% 1000 40% a t 1000 m c ryo sta al fraction 35% Ar 2039 keV 500 500 st in L 2103.5 keV 30% 2614.5 keV 0 0 2614.5 keV 1570 1580 1590 1600 1610 1620 1630 1640 1570 1580 1590 1600 1610 1620 1630 1640 25% Va c c uum 21035keV 2103.5 keV Surviva 1 st te s 2039k V 2039 keV Energy [keV] 20% lo ng -te rm te st in L Ar 15% 10% 5% 0% 25.7 28.7 17.12 3.2 8.2 13.2 18.2 23.2 28.2 D ate E rro r b a rs inc lude syste ma tic unc e rta inty o f PSD c a lib ra tio n 8

Duša n Budjá š Duša n Budjá š Duša n Budjá š 1 1. 1. BE BE BE BE Ge in L Ge in L Ge in L Ge in L Ar te st re sults Ar te st re sults Ar te st re sults Ar te st re sults 2. 2. Constra ints on front Constra ints on front- - e nd ba ndwidth e nd ba ndwidth 3. 3. Upc oming c ha ra c te risa tion of Upc oming c ha ra c te risa tion of de p de p Ge BE p Ge BE Ge BE Ge BE Ge de te c tors Ge de te c tors Ge de te c tors Ge de te c tors 9

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge PSA c onstra ints on front- Ge PSA c onstra ints on front - e nd ba ndwidth e nd ba ndwidth  te st o f PSD pe rfo rma nc e in de pe nde nc e o n sig na l b a ndwidth  using re c o rde d e xpe rime nta l pulse -da ta  using re c o rde d e xpe rime nta l pulse -da ta  ste p 1: F E b a ndwidth re stric tio n simula te d b y va rio us filte r me tho ds raw FADC data (pulser signal) FADC d t ( l i l) after digital filtering ft di it l filt i 5000 5000 4000 4000 ignal 3000 3000 3000 3000 Voltage s 24 ns 40 ns – 500 ns 2000 2000 1000 1000 0 0 0 0 2400 2420 2440 2460 2480 2500 2400 2420 2440 2460 2480 2500 t [10 ns] t [10 ns] 2000 2000 nal 1500 1500 Current sig 1000 1000 500 500 0 0 2400 2420 2440 2460 2480 2500 2400 2420 2440 2460 2480 2500 t [10 ns] t [10 ns] 10

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg BE BE Ge PSA c onstra ints on F Ge PSA c onstra ints on F E E ba ndwidth ba ndwidth  ste p 2: PSD o n filte re d pulse s (DE P a c c e pta nc e a lwa ys fixe d a t 90%) 40% 68% 228 T 228 T h h FEP 1621 keV CC 1570 keV 35% 65% bability m m o ing a erage oving average obability m oving average 30% local regression 63% local regression 25% 12dB drop 60% 12dB drop 24dB drop 20% 24dB drop 24dB drop survival prob survival pro 58% 8% 15% 55% 10% 53% 5% 50% 0% 0 100 200 300 400 500 0 100 200 300 400 500 Rise time [ns] Rise tim e [ns] 7% 60 Co sum m ation region 1570 keV 6% m oving average 5% local regression local regression  po ssib ility fo r impro ve d 4% 4% 12dB drop 3% 24dB drop PSD re je c tio n with 2% o ptimise d sha ping 1% 0% 0 100 200 300 400 500 Rise tim e [ns] 11

Duša n Budjá š Duša n Budjá š Duša n Budjá š 1 1. 1. BE BE BE BE Ge in L Ge in L Ge in L Ge in L Ar te st re sults Ar te st re sults Ar te st re sults Ar te st re sults 2. 2. Constra ints on front Constra ints on front- - e nd ba ndwidth e nd ba ndwidth 3. 3. Upc oming c ha ra c te risa tion of Upc oming c ha ra c te risa tion of de p de p Ge BE p Ge BE Ge BE Ge BE Ge de te c tors Ge de te c tors Ge de te c tors Ge de te c tors 12

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg Cha ra c te risa tion of de p de p Ge BE Cha ra c te risa tion of Ge BE Ge de te c tors Ge de te c tors Co o rdina to rs: Duša n, Assunta  Pa rtic ipa nts fro m se ve ra l GE RDA institute s  Goa l : c ha ra c te rise spe c tro sc o pic , c ha rg e c o lle c tio n a nd PSD pe rfo rma nc e o f the ne w BE Ge de te c to rs  Work pla n : • hig h-vo lta g e sc a nning • e ne rg y re so lutio n me a sure me nts • de a d-la ye r a nd a c tive vo lume de te rmina tio n y • PSD pe rfo rma nc e te sts • sta b ility me a sure me nt  Pla c e : L NGS, la b o ra to ry a t Auto rime ssa 2 (a b o ve g ro und)  F irst de te c tor a rriva l : in the ne xt da ys 13

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg Cha ra c te risa tion of de p de p Ge BE Cha ra c te risa tion of Ge BE Ge de te c tors Ge de te c tors  Sc he dule : under review (permanently...) 14

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg Summa ry a nd c onc lusions Summa ry a nd c onc lusions  BE Ge de te c to r suc c e sfully o pe ra te d in L Ar: 1.8 ke V F WHM, sta b le o pe ra tio n, PSD pe rfo rma nc e sa me a s in va c . c ryo sta t  PSD re q uire me nts o n fro nt-e nd b a ndwidth no t ve ry de ma nding : ~100 ns rise time suffic ie nt  Re a dy fo r a c c e pta nc e te sting c a mpa ig n o f f i i f the ne w de p Ge BE Ge de te c to rs, c ha ra c te risa tio n o f the 1 st de te c to r sta rting t d h i i f h i a fte r the me e ting 15

Duša n Budjá š Duša n Budjá š Duša n Budjá š MPI MPI MPI K K K He ide lb e rg He ide lb e rg He ide lb e rg Backup slides Backup slides 16