Kanson's claims dont stand up to scrutiny, I'm afraid.
Lets consider: Santhanam who is the guy questioning the TNW test results, was the man in charge of the seismic test apparatus. Its a multi-stakeholder approach and which actually supports the maturity of both BARC and DRDO which worked together. Its also good practise to have multiple agencies involved for transparency (though it adds to logistics).
http://nuclearweaponarchive.org/India/IndiaShakti.html
Project Leaders:
Dr. Avil (Abdul) Pakir Jainulabdeen Kalam
Scientific Adviser to the Defence Minister
Head of the Defence Research and Development Organization (DRDO)
Dr. Rajagopala Chidambaram
Chairman of India's Atomic Energy Commission (AEC)
Chairman of the Department of Atomic energy (DAE)
Development and Test Teams
Bhabha Atomic Research Center (BARC) Leads
Anil Kakodkar, Director of BARC
Satinder Kumar Sikka, Lead for Thermonuclear Weapon Development
M.S. Ramakumar, Director of Nuclear Fuel and Automation Manufacturing Group;
Lead for nuclear component manufacture
D.D. Sood, Director of Radiochemistry and Isotope Group;
Lead for nuclear material acquisition
S.K. Gupta, Solid State Physics and Spectroscopy Group;
Device design and assessment
G. Govindraj, Associate Director of Electronic and Instrumentation Group;
Lead for field instrumentation
DRDO Leads
K. Santhanam; lead for test site preparations
K. Santhanam of the DRDO, who was in charge of the test site preparations, gave the two keys that activated the test countdown to Vasudev, the range safety officer, who was responsible for verifying that all test indicators were normal. After checking the indicators, Vasudev handed one key each to a representative of BARC and of the DRDO, who together unlocked the countdown system. At 3:45 p.m. the three devices detonated.
So is it even credible to think that Santhanam could have done his job without even being aware of what he had to measure (which the BARC people would have told him beforehand what to measure)?
He explains further:
http://news.rediff.com/report/2009/sep/ ... tests1.htm
During the press conference the most repeated question was why did he not speak before about the sensational failure of India's thermo- nuclear testing? Why now? Santhanam said, "Please note that the tests were conducted in May 1998.The DRDO was in charge of all the field instrumentations to measure acceleration and to record measurements from a variety of instruments and recorders. After the tests were over, we visited in (Pokhran, Rajesthan) the shafts where the thermo- nuclear device was detonated. We found that shafts by and large remained undamaged. So, we moved on to other shafts where the fission bomb was detonated. The fission bomb was estimated to be 20-25 kilotons. It left behind the large crater which was larger than the crater formed in 1974, when India's first peaceful nuclear test was conducted. I had some reservations about whether the thermo-nuclear device actually worked as per our expectations. I had serious doubts about that. We had to check and double check before we could arrive at the actual yields from the test. It was put in the classified report at the end of 1998."
Sathanam added, "Thereafter DRDO and Bhabha Atomic Research Center's scientists held a meeting. Despite fairly long discussion the two agencies agreed to disagree. Under these circumstances, the chairman of the meeting said he would discuss the matter with the minister and then decide on the future course of action. The Data was classified and the fact is that we should not have to have it in the public domain until the government chooses to declassify it."
Second, is the belief that somehow the DRDO guys will only receive the "physics" package - and would not be aware of the bomb itself. They would have been involved in many design level details and possibly even manufacturing. The DRDO maintains some of the best precision manufacturing capabilities in the country, enabling them to even LSP Agni missiles. They can also do a job with secrecy. In the previous test in 1974:
http://nuclearweaponarchive.org/India/I ... tBomb.html
In July nuclear physicist Dr. Basanti Dulal Nag Chaudhuri took over as science adviser to the Defense Minister, and as Director of the Defense Research and Development Organization (DRDO). The following month, he and Ramanna began working together to recruit the Terminal Ballistics Research Laboratory (TBRL), located in Chandigarh, to develop the explosive lenses for the implosion system.
During 1971 work on weapon design continued. Srinivasan working with K. Subba Rao developed models of the fission process on a nuclear bomb, and equations to predict its efficiency. Chidamabaram completed his work on the plutonium equation of state, and Ramamurthy developed computational models of the implosion, nuclear reaction, and disassembly process to predict the devices behavior. Throughout this period Ramanna and his lieutenant, P.K. Iyengar, held frequest reviews of the projects progress.
In April 1971 Nag Chaudhuri appointed Nagapattinam Sambasiva Venkatesan to Director of TBRL with specific instructions to assist in developing the nuclear device.
As to the significance of these lenses:
http://nuclearweaponarchive.org/India/IndiaSmiling.html
The implosion system was designed to compress the core to twice its normal density. The lenses that were developed used the fast-slow explosive design pioneered by the U.S. in World War II. Like the Gadget exploded at Trinity in 1945, they used an RDX-TNT mixture as the fast explosive, with baratol (barium nitrate and TNT) used as the slow explosive. Chengappa descibes the inner slow explosive component as being in the shape of "Shiva ling am" -- a phallus in Hindu religious art which is squat and blunt in form. The device used 12 lens, which is described by Chengappa [pg. 182]: "the way the explosives were placed around the plutonium sphere resembled the petals of the lotus". This presumably indicates that each hemisphere of the implosion system consisted of 6 longitudinal lens segments (asymmetric diamond shaped lenses) joined together at the pole so that they formed triangular teeth at the equator which interlocked with the opposite hemisphere. This design is simpler and less sophisticated than the 32-lens "soccer ball" system developed by the U.S. during World War II. From 1971 through 1973 Venkatesan at TBRL fired over 500 lenses during development.
The point is even today, the DRDO team may have been involved in several aspects of the explosives, manufacturing etc. And why not? You work with whosoever has experience in the field.
So, even considering the DRDO guys did not contribute to the design itself (very unlikely based on prior events), they would have definite need to know the specifics of the bomb design to learn about what it could tolerate in terms of forces, pressures, design fuzing for it, switches etc. Apart from knowing the physical specifics of the packages down to the last detail so as to accurately model it for their delivery - via Agnis etc. Every pound of weight, etc will count.
Note several members of the BARC team were
involved in both tests - even if the TNW failed, their legacy is secure. These men did their job in getting us to the point we have a working fission device!
Next - the claim that somehow DRDO is the only agency auditing missile development and we have to take their word for it. Err...no. The armed forces are routinely brought in to observe the missile tests after detailed briefings & this is clearly done as a measure of transparency and to generate user buy-in. Naval ships are used for telemetry, service officers deputed to work with the DRDO to prepare the user for induction and training of the missile. At every stage, there is nowadays a fair bit of transparency.
These are all hard lessons learnt in order to convince a customer of the validity of each system, when imports are often available and used to benchmark local systems. DRDO also brings in ISRO members to audit technical aspects of their programs. The A-3 failure IIRC had an ex ISRO chair auditing.
Even after induction, user trials are regularly held. These indicate whether there are any lacunae in training, any issues with production quality etc and are essential. For the missiles, we have had the news about some missile failures because subcomponents sourced from some private contractors were not of the required quality. So now DRDO has set up a quality assurance agency to audit the critical components.
Point is this is the level of effort required for regular manufacture, even when a one-off design is tested. This is the reason why a single TNW test, where the head of test preparations and his team has reservations about the yield of the test, and does not think his instruments malfunctioned (note: "we checked and double checked" in comments above), may not be enough.
Furthermore, there are audit reports, observations by the Parliamentary Standing Committee on Defence, and finally the ever present media leaks, most of them rubbish, but the point remains, that the DRDO has multiple stakeholders monitoring its work & is not the sole decision making authority re: whether its systems work or not.
Coming back to the TNW issue,
merlin makes the point that he considers a report to have said the TNW has not been weaponized. This is interesting, because, in another report (deliberately leaving out the rhetoric which will otherwise end up sparking emotions), there is the statement that:
http://www.business-standard.com/india/ ... er/379156/
It is no wonder that the failed TN device has not been weaponised, 11 years after P-2,
...
Point is if India has not weaponized TN - then it bears out the need to test.
Are there alternatives to testing?
Question is: Are there any methods/techniques available to test/refine our TNW capabilities before testing?