Sommaire
aucun titreINFO
| Name / nom | GeCo3_bis |
| Absorber / absorbeur | Ge wafer Umicore - diameter 44 mm - h 175 µm Electronic grade - growing axis 100 SiO coating 70 nm Luke grids: 3.8 mm pitch annular |
| Thermistor | NTD 34 B wrapped around Araldite glue - without spacers - 30 g pressing force + NbSi on Ge wafer (h=50 nm, length=14.8 mm, width=18µm) x=13.3% - R=3.79 kohm @300 K Tc=42 mK glued with araldite rapide (load of 35 g) |
| Bonding | NTD: Au wire - 25 µm Electrodes: between electrodes - Al wire - 25 µm to the thermal bath - Au wire - 25 µm + NbSi: Al wire - 25 µm P=200 mW (wafer) - 250 mW (kapton) T=50 ms - F=35 g |
| Supports/ supports | teflon supports |
| Holder | Cu |
| Notes | no Kapton pads polishing of surface: optical and chemical AND etching of surface with CP4 V max on grids = 80 V |
PHOTO
1 - CRYOFREE cryostat - RUN16 - dic 2015
semi vintage electronic
55Fe source opposite to NTD
LED optical fiber OSRAM LD 271
first from the bottom
I bias = 50 nA
| V grids = V | |
| Sensibility [µV/keV] | - |
| Sigma 55Fe [keV] | - |
| Sigma baseline [eV] | - |
2 - CRYOFREE cryostat - RUN17 - dic 2015
semi vintage electronic
55Fe source NTD side
LED optical fiber OSRAM LD 271
17/12/2015 18h25
M2 I bias = 4.166 nA
TES grounded
ELED = (170.68+-0.07) keV
fs=10kHz - gain=1072 - DR+-5V - bessel=675Hz - LED 50mHz 470.8mV 100µs
| V grids = 10 V | |
| Sensibility [µV/keV] | 3.45 |
| Sigma 55Fe [keV] | 1.9 +- 0.2 |
| Sigma baseline [eV] | 27 |
16/12/2015 00h29
M1 I bias NTD = 5 nA
I bias TES = 415 pA
ELED = 314 keV
fs=10kHz - gain=1072 - DR+-5V - bessel=675Hz - LED 50mHz 510mV 20µs
15/12/2015 16h40
M3 I bias NTD = 1.25 nA
I bias TES = 415 pA
ELED = 301 keV
fs=10kHz - gain=1072 - DR+-5V - bessel=675Hz - LED 50mHz 510mV 20µs
| M1 | M1 | M3 | M3 | |
| NTD V grids = 0 V | TES | NTD V grids = 0 V | TES | |
| Sensibility [nV/keV] | 386 | 199 | 267 | 82 |
| Sigma 55Fe [keV] | 0.598 +-0.016 | - | 0.684 +- 0.056 | 2.2 +- 0.1 |
| Sigma baseline [eV] | 257 | 1827 | 462 | 1300 |
decay time of TES pulses related to I bias
3 - Ulisse cryostat - semi-vintage electronic - 15/3/2016
55Fe
LED: optic fiber 820 nm
the detector is at 22 mK
TES GND
M1: I bias =2.5 nA - Rntd=692 kohm
M12: I bias =5 nA - Rntd=508 kohm
M10: I bias =12.5 nA - Rntd=199 kohm
M14: I bias =6.25 nA - Rntd=397 kohm
| M1 | M12 | M10 | M14 | |
| Vgrids=0V | Vgrids=0V | Vgrids=0V | Vgrids=0V | |
| sensitivity [nV/keV] | 573 | 609 | 358 | 535 |
| sigma 55Fe [eV] | 491 | 352 | 382 | 464 |
| sigma baseline [eV] | 294 | 230 | 242 | 282 |
- Was this page helpful?
- Mots clés (Modifier les mots clés)
- Liens sur cette page
Fichiers 13
.jpg)
| Images 11 | ||
|---|---|---|
 |  |  |
 |  |  |
.jpg?size=webview "run2_run16_cryofree_dic2015 (5).jpg") |  |  |
 |  | |