Cooling for 2DSSD established after some struggle.
2DSSD fully read out with cooling HV= +40 V -40 V I = 1.84 uA
Beam position: Origami ce: p-side: APV #10 (= pos 4) n-side: APV #19 (= pos 3)
Positions of thermal sensors:
11 Kapillare Anfang
12 Kapillare Ende
13 ---
14 unmittelbar nach Kapillare
15 Origami in
16 Origami out
17 Origami -z
18 Origami CE
Strip order:
n-Seite: rechts (Salev) nach links (Jura)
p-Seite: oben nach unten
APV chips with lower noise:
-z ce p-side #5 #10 (= pos 4) n-side #13 (= pos1) #19 (= pos 3)
2DSSD fully read out with cooling HV= +40 V -40 V I = 2.1 uA Beam position: Origami -z p-side: APV #5 n-side: APV #13 (= pos.1 of -z)
2DSSD fully read out with cooling HV= +40 V -40 V I = 2 uA Beam position: none
HPK baby stack after irradiation - no cooling I = 420A and growing (warming up) positioned centered on p and n
Turned off cooling, now taking warm data
HPK baby stack after irradiation - no cooling I = 200A and growing (warming up) positioned centered on p and n
HPK baby stack after irradiation with partial cooling (HPK neutron & HPK neutron/gamma) HV = +75 V -75V I = 176A positioned centered on p and n
Temp sensors configuration:
11 HPK Neutron n in
12 HPK Neutron n -> p
13 ----
14 HPK Neutron p -> Gamma p
15 Gamma p -> n
16 Neutron Gamma n out
Perfect cooling curve :-)
HPK baby stack after irradiation with partial cooling (HPK neutron & HPK neutron/gamma) HV = +75 Vm -75V I = 226A
Infineon stack Version 2 after irradiation HV = +300 V I = 162 A
hitting upper part of strixels and baby, vertically ~centered
Infineon stack Version 2 after irradiation HV = +300 V I = 137 A
Micron Baby stack 2 after irradiation (intermediate strips) HV = -100 V I = 36 uA
DESY table shifted by 2.5mm (beam down) after beam profile was changed (to get higher intensity)
beam hitting higher APVs
Stopped when long beam off period was announced
Micron Baby stack 2 after irradiation (intermediate strips) HV = -100 V I = 39 uA
beam hitting lower APVs
Micron Baby stack 2 after irradiation (intermediate strips) HV = -100 V I = 36.3 uA
Position APV0 of all sensors
X-Y Table coordinates: X=0 / Y=-1 (afterwards: nulled)
PC power cut after ~100k events
Micron Baby stack 2 after irradiation (intermediate strips) HV = -100 V I = 33 uA
Belle stack 2 after gamma irradiation
HV = +50V -50V
I = 101 uA
CO2 cooling
hitting APV2 (n side) = center of wedge sensor
Temperatur sensors:
Bias currents absolutely stable during the whole run.
hitting APV3 (n side) = wide side of wedge sensor
Belle stack 2 after gamma irrdiation HV = +50V -50 V I = 102 uA CO2 cooling
Belle stack 2 after irradiation
I = 112 µA
After irradiation
xy-table: x=319.4, y=87.6 beam hits APV1
Micron baby stack after gamma irrdiation HV = -100 V I = -58 uA
xy-table: x=319.4, y=74.6 beam hits APV0