VPT Reports
VPT
homepage
VPT
test documents
General
EE and VPT upblications
2008-2010- LED and
stability talks
link
2009
The variation in response of the CMS ECAL
vacuum phototriodes as a function of
orientation
in a strong magnetic field, CMS Note 2009/xxx RM Brown,
1.8 draft
VPT angles in CMS, B Kennedy
20.2 comments
data
B-field data in CMS, M Mulders
16.2
email
email2 Bz
Br
tanB
minus-data
plus-data
2008
Burn-in xls data on RIE 57 and
RIE72, with double exponential fit, RM Brown 13.12
xls
Ageing of
Vacuum Phototriodes under intense illumination, Bell-Brown-Sproston 11.12
doc
Vacuum Photodetectors, past and present, report to FNAL SLHC
workshop, RM Brown 19.11
link
Thesis,
I Yaselli,
"Studying the Time Response of a Vacuum
Phototriode and Measurement of Gamma Radiation
Damage to High Voltage Capacitors and Resistors" 1.10
pdf
Comments on excess noise factor and rms width variation
versus angle, RM Brown 2.7
htm doc1
doc2
VPTs: description in "The
CMS experiment at the CERN LHC",
p98 section 4.3.2 14.8
pdf
Possible VPT photodetector R&D for SLHC, RM Brown 2.7
pdf
VPT response as a function of angle, RM Brown 19.6
pdf
Avalanche Photodiodes and Vacuum
Phototriodes for the Electromagnetic Calorimeter of the CMS experiment at the
Large Hadron Collider, Peter R Hobson,
15.9 Version4
EE at SLHC, RM Brown 15.4
ppt
VPT faceplates at SLHC, RM Brown 15.4
ppt
Anomalous behaviour of VPTs
Addendum: behaviour of two
VPTs at 4T, B W
Kennedy
(from
20 September 2002)
pdf
First angle for discharges on a symmetric scan, K Bell
28.2 pdf
htm
2007
Run 29810 at RAL, study of VPT noise, B Kennedy
23.11 doc
htm
VPT (in)stability impplications for H4, R Yohay, DPG
12.8
ppt
VPT temp studies in OPAL and report by OPAL VPT
manufacturer Brive, B Brown et al
txt
doc Brive
A measurement of the Temperature Stability of Vacuum
Phototriodes for the CMS ECAL, UVa, D Phillips et al
pdf
2006
Simulation of a vacuum phototriode with SIMION 3D,
P Hobson, I Yasellia,
1.11 pp. 226-229. Proc.
of the 4th International Conference on New Developments in Photodetection -
BEAUNE 2005, New Developments in Photodetection
link
Evaluating the gamma and neutron radiation tolerance of Vacuum
PhotoTriodes
for the Endcap Calorimeter of the Compact Muon Solenoid, P
Hobson, D Cussans et al.
3.11
doc
Estimates of currents drawn by VPTs per quadrant, D
Cockerill 13.10 xls
Views inside a cut VPT, D Cockerill 1.9
Off axis VPTs, D Cockerill 28.7
Offset = 2
Offset = 0
Offset = 0 Offset =
0 Offset = 2
Offset = 2
Installing VPTs into test rig at RAL, P Flower, M Sproston 13.7
doc
Faceplate results, D Seliverstov 13.6
txt
29992
30300
30342
30608
Poster on the "Simulation of the Time Response of a
VPT", I Yaselli 8.5 ppt
png
2005
Updated file of VPT measurements at CERN,
distribution plots of ILED , A Uzunian, 11.11
jul-oct.xls
jul-nov.xls
all2005
box1
box2
box3
box4
box5
box6
box7
box8
box9
box10
box11
box12
box13
box14
box15
box16
box17
box18
box19
Measurement of first 500 VPTs sent to CERN, boxes
1-10, V Postoev/S Grischin 18.7
xls
Bad VPTs
Draft document for Rev Sci Instr, 7.06
doc
CMS VPT News article
for the CERN courier, B Kennedy 9.5
doc
photo1
photo2
photo3
Spatial Efficiency of the CMS Vacuum Phototriodes, N
Godinovic et al., CMS IN 2005/009 March 05
pdf
doc
ps.gz
VPT status report, CMS week, B Brown 15.3 ppt
2004
Super Radiation Hard Vacuum Phototriodes for the CMS Endcap ECAL,
Proceedings of Vienna-2004 conference, Seliverstov, Gusev et al,
NIM A535, issues 1-2, 511-516
pdf doc
VPT QE spatial uniformity with red light, N Godinovic
23.12
doc
Vacuum
phototriodes for the CMS electromagnetic calorimeter endcap,
KW Bell et al.,
IEEE Trans.Nucl.Sci.51:2284-2287,
Vol 51, No 5, Oct 2004
pdf
ppt
LED light injection system for CMS ECAL Endcap, J
Williams 16.9
txt
pdf
The Performance of Prototype Vacuum Phototriodes in the First Full Sized Supercrystal
Array
for the CMS ECAL Endcaps, M Apollonio et al., NIM 532 (2004)
566-574 pdf
2003
Spatial efficiency of the CMS Vacuum Phototriodes, N Godinovic et al,
3.10 doc
Vacuum Phototriodes for the CMS Electromagnetic Calorimeter Endcaps, B Kennedy,
IEEE 3.10 ppt
Radiation hardness, excess noise factor and short-term
gain instability of vacuum phototriodes
for the operation in pseudorapidity range 1.5<η<3.0
at CMS ECAL, Y Blinnikov et al.,
NIM A504, May 2003, 228-231
pdf
2002
VPT performance, DPG meeting, CMS week, R M Brown
4.12 ppt
Anomalous behaviour of VPTs, B Kennedy 20.9
pdf
txt
Summary, 100 RIE pre-production VPTs,
F values, MELZ prototypes, D Imrie
25.7 rtf
The response to high magnetic fields of the Vacuum Phototriodes for the Compact Muon
Solenoid endcap electromagnetic calorimeter, Beaune Conf., June 2002, P Hobson et al,
NIM A504:255-257,2003
pdf ppt
Calibration of the RAL VPT test rig, draft in preparation, D Cockerill 23.5
pdf
Faceplate irradiation data for RIE production VPT devices, P Hobson
19.4 doc
Behaviour of production VPTs for the CMS Endcap Electromagnetic
Calorimeter, B Kennedy
19.4 pdf doc
Development of an automated quality control system for 16,000 Vacuum Phototriodes,
destined for the CMS Electromagnetic Calorimeter, Institute of Physics (IOP) UK,
J Williams 9.4 ppt
rtf
Mesh 1500 lines per inch
photo from Electron Tubes VPT
txt
tif
2001
ECAL Annual Review, SC Test bench Photo
19.9 ppt
VPT report for the ECAL Annual Review, RM Brown 19.9
ppt
The Development of Vacuum Phototriodes for the CMS Electromagnetic Calorimeter,
K Bell et al., NIM A469 (2001) 29-46
The Vacuum Phototriodes for the CMS Electromagnetic Calorimeter, EPS Conf, Budapest,
Bob Brown, July 2001 pdf ppt, written proceedings pdf
VPT scan results from Split University, July
vpt 137
jpg
vpt
354 jpg
F Measurements at 0T
on RIE Preproduction VPTs, D Imrie 20.6 rtf
Quantifying the RAL VPT test rig – some initial observations,
D Cockerill 18.5
doc
RIE irradiated tube data, P Hobson 2.5 xls txt
Behaviour of pre-production VPTs for the CMS endcap electromagnetic calorimeter,
B Kennedy 20.4 pdf
RIE pre-production VPT Brunel tests, P Hobson 6.2
ppt
2000
The Performance of Prototype Vacuum Phototriodes in the First Full Sized Supercrystal
Array
for the ECAL Endcaps, B Camanzi et al,
CMS NOTE
2000/054
Gamma radiation tolerance of vacuum
phototriodes for Particle Physics applications,
Camanzi B, Hobson PR, Imrie DC, Ionescu S, Les journees Techniques du RADECS 2000,
11-13.9 Resume, pp 87-90, Title ppt,
text ppt, figure jpeg
A Stabilised Blue-Violet LED for VPT Photocathode Evaluation, P Hobson et
al, CMS
NOTE-2000/023
Tests on 1999 Vacuum Phototriodes for the CMS Ecal Endcaps, B Camanzi et al,
CMS NOTE-2000/010
VPT's with 'Anomalous' Gain, Brekhovxkikh et al,
CMS IN-2000/008
The Development of Vacuum Phototriodes for the CMS Electromagnetic Calorimeter,
RMBrown et al., doc
Comparison of Photonis P066 and Hamamatsu XA1163 VPTs, D
Imrie rtf
Measurements on Hyperbright Blue LEDs, D Imrie rtf
Temperature Dependence of Hyperbright Blue LEDs, D Imrie rtf
Long-Term Behaviour of Three Prototype Vacuum VPTs operated with High
Photocurrents, D Imrie rtf
orig-figures
scanned-complete-pdf
scanned-plots-pdf
Fine-mesh photodetectors for CMS endcap electromagnetic
calorimeter, Bajanov et al.,
NIM A442, 146-149, March 2000
pdf
Lifetime test, Hamamatsu VPT with Getter, Pk=200nA, for 17 days, RM Brown 7.3
doc
Write up of Labview programme for the RAL VPT test rig, C Pattison
16.2 doc
The selection of an
adhesive for bonding the VPTs to the PbWO4 crystals
in the end cap electromagnetic calorimeters,
PS Flower
1.2 ppt
1999
Data/discussion of Helium ingress, RM BRown, P
Flower 9.11
doc
Photonis ageing tests, tube SN41, author?? 9.11??
pdf
Burn-in plot of RIE50, RM Brown 28.10
xls
Gain measurements on VPTs, D Imrie
doc(1 MB)
pdf(5 MB)
An estimate of the standing photocurrents in CMS Endcap VPTs, D Imrie
9.8 rtf
Getting the stochastic term expected with VPTs,
D Cockerill 6.8 pdf
'Ageing of
Vacuum Phototriodes under intense illumination',
(demonstrating that ageing at Zero field *adds* to ageing at 1.8T),
K Bell et
al 1.8 doc
Photocathode resistance, D Imrie 19.7
rtf
Performance of some Prototype VPTs in Axial and Quasi-Axial Magnetic Fields up to 4.7T,
D Imrie 20.4
ps,
xls
1998
The Operation of Vacuum Phototriodes in a Non-Axial Magnetic Field, a Monte-Carlo
Study, E Bateman 21.12
CMS NOTE-1999/032
Behaviour of VPTs at Low Bias Voltages, D Imrie 16.12
pdf
Fine Mesh Photodetectors for CMS Endcap Electromagnetic Calorimeter, Bajanov et al,
9.12
CMS
NOTE-1998/080
The Operation of Vacuum Phototriodes in an Axial Magnetic Field - a Monte Carlo Study,
E Bateman 11.8 CMS
NOTE-1998/059
VPT Faceplates of UV-Transmitting Glass, D Imrie 3.10
doc
VPT Parameters and their Impact on EE Performance, D Imrie
12.10 rtf
ps
First draft, VPT Parameters and their Impact on EE Performance, D Imrie
21.9 rtf
Measurement of F (as at Brunel in 1997/8), D Cockerill
28.5 doc
Schott Radiation-Hard Glasses for VPT Faceplates, D Imrie
23.2 rtf
1997
Performance tests of Russian mesh dynode photomultiplier
tubes,
NIM
A400, 149-155 S.
Ahmad et al., 21.11
pdf
Performance and testing of Russian mesh photomultiplier
tubes for high magnetic field environments,
S. Ahmad et al.,
NIM A387,
43-44, 1.3
pdf
